X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftv%2Ftv.c;h=ff38cc5ae980860cacbc28c976c788324e3c8c91;hb=f7438c4999f7a4565b7753df2dfde4de3cb74bfa;hp=964af5619c94d1d7c73a15e4ceee0d193e311f5c;hpb=292eaf646e5ae35f2cedb91ea854c163db80eefa;p=libfirm diff --git a/ir/tv/tv.c b/ir/tv/tv.c index 964af5619..ff38cc5ae 100644 --- a/ir/tv/tv.c +++ b/ir/tv/tv.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved. + * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * @@ -24,56 +24,49 @@ * @date 2003 * @author Mathias Heil * @version $Id$ - * @summary + * @brief * * Values are stored in a format depending upon chosen arithmetic * module. Default uses strcalc and fltcalc. * This implementation assumes: * - target has IEEE-754 floating-point arithmetic. */ -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif +#include "config.h" -#include /* assertions */ -#include /* atoi() */ -#ifdef HAVE_STRING_H -# include /* nice things for strings */ -#endif -#ifdef HAVE_STRINGS_H -#include /* strings.h also includes bsd only function strcasecmp */ -#endif -#ifdef HAVE_STDLIB_H -# include -#endif +#include +#include +#include +#include +#include +#include "bitfiddle.h" #include "tv_t.h" -#include "set.h" /* to store tarvals in */ -#include "entity_t.h" /* needed to store pointers to entities */ +#include "set.h" +#include "entity_t.h" #include "irmode_t.h" -#include "irnode.h" /* defines boolean return values (pnc_number)*/ +#include "irnode.h" #include "strcalc.h" #include "fltcalc.h" -#include "irtools.h" +#include "util.h" #include "xmalloc.h" #include "firm_common.h" +#include "error.h" /** Size of hash tables. Should correspond to average number of distinct constant target values */ #define N_CONSTANTS 2048 -/* get the integer overflow mode */ -#define GET_OVERFLOW_MODE() int_overflow_mode - /* unused, float to int doesn't work yet */ -enum float_to_int_mode { +typedef enum float_to_int_mode { TRUNCATE, ROUND -}; +} float_to_int_mode; -#define GET_FLOAT_TO_INT_MODE() TRUNCATE +static float_to_int_mode current_float_to_int_mode = TRUNCATE; +/* set this to true if infinity should be clipped to +/- MAX_FLOAT */ #define SWITCH_NOINFINITY 0 +/* set this to true if denormals should be clipped to zero */ #define SWITCH_NODENORMALS 0 /**************************************************************************** @@ -85,43 +78,48 @@ enum float_to_int_mode { # define TARVAL_VERIFY(a) ((void)0) #endif -#define INSERT_TARVAL(tv) ((tarval*)set_insert(tarvals, (tv), sizeof(tarval), hash_tv((tv)))) -#define FIND_TARVAL(tv) ((tarval*)set_find(tarvals, (tv), sizeof(tarval), hash_tv((tv)))) +#define INSERT_TARVAL(tv) ((ir_tarval*)set_insert(tarvals, (tv), sizeof(ir_tarval), hash_tv((tv)))) +#define FIND_TARVAL(tv) ((ir_tarval*)set_find(tarvals, (tv), sizeof(ir_tarval), hash_tv((tv)))) #define INSERT_VALUE(val, size) (set_insert(values, (val), size, hash_val((val), size))) #define FIND_VALUE(val, size) (set_find(values, (val), size, hash_val((val), size))) #define fail_verify(a) _fail_verify((a), __FILE__, __LINE__) -/**************************************************************************** - * private variables - ****************************************************************************/ -static struct set *tarvals = NULL; /* container for tarval structs */ -static struct set *values = NULL; /* container for values */ +/** A set containing all existing tarvals. */ +static struct set *tarvals = NULL; +/** A set containing all existing values. */ +static struct set *values = NULL; + +/** The carry flag for SOME operations. -1 means UNDEFINED here */ +static int carry_flag = -1; + +/** The integer overflow mode. */ static tarval_int_overflow_mode_t int_overflow_mode = TV_OVERFLOW_WRAP; -#define no_float 0 +/** if this is set non-zero, the constant folding for floating point is OFF */ +static int no_float = 0; /**************************************************************************** * private functions ****************************************************************************/ #ifndef NDEBUG -static int hash_val(const void *value, unsigned int length); -static int hash_tv(tarval *tv); -static void _fail_verify(tarval *tv, const char* file, int line) +static unsigned hash_val(const void *value, size_t length); +static unsigned hash_tv(ir_tarval *tv); +static void _fail_verify(ir_tarval *tv, const char* file, int line) { /* print a memory image of the tarval and throw an assertion */ if (tv) - printf("%s:%d: Invalid tarval:\n mode: %s\n value: [%p]\n", file, line, get_mode_name(tv->mode), tv->value); + panic("%s:%d: Invalid tarval: mode: %F\n value: [%p]", file, line, tv->mode, tv->value); else - printf("%s:%d: Invalid tarval (null)", file, line); - assert(0); + panic("%s:%d: Invalid tarval (null)", file, line); } + +inline static #ifdef __GNUC__ -INLINE static void tarval_verify(tarval *tv) __attribute__ ((unused)); + __attribute__((unused)) #endif - -INLINE static void tarval_verify(tarval *tv) +void tarval_verify(ir_tarval *tv) { assert(tv); assert(tv->mode); @@ -132,20 +130,20 @@ INLINE static void tarval_verify(tarval *tv) if (!FIND_TARVAL(tv)) fail_verify(tv); if (tv->length > 0 && !FIND_VALUE(tv->value, tv->length)) fail_verify(tv); - - return; } #endif /* NDEBUG */ /** Hash a tarval. */ -static int hash_tv(tarval *tv) { - return (PTR_TO_INT(tv->value) ^ PTR_TO_INT(tv->mode)) + tv->length; +static unsigned hash_tv(ir_tarval *tv) +{ + return (unsigned)((PTR_TO_INT(tv->value) ^ PTR_TO_INT(tv->mode)) + tv->length); } /** Hash a value. Treat it as a byte array. */ -static int hash_val(const void *value, unsigned int length) { - unsigned int i; - unsigned int hash = 0; +static unsigned hash_val(const void *value, size_t length) +{ + size_t i; + unsigned hash = 0; /* scramble the byte - array */ for (i = 0; i < length; ++i) { @@ -156,9 +154,34 @@ static int hash_val(const void *value, unsigned int length) { return hash; } +static int cmp_tv(const void *p1, const void *p2, size_t n) +{ + const ir_tarval *tv1 = (const ir_tarval*) p1; + const ir_tarval *tv2 = (const ir_tarval*) p2; + (void) n; + + assert(tv1->kind == k_tarval); + assert(tv2->kind == k_tarval); + if (tv1->mode < tv2->mode) + return -1; + if (tv1->mode > tv2->mode) + return 1; + if (tv1->length < tv2->length) + return -1; + if (tv1->length > tv2->length) + return 1; + if (tv1->value < tv2->value) + return -1; + if (tv1->value > tv2->value) + return 1; + + return 0; +} + /** finds tarval with value/mode or creates new tarval */ -static tarval *get_tarval(const void *value, int length, ir_mode *mode) { - tarval tv; +static ir_tarval *get_tarval(const void *value, size_t length, ir_mode *mode) +{ + ir_tarval tv; tv.kind = k_tarval; tv.mode = mode; @@ -166,35 +189,49 @@ static tarval *get_tarval(const void *value, int length, ir_mode *mode) { if (length > 0) { /* if there already is such a value, it is returned, else value * is copied into the set */ - tv.value = INSERT_VALUE(value, length); + char *temp = (char*) alloca(length); + memcpy(temp, value, length); + if (get_mode_arithmetic(mode) == irma_twos_complement) { + sign_extend(temp, mode); + } + tv.value = INSERT_VALUE(temp, length); } else { tv.value = value; } /* if there is such a tarval, it is returned, else tv is copied * into the set */ - return (tarval *)INSERT_TARVAL(&tv); + return (ir_tarval *)INSERT_TARVAL(&tv); } /** * handle overflow */ -static tarval *get_tarval_overflow(const void *value, int length, ir_mode *mode) +static ir_tarval *get_tarval_overflow(const void *value, size_t length, ir_mode *mode) { + char *temp; + switch (get_mode_sort(mode)) { + case irms_reference: + /* addresses always wrap around */ + temp = (char*) alloca(sc_get_buffer_length()); + memcpy(temp, value, sc_get_buffer_length()); + sc_truncate(get_mode_size_bits(mode), temp); + /* the sc_ module expects that all bits are set ... */ + sign_extend(temp, mode); + return get_tarval(temp, length, mode); + case irms_int_number: if (sc_comp(value, get_mode_max(mode)->value) == 1) { - switch (GET_OVERFLOW_MODE()) { + switch (tarval_get_integer_overflow_mode()) { case TV_OVERFLOW_SATURATE: return get_mode_max(mode); case TV_OVERFLOW_WRAP: - { - char *temp = alloca(sc_get_buffer_length()); - sc_val_from_ulong(-1, temp); - sc_and(temp, value, temp); - /* the sc_ module expects that all bits are set ... */ - sign_extend(temp, mode); - return get_tarval(temp, length, mode); - } + temp = (char*) alloca(sc_get_buffer_length()); + memcpy(temp, value, sc_get_buffer_length()); + sc_truncate(get_mode_size_bits(mode), temp); + /* the sc_ module expects that all bits are set ... */ + sign_extend(temp, mode); + return get_tarval(temp, length, mode); case TV_OVERFLOW_BAD: return tarval_bad; default: @@ -202,13 +239,13 @@ static tarval *get_tarval_overflow(const void *value, int length, ir_mode *mode) } } if (sc_comp(value, get_mode_min(mode)->value) == -1) { - switch (GET_OVERFLOW_MODE()) { + switch (tarval_get_integer_overflow_mode()) { case TV_OVERFLOW_SATURATE: return get_mode_min(mode); case TV_OVERFLOW_WRAP: { - char *temp = alloca(sc_get_buffer_length()); - sc_val_from_ulong(-1, temp); - sc_and(temp, value, temp); + temp = (char*) alloca(sc_get_buffer_length()); + memcpy(temp, value, sc_get_buffer_length()); + sc_truncate(get_mode_size_bits(mode), temp); return get_tarval(temp, length, mode); } case TV_OVERFLOW_BAD: @@ -220,13 +257,18 @@ static tarval *get_tarval_overflow(const void *value, int length, ir_mode *mode) break; case irms_float_number: - if (SWITCH_NOINFINITY && fc_is_inf(value)) { - return fc_is_negative(value)?get_mode_min(mode):get_mode_max(mode); +#if SWITCH_NOINFINITY + if (fc_is_inf((const fp_value*) value)) { + /* clip infinity to maximum value */ + return fc_is_negative((const fp_value*) value) ? get_mode_min(mode) : get_mode_max(mode); } - - if (SWITCH_NODENORMALS && fc_is_subnormal(value)) { +#endif +#if SWITCH_NODENORMALS + if (fc_is_subnormal((const fp_value*) value)) { + /* clip denormals to zero */ return get_mode_null(mode); } +#endif break; default: @@ -238,74 +280,135 @@ static tarval *get_tarval_overflow(const void *value, int length, ir_mode *mode) /* * public variables declared in tv.h */ -static tarval reserved_tv[4]; +static ir_tarval reserved_tv[6]; -tarval *tarval_bad = &reserved_tv[0]; -tarval *tarval_undefined = &reserved_tv[1]; -tarval *tarval_b_false = &reserved_tv[2]; -tarval *tarval_b_true = &reserved_tv[3]; +ir_tarval *tarval_b_false = &reserved_tv[0]; +ir_tarval *tarval_b_true = &reserved_tv[1]; +ir_tarval *tarval_bad = &reserved_tv[2]; +ir_tarval *tarval_undefined = &reserved_tv[3]; +ir_tarval *tarval_reachable = &reserved_tv[4]; +ir_tarval *tarval_unreachable = &reserved_tv[5]; -/* - * public functions declared in tv.h +/** + * get the float descriptor for given mode. */ +static const float_descriptor_t *get_descriptor(const ir_mode *mode) +{ + return &mode->float_desc; +} + +ir_tarval *new_integer_tarval_from_str(const char *str, size_t len, char sign, + unsigned char base, ir_mode *mode) +{ + void *buffer; + int ok; + + buffer = alloca(sc_get_buffer_length()); + + ok = sc_val_from_str(sign, base, str, len, buffer); + if (!ok) + return tarval_bad; + + return get_tarval_overflow(buffer, sc_get_buffer_length(), mode); +} + +static ir_tarval *new_tarval_from_str_int(const char *str, size_t len, + ir_mode *mode) +{ + void *buffer; + unsigned base = 10; + char sign = 1; + int ok; + + /* skip leading spaces */ + while (len > 0 && str[0] == ' ') { + ++str; + --len; + } + if (len == 0) + return tarval_bad; + + /* 1 sign character allowed */ + if (str[0] == '-') { + sign = -1; + ++str; + --len; + } else if (str[0] == '+') { + ++str; + --len; + } + + /* a number starting with '0x' is hexadeciaml, + * a number starting with '0' (and at least 1 more char) is octal */ + if (len >= 2 && str[0] == '0') { + if (str[1] == 'x' || str[1] == 'X') { + str += 2; + len -= 2; + base = 16; + } else { + ++str; + --len; + base = 8; + } + } + if (len == 0) + return tarval_bad; + + buffer = alloca(sc_get_buffer_length()); + + ok = sc_val_from_str(sign, base, str, len, buffer); + if (!ok) + return tarval_bad; + + return get_tarval_overflow(buffer, sc_get_buffer_length(), mode); +} /* * Constructors ============================================================= */ -tarval *new_tarval_from_str(const char *str, size_t len, ir_mode *mode) +ir_tarval *new_tarval_from_str(const char *str, size_t len, ir_mode *mode) { + const float_descriptor_t *desc; + assert(str); assert(len); assert(mode); switch (get_mode_sort(mode)) { - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - assert(0); - break; - case irms_internal_boolean: /* match [tT][rR][uU][eE]|[fF][aA][lL][sS][eE] */ - if (strcasecmp(str, "true")) return tarval_b_true; - else if (strcasecmp(str, "false")) return tarval_b_true; + if (!strcasecmp(str, "true")) + return tarval_b_true; + else if (!strcasecmp(str, "false")) + return tarval_b_false; else /* XXX This is C semantics */ return atoi(str) ? tarval_b_true : tarval_b_false; case irms_float_number: - switch(get_mode_size_bits(mode)) { - case 32: - fc_val_from_str(str, len, 8, 23, NULL); - break; - case 64: - fc_val_from_str(str, len, 11, 52, NULL); - break; - case 80: - fc_val_from_str(str, len, 15, 64, NULL); - break; - } + desc = get_descriptor(mode); + fc_val_from_str(str, len, desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); - case irms_reference: - /* same as integer modes */ - case irms_int_number: - case irms_character: - sc_val_from_str(str, len, NULL, mode); - return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode); + case irms_reference: + if (!strcasecmp(str, "null")) + return get_tarval_null(mode); + /* FALLTHROUGH */ + case irms_int_number: + return new_tarval_from_str_int(str, len, mode); + default: + panic("Unsupported tarval creation with mode %F", mode); } - - assert(0); /* can't be reached, can it? */ - return NULL; } /* * helper function, create a tarval from long */ -tarval *new_tarval_from_long(long l, ir_mode *mode) { +ir_tarval *new_tarval_from_long(long l, ir_mode *mode) +{ assert(mode); - switch(get_mode_sort(mode)) { + switch (get_mode_sort(mode)) { case irms_internal_boolean: /* XXX C semantics ! */ return l ? tarval_b_true : tarval_b_false ; @@ -313,7 +416,6 @@ tarval *new_tarval_from_long(long l, ir_mode *mode) { case irms_reference: /* same as integer modes */ case irms_int_number: - case irms_character: sc_val_from_long(l, NULL); return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode); @@ -321,16 +423,15 @@ tarval *new_tarval_from_long(long l, ir_mode *mode) { return new_tarval_from_double((long double)l, mode); default: - assert(0 && "unsupported mode sort"); + panic("unsupported mode sort"); } - return NULL; } /* returns non-zero if can be converted to long */ -int tarval_is_long(tarval *tv) { - mode_sort sort = get_mode_sort(tv->mode); - - if (sort != irms_int_number && sort != irms_character) return 0; +int tarval_is_long(ir_tarval *tv) +{ + if (!mode_is_int(tv->mode) && !mode_is_reference(tv->mode)) + return 0; if (get_mode_size_bits(tv->mode) > (int) (sizeof(long) << 3)) { /* the value might be too big to fit in a long */ @@ -344,40 +445,46 @@ int tarval_is_long(tarval *tv) { } /* this might overflow the machine's long, so use only with small values */ -long get_tarval_long(tarval* tv) { +long get_tarval_long(ir_tarval* tv) +{ assert(tarval_is_long(tv) && "tarval too big to fit in long"); return sc_val_to_long(tv->value); } -tarval *new_tarval_from_double(long double d, ir_mode *mode) { - assert(mode && (get_mode_sort(mode) == irms_float_number)); +ir_tarval *new_tarval_from_long_double(long double d, ir_mode *mode) +{ + const float_descriptor_t *desc; - switch (get_mode_size_bits(mode)) { - case 32: - fc_val_from_float(d, 8, 23, NULL); - break; - case 64: - fc_val_from_float(d, 11, 52, NULL); - break; - case 80: - fc_val_from_float(d, 15, 64, NULL); - break; - } + assert(mode && (get_mode_sort(mode) == irms_float_number)); + desc = get_descriptor(mode); + fc_val_from_ieee754(d, desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); } +ir_tarval *new_tarval_from_double(double d, ir_mode *mode) +{ + return new_tarval_from_long_double(d, mode); +} + /* returns non-zero if can be converted to double */ -int tarval_is_double(tarval *tv) { +int tarval_is_double(ir_tarval *tv) +{ assert(tv); return (get_mode_sort(tv->mode) == irms_float_number); } -long double get_tarval_double(tarval *tv) { +long double get_tarval_long_double(ir_tarval *tv) +{ assert(tarval_is_double(tv)); - return fc_val_to_float(tv->value); + return fc_val_to_ieee754((const fp_value*) tv->value); +} + +double get_tarval_double(ir_tarval *tv) +{ + return get_tarval_long_double(tv); } @@ -386,7 +493,8 @@ long double get_tarval_double(tarval *tv) { */ /* get the mode of the tarval */ -ir_mode *(get_tarval_mode)(const tarval *tv) { +ir_mode *(get_tarval_mode)(const ir_tarval *tv) +{ return _get_tarval_mode(tv); } @@ -397,291 +505,203 @@ ir_mode *(get_tarval_mode)(const tarval *tv) { * value. * The functions get_mode_{Max,Min,...} return tarvals retrieved from these * functions, but these are stored on initialization of the irmode module and - * therefore the irmode functions should be prefered to the functions below. + * therefore the irmode functions should be preferred to the functions below. */ -tarval *(get_tarval_bad)(void) { +ir_tarval *(get_tarval_bad)(void) +{ return _get_tarval_bad(); } -tarval *(get_tarval_undefined)(void) { +ir_tarval *(get_tarval_undefined)(void) +{ return _get_tarval_undefined(); } -tarval *(get_tarval_b_false)(void) { +ir_tarval *(get_tarval_b_false)(void) +{ return _get_tarval_b_false(); } -tarval *(get_tarval_b_true)(void) { +ir_tarval *(get_tarval_b_true)(void) +{ return _get_tarval_b_true(); } -tarval *get_tarval_max(ir_mode *mode) { - assert(mode); +ir_tarval *(get_tarval_reachable)(void) +{ + return _get_tarval_reachable(); +} - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } +ir_tarval *(get_tarval_unreachable)(void) +{ + return _get_tarval_unreachable(); +} - switch(get_mode_sort(mode)) { - case irms_reference: - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - assert(0); - break; +ir_tarval *get_tarval_max(ir_mode *mode) +{ + const float_descriptor_t *desc; + switch (get_mode_sort(mode)) { case irms_internal_boolean: return tarval_b_true; case irms_float_number: - switch(get_mode_size_bits(mode)) { - case 32: - fc_get_max(8, 23, NULL); - break; - case 64: - fc_get_max(11, 52, NULL); - break; - case 80: - fc_get_max(15, 64, NULL); - break; - } + desc = get_descriptor(mode); + fc_get_max(desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); - case irms_int_number: - case irms_character: - sc_max_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL); - return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode); + case irms_reference: + case irms_int_number: + sc_max_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL); + return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode); + default: + panic("mode %F does not support maximum value", mode); } - return tarval_bad; } -tarval *get_tarval_min(ir_mode *mode) { - assert(mode); - - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } - - switch(get_mode_sort(mode)) { - case irms_reference: - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - assert(0); - break; +ir_tarval *get_tarval_min(ir_mode *mode) +{ + const float_descriptor_t *desc; + switch (get_mode_sort(mode)) { case irms_internal_boolean: return tarval_b_false; case irms_float_number: - switch(get_mode_size_bits(mode)) { - case 32: - fc_get_min(8, 23, NULL); - break; - case 64: - fc_get_min(11, 52, NULL); - break; - case 80: - fc_get_min(15, 64, NULL); - break; - } + desc = get_descriptor(mode); + fc_get_min(desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); - case irms_int_number: - case irms_character: - sc_min_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL); - return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode); + case irms_reference: + case irms_int_number: + sc_min_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL); + return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode); + default: + panic("mode %F does not support minimum value", mode); } - return tarval_bad; } /** The bit pattern for the pointer NULL */ -static long _null_value; - -tarval *get_tarval_null(ir_mode *mode) { - assert(mode); - - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } - - switch(get_mode_sort(mode)) { - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - case irms_internal_boolean: - assert(0); - break; +static long _null_value = 0; +ir_tarval *get_tarval_null(ir_mode *mode) +{ + switch (get_mode_sort(mode)) { case irms_float_number: return new_tarval_from_double(0.0, mode); + case irms_internal_boolean: case irms_int_number: - case irms_character: return new_tarval_from_long(0l, mode); case irms_reference: return new_tarval_from_long(_null_value, mode); + default: + panic("mode %F does not support null value", mode); } - return tarval_bad; } -tarval *get_tarval_one(ir_mode *mode) { - assert(mode); +ir_tarval *get_tarval_one(ir_mode *mode) +{ + switch (get_mode_sort(mode)) { + case irms_internal_boolean: + return tarval_b_true; - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; + case irms_float_number: + return new_tarval_from_double(1.0, mode); + + case irms_reference: + case irms_int_number: + return new_tarval_from_long(1l, mode); + default: + panic("mode %F does not support one value", mode); } +} - switch(get_mode_sort(mode)) { - case irms_control_flow: - case irms_memory: - case irms_auxiliary: +ir_tarval *get_tarval_all_one(ir_mode *mode) +{ + switch (get_mode_sort(mode)) { + case irms_int_number: case irms_internal_boolean: case irms_reference: - assert(0); - break; + return tarval_not(get_mode_null(mode)); case irms_float_number: return new_tarval_from_double(1.0, mode); - case irms_int_number: - case irms_character: - return new_tarval_from_long(1l, mode); - break; + default: + panic("mode %F does not support all-one value", mode); } - return tarval_bad; } -tarval *get_tarval_minus_one(ir_mode *mode) { - assert(mode); +int tarval_is_constant(ir_tarval *tv) +{ + int num_res = sizeof(reserved_tv) / sizeof(reserved_tv[0]); - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + /* reserved tarvals are NOT constants. Note that although + tarval_b_true and tarval_b_false are reserved, they are constants of course. */ + return (tv < &reserved_tv[2] || tv > &reserved_tv[num_res - 1]); +} - switch(get_mode_sort(mode)) { - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - case irms_internal_boolean: +ir_tarval *get_tarval_minus_one(ir_mode *mode) +{ + switch (get_mode_sort(mode)) { case irms_reference: - assert(0); - break; + return tarval_bad; case irms_float_number: return mode_is_signed(mode) ? new_tarval_from_double(-1.0, mode) : tarval_bad; case irms_int_number: - case irms_character: - return mode_is_signed(mode) ? new_tarval_from_long(-1l, mode) : tarval_bad; + return new_tarval_from_long(-1l, mode); + + default: + panic("mode %F does not support minus one value", mode); } - return tarval_bad; } -tarval *get_tarval_nan(ir_mode *mode) { - assert(mode); - - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } +ir_tarval *get_tarval_nan(ir_mode *mode) +{ + const float_descriptor_t *desc; if (get_mode_sort(mode) == irms_float_number) { - switch(get_mode_size_bits(mode)) { - case 32: - fc_get_qnan(8, 23, NULL); - break; - case 64: - fc_get_qnan(11, 52, NULL); - break; - case 80: - fc_get_qnan(15, 64, NULL); - break; - } + desc = get_descriptor(mode); + fc_get_qnan(desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); - } else { - assert(0 && "tarval is not floating point"); - return tarval_bad; - } + } else + panic("mode %F does not support NaN value", mode); } -tarval *get_tarval_plus_inf(ir_mode *mode) { - assert(mode); - - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } - +ir_tarval *get_tarval_plus_inf(ir_mode *mode) +{ if (get_mode_sort(mode) == irms_float_number) { - switch(get_mode_size_bits(mode)) { - case 32: - fc_get_plusinf(8, 23, NULL); - break; - case 64: - fc_get_plusinf(11, 52, NULL); - break; - case 80: - fc_get_plusinf(15, 64, NULL); - break; - } + const float_descriptor_t *desc = get_descriptor(mode); + fc_get_plusinf(desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); - } else { - assert(0 && "tarval is not floating point"); - return tarval_bad; - } + } else + panic("mode %F does not support +inf value", mode); } -tarval *get_tarval_minus_inf(ir_mode *mode) { - assert(mode); - - if (get_mode_n_vector_elems(mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } - +ir_tarval *get_tarval_minus_inf(ir_mode *mode) +{ if (get_mode_sort(mode) == irms_float_number) { - switch(get_mode_size_bits(mode)) { - case 32: - fc_get_minusinf(8, 23, NULL); - break; - case 64: - fc_get_minusinf(11, 52, NULL); - break; - case 80: - fc_get_minusinf(15, 64, NULL); - break; - } + const float_descriptor_t *desc = get_descriptor(mode); + fc_get_minusinf(desc, NULL); return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode); - } else { - assert(0 && "tarval is not floating point"); - return tarval_bad; - } + } else + panic("mode %F does not support -inf value", mode); } /* - * Arithmethic operations on tarvals ======================================== + * Arithmetic operations on tarvals ======================================== */ /* * test if negative number, 1 means 'yes' */ -int tarval_is_negative(tarval *a) { - assert(a); - - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - assert(0 && "tarval_is_negative is not allowed for vector modes"); - return 0; - } - +int tarval_is_negative(ir_tarval *a) +{ switch (get_mode_sort(a->mode)) { case irms_int_number: if (!mode_is_signed(a->mode)) return 0; @@ -689,168 +709,153 @@ int tarval_is_negative(tarval *a) { return sc_comp(a->value, get_mode_null(a->mode)->value) == -1 ? 1 : 0; case irms_float_number: - return fc_comp(a->value, get_mode_null(a->mode)->value) == -1 ? 1 : 0; + return fc_is_negative((const fp_value*) a->value); default: - assert(0 && "not implemented"); - return 0; + panic("mode %F does not support negation value", a->mode); } } /* * test if null, 1 means 'yes' */ -int tarval_is_null(tarval *a) { - ir_mode *m = get_tarval_mode(a); - - return a == get_tarval_null(m); +int tarval_is_null(ir_tarval *a) +{ + return + a != tarval_bad && + a == get_mode_null(get_tarval_mode(a)); } /* * test if one, 1 means 'yes' */ -int tarval_is_one(tarval *a) { - ir_mode *m = get_tarval_mode(a); +int tarval_is_one(ir_tarval *a) +{ + return + a != tarval_bad && + a == get_mode_one(get_tarval_mode(a)); +} - return a == get_tarval_one(m); +int tarval_is_all_one(ir_tarval *tv) +{ + return + tv != tarval_bad && + tv == get_mode_all_one(get_tarval_mode(tv)); +} + +/* + * test if one, 1 means 'yes' + */ +int tarval_is_minus_one(ir_tarval *a) +{ + return + a != tarval_bad && + a == get_mode_minus_one(get_tarval_mode(a)); } /* * comparison */ -pn_Cmp tarval_cmp(tarval *a, tarval *b) { - assert(a); - assert(b); +ir_relation tarval_cmp(ir_tarval *a, ir_tarval *b) +{ + carry_flag = -1; if (a == tarval_bad || b == tarval_bad) { - assert(0 && "Comparison with tarval_bad"); - return pn_Cmp_False; + panic("Comparison with tarval_bad"); } if (a == tarval_undefined || b == tarval_undefined) - return pn_Cmp_False; + return ir_relation_false; if (a->mode != b->mode) - return pn_Cmp_False; - - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - assert(0 && "cmp not implemented for vector modes"); - } + return ir_relation_false; /* Here the two tarvals are unequal and of the same mode */ switch (get_mode_sort(a->mode)) { - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - case irms_reference: - if (a == b) - return pn_Cmp_Eq; - return pn_Cmp_False; - case irms_float_number: - if(no_float) - return pn_Cmp_False; /* * BEWARE: we cannot compare a == b here, because * a NaN is always Unordered to any other value, even to itself! */ - switch (fc_comp(a->value, b->value)) { - case -1: return pn_Cmp_Lt; - case 0: return pn_Cmp_Eq; - case 1: return pn_Cmp_Gt; - case 2: return pn_Cmp_Uo; - default: return pn_Cmp_False; + switch (fc_comp((const fp_value*) a->value, (const fp_value*) b->value)) { + case -1: return ir_relation_less; + case 0: return ir_relation_equal; + case 1: return ir_relation_greater; + case 2: return ir_relation_unordered; + default: return ir_relation_false; } + case irms_reference: case irms_int_number: - case irms_character: if (a == b) - return pn_Cmp_Eq; - return sc_comp(a->value, b->value) == 1 ? pn_Cmp_Gt : pn_Cmp_Lt; + return ir_relation_equal; + return sc_comp(a->value, b->value) == 1 ? ir_relation_greater : ir_relation_less; case irms_internal_boolean: if (a == b) - return pn_Cmp_Eq; - return a == tarval_b_true ? pn_Cmp_Gt : pn_Cmp_Lt; + return ir_relation_equal; + return a == tarval_b_true ? ir_relation_greater : ir_relation_less; + + default: + panic("can't compare values of mode %F", a->mode); } - return pn_Cmp_False; } /* * convert to other mode */ -tarval *tarval_convert_to(tarval *src, ir_mode *m) { - char *buffer; +ir_tarval *tarval_convert_to(ir_tarval *src, ir_mode *dst_mode) +{ + char *buffer; + fp_value *res = NULL; + const float_descriptor_t *desc; + int len; - assert(src); - assert(m); + carry_flag = -1; - if (src->mode == m) return src; + assert(src); + assert(dst_mode); - if (get_mode_n_vector_elems(src->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + if (src->mode == dst_mode) + return src; switch (get_mode_sort(src->mode)) { - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - break; - - /* cast float to something */ + /* cast float to something */ case irms_float_number: - switch (get_mode_sort(m)) { + switch (get_mode_sort(dst_mode)) { case irms_float_number: - switch (get_mode_size_bits(m)) { - case 32: - fc_cast(src->value, 8, 23, NULL); - break; - case 64: - fc_cast(src->value, 11, 52, NULL); - break; - case 80: - fc_cast(src->value, 15, 64, NULL); - break; - default: - break; - } - return get_tarval(fc_get_buffer(), fc_get_buffer_length(), m); + desc = get_descriptor(dst_mode); + fc_cast((const fp_value*) src->value, desc, NULL); + return get_tarval(fc_get_buffer(), fc_get_buffer_length(), dst_mode); case irms_int_number: - switch (GET_FLOAT_TO_INT_MODE()) { + switch (current_float_to_int_mode) { case TRUNCATE: - fc_int(src->value, NULL); + res = fc_int((const fp_value*) src->value, NULL); break; case ROUND: - fc_rnd(src->value, NULL); - break; - default: - assert(0); + res = fc_rnd((const fp_value*) src->value, NULL); break; } - /* FIXME: floating point unit can't produce a value in integer - * representation - * an intermediate representation is needed here first. */ - /* return get_tarval(); */ - return tarval_bad; + buffer = (char*) alloca(sc_get_buffer_length()); + if (! fc_flt2int(res, buffer, dst_mode)) + return tarval_bad; + return get_tarval(buffer, sc_get_buffer_length(), dst_mode); default: - /* the rest can't be converted */ - return tarval_bad; + break; } - break; + /* the rest can't be converted */ + return tarval_bad; /* cast int/characters to something */ case irms_int_number: - case irms_character: - switch (get_mode_sort(m)) { + switch (get_mode_sort(dst_mode)) { + + case irms_reference: case irms_int_number: - case irms_character: - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); memcpy(buffer, src->value, sc_get_buffer_length()); - sign_extend(buffer, m); - return get_tarval_overflow(buffer, src->length, m); + return get_tarval_overflow(buffer, src->length, dst_mode); case irms_internal_boolean: /* XXX C semantics */ @@ -861,30 +866,15 @@ tarval *tarval_convert_to(tarval *src, ir_mode *m) { /* XXX floating point unit does not understand internal integer * representation, convert to string first, then create float from * string */ - buffer = alloca(100); + buffer = (char*) alloca(100); /* decimal string representation because hexadecimal output is * interpreted unsigned by fc_val_from_str, so this is a HACK */ - snprintf(buffer, 100, "%s", + len = snprintf(buffer, 100, "%s", sc_print(src->value, get_mode_size_bits(src->mode), SC_DEC, mode_is_signed(src->mode))); buffer[100 - 1] = '\0'; - switch (get_mode_size_bits(m)) { - case 32: - fc_val_from_str(buffer, 0, 8, 23, NULL); - break; - case 64: - fc_val_from_str(buffer, 0, 11, 52, NULL); - break; - case 80: - fc_val_from_str(buffer, 0, 15, 64, NULL); - break; - } - return get_tarval(fc_get_buffer(), fc_get_buffer_length(), m); - - case irms_reference: - /* allow 0 to be casted */ - if (src == get_mode_null(src->mode)) - return get_mode_null(m); - break; + desc = get_descriptor(dst_mode); + fc_val_from_str(buffer, len, desc, NULL); + return get_tarval(fc_get_buffer(), fc_get_buffer_length(), dst_mode); default: break; @@ -892,28 +882,21 @@ tarval *tarval_convert_to(tarval *src, ir_mode *m) { break; case irms_internal_boolean: - switch (get_mode_sort(m)) { - case irms_int_number: - if (src == tarval_b_true) return get_mode_one(m); - else return get_mode_null(m); - - default: - break; - } + /* beware: this is C semantic for the INTERNAL boolean mode */ + if (get_mode_sort(dst_mode) == irms_int_number) + return src == tarval_b_true ? get_mode_one(dst_mode) : get_mode_null(dst_mode); break; case irms_reference: - switch(get_mode_sort(m)) { - case irms_int_number: - buffer = alloca(sc_get_buffer_length()); + if (get_mode_sort(dst_mode) == irms_int_number) { + buffer = (char*) alloca(sc_get_buffer_length()); memcpy(buffer, src->value, sc_get_buffer_length()); sign_extend(buffer, src->mode); - return get_tarval_overflow(buffer, src->length, m); - default: - break; + return get_tarval_overflow(buffer, src->length, dst_mode); } - break; + default: + return tarval_bad; } return tarval_bad; @@ -922,16 +905,18 @@ tarval *tarval_convert_to(tarval *src, ir_mode *m) { /* * bitwise negation */ -tarval *tarval_not(tarval *a) { +ir_tarval *tarval_not(ir_tarval *a) +{ char *buffer; - assert(a); + carry_flag = -1; /* works for vector mode without changes */ switch (get_mode_sort(a->mode)) { + case irms_reference: case irms_int_number: - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); sc_not(a->value, buffer); return get_tarval(buffer, a->length, a->mode); @@ -943,38 +928,35 @@ tarval *tarval_not(tarval *a) { return tarval_bad; default: - assert(0 && "bitwise negation is only allowed for integer and boolean"); - return tarval_bad; + panic("bitwise negation is only allowed for integer and boolean"); } } /* * arithmetic negation */ -tarval *tarval_neg(tarval *a) { +ir_tarval *tarval_neg(ir_tarval *a) +{ char *buffer; - assert(a); assert(mode_is_num(a->mode)); /* negation only for numerical values */ - /* note: negation is allowed even for unsigned modes. */ + carry_flag = -1; - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + /* note: negation is allowed even for unsigned modes. */ switch (get_mode_sort(a->mode)) { case irms_int_number: - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); sc_neg(a->value, buffer); return get_tarval_overflow(buffer, a->length, a->mode); case irms_float_number: - if(no_float) - return tarval_bad; + /* it should be safe to enable this even if other arithmetic is disabled */ + /*if (no_float) + return tarval_bad;*/ - fc_neg(a->value, NULL); + fc_neg((const fp_value*) a->value, NULL); return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode); default: @@ -985,31 +967,34 @@ tarval *tarval_neg(tarval *a) { /* * addition */ -tarval *tarval_add(tarval *a, tarval *b) { +ir_tarval *tarval_add(ir_tarval *a, ir_tarval *b) +{ char *buffer; - assert(a); - assert(b); - assert(a->mode == b->mode); + carry_flag = -1; - if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(b->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; + if (mode_is_reference(a->mode) && a->mode != b->mode) { + b = tarval_convert_to(b, a->mode); + } else if (mode_is_reference(b->mode) && b->mode != a->mode) { + a = tarval_convert_to(a, b->mode); } + assert(a->mode == b->mode); + switch (get_mode_sort(a->mode)) { - case irms_character: + case irms_reference: case irms_int_number: /* modes of a,b are equal, so result has mode of a as this might be the character */ - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); sc_add(a->value, b->value, buffer); + carry_flag = sc_get_bit_at(buffer, get_mode_size_bits(a->mode)); return get_tarval_overflow(buffer, a->length, a->mode); case irms_float_number: - if(no_float) + if (no_float) return tarval_bad; - fc_add(a->value, b->value, NULL); + fc_add((const fp_value*) a->value, (const fp_value*) b->value, NULL); return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode); default: @@ -1020,30 +1005,34 @@ tarval *tarval_add(tarval *a, tarval *b) { /* * subtraction */ -tarval *tarval_sub(tarval *a, tarval *b) { - char *buffer; +ir_tarval *tarval_sub(ir_tarval *a, ir_tarval *b, ir_mode *dst_mode) +{ + char *buffer; - assert(a); - assert(b); - assert(a->mode == b->mode); + carry_flag = -1; - if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(b->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; + if (dst_mode != NULL) { + if (a->mode != dst_mode) + a = tarval_convert_to(a, dst_mode); + if (b->mode != dst_mode) + b = tarval_convert_to(b, dst_mode); } + assert(a->mode == b->mode); + switch (get_mode_sort(a->mode)) { - case irms_character: + case irms_reference: case irms_int_number: /* modes of a,b are equal, so result has mode of a as this might be the character */ - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); sc_sub(a->value, b->value, buffer); + carry_flag = sc_get_bit_at(buffer, get_mode_size_bits(a->mode)); return get_tarval_overflow(buffer, a->length, a->mode); case irms_float_number: - if(no_float) + if (no_float) return tarval_bad; - fc_sub(a->value, b->value, NULL); + fc_sub((const fp_value*) a->value, (const fp_value*) b->value, NULL); return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode); default: @@ -1054,30 +1043,26 @@ tarval *tarval_sub(tarval *a, tarval *b) { /* * multiplication */ -tarval *tarval_mul(tarval *a, tarval *b) { +ir_tarval *tarval_mul(ir_tarval *a, ir_tarval *b) +{ char *buffer; - assert(a); - assert(b); assert(a->mode == b->mode); - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; switch (get_mode_sort(a->mode)) { case irms_int_number: /* modes of a,b are equal */ - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); sc_mul(a->value, b->value, buffer); return get_tarval_overflow(buffer, a->length, a->mode); case irms_float_number: - if(no_float) + if (no_float) return tarval_bad; - fc_mul(a->value, b->value, NULL); + fc_mul((const fp_value*) a->value, (const fp_value*) b->value, NULL); return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode); default: @@ -1086,102 +1071,103 @@ tarval *tarval_mul(tarval *a, tarval *b) { } /* - * floating point division + * division + * overflow is impossible, but look out for division by zero */ -tarval *tarval_quo(tarval *a, tarval *b) { - assert(a); - assert(b); - assert((a->mode == b->mode) && mode_is_float(a->mode)); +ir_tarval *tarval_div(ir_tarval *a, ir_tarval *b) +{ + ir_mode *mode = a->mode; + assert(mode == b->mode); - if(no_float) - return tarval_bad; + carry_flag = -1; - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + if (mode_is_int(mode)) { + /* x/0 error */ + if (b == get_mode_null(mode)) + return tarval_bad; - fc_div(a->value, b->value, NULL); - return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode); + /* modes of a,b are equal */ + sc_div(a->value, b->value, NULL); + return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); + } else { + assert(mode_is_float(mode)); + fc_div((const fp_value*) a->value, (const fp_value*) b->value, NULL); + return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), mode); + } } /* - * integer division + * remainder * overflow is impossible, but look out for division by zero */ -tarval *tarval_div(tarval *a, tarval *b) { - assert(a); - assert(b); +ir_tarval *tarval_mod(ir_tarval *a, ir_tarval *b) +{ assert((a->mode == b->mode) && mode_is_int(a->mode)); - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; /* x/0 error */ if (b == get_mode_null(b->mode)) return tarval_bad; /* modes of a,b are equal */ - sc_div(a->value, b->value, NULL); + sc_mod(a->value, b->value, NULL); return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); } /* - * remainder + * integer division AND remainder * overflow is impossible, but look out for division by zero */ -tarval *tarval_mod(tarval *a, tarval *b) { - assert(a); - assert(b); +ir_tarval *tarval_divmod(ir_tarval *a, ir_tarval *b, ir_tarval **mod) +{ + int len = sc_get_buffer_length(); + char *div_res = (char*) alloca(len); + char *mod_res = (char*) alloca(len); + assert((a->mode == b->mode) && mode_is_int(a->mode)); - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; /* x/0 error */ if (b == get_mode_null(b->mode)) return tarval_bad; /* modes of a,b are equal */ - sc_mod(a->value, b->value, NULL); - return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); + sc_divmod(a->value, b->value, div_res, mod_res); + *mod = get_tarval(mod_res, len, a->mode); + return get_tarval(div_res, len, a->mode); } /* * absolute value */ -tarval *tarval_abs(tarval *a) { +ir_tarval *tarval_abs(ir_tarval *a) +{ char *buffer; - assert(a); + carry_flag = -1; assert(mode_is_num(a->mode)); - if (get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } - switch (get_mode_sort(a->mode)) { case irms_int_number: if (sc_comp(a->value, get_mode_null(a->mode)->value) == -1) { - buffer = alloca(sc_get_buffer_length()); + buffer = (char*) alloca(sc_get_buffer_length()); sc_neg(a->value, buffer); return get_tarval_overflow(buffer, a->length, a->mode); } return a; case irms_float_number: - if(no_float) - return tarval_bad; + /* it should be safe to enable this even if other arithmetic is disabled */ + /*if (no_float) + return tarval_bad;*/ - if (fc_comp(a->value, get_mode_null(a->mode)->value) == -1) { - fc_neg(a->value, NULL); + if (fc_comp((const fp_value*) a->value, + (const fp_value*) get_mode_null(a->mode)->value) == -1) { + fc_neg((const fp_value*) a->value, NULL); return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode); } return a; default: - return tarval_bad; + break; } return tarval_bad; } @@ -1189,92 +1175,109 @@ tarval *tarval_abs(tarval *a) { /* * bitwise and */ -tarval *tarval_and(tarval *a, tarval *b) { - assert(a); - assert(b); +ir_tarval *tarval_and(ir_tarval *a, ir_tarval *b) +{ assert(a->mode == b->mode); /* works even for vector modes */ + carry_flag = 0; - switch(get_mode_sort(a->mode)) { + switch (get_mode_sort(a->mode)) { case irms_internal_boolean: return (a == tarval_b_false) ? a : b; + case irms_reference: case irms_int_number: sc_and(a->value, b->value, NULL); return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); default: - assert(0 && "operation not defined on mode"); - return tarval_bad; + panic("operation not defined on mode"); + } +} + +ir_tarval *tarval_andnot(ir_tarval *a, ir_tarval *b) +{ + assert(a->mode == b->mode); + + /* works even for vector modes */ + carry_flag = 0; + + switch (get_mode_sort(a->mode)) { + case irms_internal_boolean: + return a == tarval_b_true && b == tarval_b_false ? tarval_b_true : tarval_b_false; + + case irms_reference: + case irms_int_number: + sc_andnot(a->value, b->value, NULL); + return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); + + default: + panic("operation not defined on mode"); } } /* * bitwise or */ -tarval *tarval_or (tarval *a, tarval *b) { - assert(a); - assert(b); +ir_tarval *tarval_or(ir_tarval *a, ir_tarval *b) +{ assert(a->mode == b->mode); /* works even for vector modes */ + carry_flag = 0; switch (get_mode_sort(a->mode)) { case irms_internal_boolean: return (a == tarval_b_true) ? a : b; + case irms_reference: case irms_int_number: sc_or(a->value, b->value, NULL); return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); default: - assert(0 && "operation not defined on mode"); - return tarval_bad; + panic("operation not defined on mode"); } } /* * bitwise exclusive or (xor) */ -tarval *tarval_eor(tarval *a, tarval *b) { - assert(a); - assert(b); +ir_tarval *tarval_eor(ir_tarval *a, ir_tarval *b) +{ assert((a->mode == b->mode)); /* works even for vector modes */ + carry_flag = 0; switch (get_mode_sort(a->mode)) { case irms_internal_boolean: return (a == b)? tarval_b_false : tarval_b_true; + case irms_reference: case irms_int_number: sc_xor(a->value, b->value, NULL); return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); default: - assert(0 && "operation not defined on mode"); - return tarval_bad;; + panic("operation not defined on mode"); } } /* * bitwise left shift */ -tarval *tarval_shl(tarval *a, tarval *b) { +ir_tarval *tarval_shl(ir_tarval *a, ir_tarval *b) +{ char *temp_val = NULL; - assert(a); - assert(b); assert(mode_is_int(a->mode) && mode_is_int(b->mode)); - if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; if (get_mode_modulo_shift(a->mode) != 0) { - temp_val = alloca(sc_get_buffer_length()); + temp_val = (char*) alloca(sc_get_buffer_length()); sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val); sc_mod(b->value, temp_val, temp_val); @@ -1288,20 +1291,16 @@ tarval *tarval_shl(tarval *a, tarval *b) { /* * bitwise unsigned right shift */ -tarval *tarval_shr(tarval *a, tarval *b) { +ir_tarval *tarval_shr(ir_tarval *a, ir_tarval *b) +{ char *temp_val = NULL; - assert(a); - assert(b); assert(mode_is_int(a->mode) && mode_is_int(b->mode)); - if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; if (get_mode_modulo_shift(a->mode) != 0) { - temp_val = alloca(sc_get_buffer_length()); + temp_val = (char*) alloca(sc_get_buffer_length()); sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val); sc_mod(b->value, temp_val, temp_val); @@ -1315,20 +1314,16 @@ tarval *tarval_shr(tarval *a, tarval *b) { /* * bitwise signed right shift */ -tarval *tarval_shrs(tarval *a, tarval *b) { +ir_tarval *tarval_shrs(ir_tarval *a, ir_tarval *b) +{ char *temp_val = NULL; - assert(a); - assert(b); assert(mode_is_int(a->mode) && mode_is_int(b->mode)); - if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; if (get_mode_modulo_shift(a->mode) != 0) { - temp_val = alloca(sc_get_buffer_length()); + temp_val = (char*) alloca(sc_get_buffer_length()); sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val); sc_mod(b->value, temp_val, temp_val); @@ -1340,43 +1335,43 @@ tarval *tarval_shrs(tarval *a, tarval *b) { } /* - * bitwise rotation + * bitwise rotation to left */ -tarval *tarval_rot(tarval *a, tarval *b) { +ir_tarval *tarval_rotl(ir_tarval *a, ir_tarval *b) +{ char *temp_val = NULL; - assert(a); - assert(b); assert(mode_is_int(a->mode) && mode_is_int(b->mode)); - if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) { - /* vector arithmetic not implemented yet */ - return tarval_bad; - } + carry_flag = -1; if (get_mode_modulo_shift(a->mode) != 0) { - temp_val = alloca(sc_get_buffer_length()); + temp_val = (char*) alloca(sc_get_buffer_length()); sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val); sc_mod(b->value, temp_val, temp_val); } else temp_val = (char*)b->value; - sc_rot(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL); + sc_rotl(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL); return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode); } /* * carry flag of the last operation */ -int tarval_carry(void) { - return sc_had_carry(); +int tarval_carry(void) +{ + if (carry_flag == -1) + panic("Carry undefined for the last operation"); + return carry_flag; } /* * Output of tarvals */ -int tarval_snprintf(char *buf, size_t len, tarval *tv) { +int tarval_snprintf(char *buf, size_t len, ir_tarval *tv) +{ static const tarval_mode_info default_info = { TVO_NATIVE, NULL, NULL }; const char *str; @@ -1384,7 +1379,7 @@ int tarval_snprintf(char *buf, size_t len, tarval *tv) { const tarval_mode_info *mode_info; const char *prefix, *suffix; - mode_info = tv->mode->tv_priv; + mode_info = (const tarval_mode_info*) tv->mode->tv_priv; if (! mode_info) mode_info = &default_info; prefix = mode_info->mode_prefix ? mode_info->mode_prefix : ""; @@ -1393,9 +1388,8 @@ int tarval_snprintf(char *buf, size_t len, tarval *tv) { switch (get_mode_sort(tv->mode)) { case irms_reference: if (tv == tv->mode->null) return snprintf(buf, len, "NULL"); - /* fall through */ + /* FALLTHROUGH */ case irms_int_number: - case irms_character: switch (mode_info->mode_output) { case TVO_DECIMAL: @@ -1406,8 +1400,9 @@ int tarval_snprintf(char *buf, size_t len, tarval *tv) { str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_OCT, 0); break; - case TVO_HEX: case TVO_NATIVE: + prefix = "0x"; + case TVO_HEX: default: str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_HEX, 0); break; @@ -1417,17 +1412,16 @@ int tarval_snprintf(char *buf, size_t len, tarval *tv) { case irms_float_number: switch (mode_info->mode_output) { case TVO_HEX: - return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_PACKED), suffix); + return snprintf(buf, len, "%s%s%s", prefix, fc_print((const fp_value*) tv->value, tv_buf, sizeof(tv_buf), FC_PACKED), suffix); case TVO_HEXFLOAT: - return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_HEX), suffix); + return snprintf(buf, len, "%s%s%s", prefix, fc_print((const fp_value*) tv->value, tv_buf, sizeof(tv_buf), FC_HEX), suffix); case TVO_FLOAT: case TVO_NATIVE: default: - return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_DEC), suffix); + return snprintf(buf, len, "%s%s%s", prefix, fc_print((const fp_value*) tv->value, tv_buf, sizeof(tv_buf), FC_DEC), suffix); } - break; case irms_internal_boolean: switch (mode_info->mode_output) { @@ -1443,39 +1437,37 @@ int tarval_snprintf(char *buf, size_t len, tarval *tv) { return snprintf(buf, len, "%s%s%s", prefix, (tv == tarval_b_true) ? "true" : "false", suffix); } - case irms_control_flow: - case irms_memory: - case irms_auxiliary: - return snprintf(buf, len, ""); + default: + return snprintf(buf, len, ""); } - - return 0; } /** * Output of tarvals to stdio. */ -int tarval_printf(tarval *tv) { +int tarval_printf(ir_tarval *tv) +{ char buf[1024]; int res; res = tarval_snprintf(buf, sizeof(buf), tv); assert(res < (int) sizeof(buf) && "buffer to small for tarval_snprintf"); - printf(buf); + printf("%s", buf); return res; } -char *get_tarval_bitpattern(tarval *tv) { +char *get_tarval_bitpattern(ir_tarval *tv) +{ int i, j, pos = 0; int n = get_mode_size_bits(tv->mode); int bytes = (n + 7) / 8; - char *res = xmalloc((n + 1) * sizeof(char)); + char *res = XMALLOCN(char, n + 1); unsigned char byte; - for(i = 0; i < bytes; i++) { + for (i = 0; i < bytes; i++) { byte = get_tarval_sub_bits(tv, i); - for(j = 1; j < 256; j <<= 1) - if(pos < n) + for (j = 1; j < 256; j <<= 1) + if (pos < n) res[pos++] = j & byte ? '1' : '0'; } @@ -1487,17 +1479,15 @@ char *get_tarval_bitpattern(tarval *tv) { /* * access to the bitpattern */ -unsigned char get_tarval_sub_bits(tarval *tv, unsigned byte_ofs) { - switch (get_mode_sort(tv->mode)) { - case irms_int_number: - case irms_character: - return sc_sub_bits(tv->value, tv->length, byte_ofs); - - case irms_float_number: - return fc_sub_bits(tv->value, get_mode_size_bits(tv->mode), byte_ofs); - +unsigned char get_tarval_sub_bits(ir_tarval *tv, unsigned byte_ofs) +{ + switch (get_mode_arithmetic(tv->mode)) { + case irma_twos_complement: + return sc_sub_bits(tv->value, get_mode_size_bits(tv->mode), byte_ofs); + case irma_ieee754: + return fc_sub_bits((const fp_value*) tv->value, get_mode_size_bits(tv->mode), byte_ofs); default: - return 0; + panic("get_tarval_sub_bits(): arithmetic mode not supported"); } } @@ -1508,7 +1498,8 @@ unsigned char get_tarval_sub_bits(tarval *tv, unsigned byte_ofs) { * * Returns zero on success. */ -int set_tarval_mode_output_option(ir_mode *mode, const tarval_mode_info *modeinfo) { +int set_tarval_mode_output_option(ir_mode *mode, const tarval_mode_info *modeinfo) +{ assert(mode); mode->tv_priv = modeinfo; @@ -1520,40 +1511,19 @@ int set_tarval_mode_output_option(ir_mode *mode, const tarval_mode_info *modein * * This functions returns the mode info of a given mode. */ -const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode) { +const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode) +{ assert(mode); - return mode->tv_priv; -} - -/* - * Identifying tarvals values for algebraic simplifications. - * - * Returns: - * - TV_CLASSIFY_NULL for additive neutral or the NULL tarval for reference modes, - * - TV_CLASSIFY_ONE for multiplicative neutral, - * - TV_CLASSIFY_ALL_ONE for bitwise-and neutral - * - TV_CLASSIFY_OTHER else - */ -tarval_classification_t classify_tarval(tarval *tv) { - if (!tv || tv == tarval_bad) return TV_CLASSIFY_OTHER; - - if (tv == get_mode_null(tv->mode)) - return TV_CLASSIFY_NULL; - else if (tv == get_mode_one(tv->mode)) - return TV_CLASSIFY_ONE; - else if ((get_mode_sort(tv->mode) == irms_int_number) - && (tv == new_tarval_from_long(-1, tv->mode))) - return TV_CLASSIFY_ALL_ONE; - - return TV_CLASSIFY_OTHER; + return (const tarval_mode_info*) mode->tv_priv; } /* * Returns non-zero if a given (integer) tarval has only one single bit * set. */ -int is_single_bit_tarval(tarval *tv) { +int tarval_is_single_bit(ir_tarval *tv) +{ int i, l; int bits; @@ -1576,19 +1546,144 @@ int is_single_bit_tarval(tarval *tv) { } /* - * Sets the overflow mode for integer operations. + * Return the number of set bits in a given (integer) tarval. */ -void tarval_set_integer_overflow_mode(tarval_int_overflow_mode_t ov_mode) { - int_overflow_mode = ov_mode; +int get_tarval_popcount(ir_tarval *tv) +{ + int i, l; + int bits; + + if (!tv || tv == tarval_bad) return -1; + if (! mode_is_int(tv->mode)) return -1; + + l = get_mode_size_bytes(tv->mode); + for (bits = 0, i = l - 1; i >= 0; --i) { + unsigned char v = get_tarval_sub_bits(tv, (unsigned)i); + + bits += popcount(v); + } + return bits; } /** - * Get the overflow mode for integer operations. + * Return the number of the lowest set bit in a given (integer) tarval. + * + * @param tv the tarval + * + * @return number of lowest set bit or -1 on error */ -tarval_int_overflow_mode_t tarval_get_integer_overflow_mode(void) { +int get_tarval_lowest_bit(ir_tarval *tv) +{ + int i, l; + + if (!tv || tv == tarval_bad) return -1; + if (! mode_is_int(tv->mode)) return -1; + + l = get_mode_size_bytes(tv->mode); + for (i = 0; i < l; ++i) { + unsigned char v = get_tarval_sub_bits(tv, (unsigned)i); + + if (v) + return ntz(v) + i * 8; + } + return -1; +} + +/* + * Returns non-zero if the mantissa of a floating point IEEE-754 + * tarval is zero (i.e. 1.0Exxx) + */ +int tarval_zero_mantissa(ir_tarval *tv) +{ + assert(get_mode_arithmetic(tv->mode) == irma_ieee754 + || get_mode_arithmetic(tv->mode) == irma_x86_extended_float); + return fc_zero_mantissa((const fp_value*) tv->value); +} + +/* Returns the exponent of a floating point IEEE-754 tarval. */ +int tarval_get_exponent(ir_tarval *tv) +{ + assert(get_mode_arithmetic(tv->mode) == irma_ieee754 + || get_mode_arithmetic(tv->mode) == irma_x86_extended_float); + return fc_get_exponent((const fp_value*) tv->value); +} + +/* + * Check if the tarval can be converted to the given mode without + * precision loss. + */ +int tarval_ieee754_can_conv_lossless(ir_tarval *tv, ir_mode *mode) +{ + const float_descriptor_t *desc = get_descriptor(mode); + return fc_can_lossless_conv_to((const fp_value*) tv->value, desc); +} + +/* Returns non-zero if the result of the last IEEE-754 operation was exact. */ +unsigned tarval_ieee754_get_exact(void) +{ + return fc_is_exact(); +} + +/* check if its the a floating point NaN */ +int tarval_is_NaN(ir_tarval *tv) +{ + if (! mode_is_float(tv->mode)) + return 0; + return fc_is_nan((const fp_value*) tv->value); +} + +/* check if its the a floating point +inf */ +int tarval_is_plus_inf(ir_tarval *tv) +{ + if (! mode_is_float(tv->mode)) + return 0; + return fc_is_inf((const fp_value*) tv->value) + && !fc_is_negative((const fp_value*) tv->value); +} + +/* check if its the a floating point -inf */ +int tarval_is_minus_inf(ir_tarval *tv) +{ + if (! mode_is_float(tv->mode)) + return 0; + return fc_is_inf((const fp_value*) tv->value) + && fc_is_negative((const fp_value*) tv->value); +} + +/* check if the tarval represents a finite value */ +int tarval_is_finite(ir_tarval *tv) +{ + if (mode_is_float(tv->mode)) + return !fc_is_nan((const fp_value*) tv->value) + && !fc_is_inf((const fp_value*) tv->value); + return 1; +} + +/* + * Sets the overflow mode for integer operations. + */ +void tarval_set_integer_overflow_mode(tarval_int_overflow_mode_t ov_mode) +{ + int_overflow_mode = ov_mode; +} + +/* Get the overflow mode for integer operations. */ +tarval_int_overflow_mode_t tarval_get_integer_overflow_mode(void) +{ return int_overflow_mode; } +/* Enable/Disable floating point constant folding. */ +void tarval_enable_fp_ops(int enable) +{ + no_float = !enable; +} + +int tarval_fp_ops_enabled(void) +{ + return !no_float; +} + /** * default mode_info for output as HEX */ @@ -1601,45 +1696,55 @@ static const tarval_mode_info hex_output = { /* * Initialization of the tarval module: called before init_mode() */ -void init_tarval_1(long null_value) { +void init_tarval_1(long null_value, int support_quad_precision) +{ + /* if these assertion fail, tarval_is_constant() will follow ... */ + assert(tarval_b_false == &reserved_tv[0] && "b_false MUST be the first reserved tarval!"); + assert(tarval_b_true == &reserved_tv[1] && "b_true MUST be the second reserved tarval!"); + _null_value = null_value; /* initialize the sets holding the tarvals with a comparison function and * an initial size, which is the expected number of constants */ - tarvals = new_set(memcmp, N_CONSTANTS); + tarvals = new_set(cmp_tv, N_CONSTANTS); values = new_set(memcmp, N_CONSTANTS); - /* init strcalc with precision of 68 to support floating point values with 64 - * bit mantissa (needs extra bits for rounding and overflow) */ - init_strcalc(68); - init_fltcalc(0); + /* calls init_strcalc() with needed size */ + init_fltcalc(support_quad_precision ? 112 : 64); } /* * Initialization of the tarval module: called after init_mode() */ -void init_tarval_2(void) { - tarval_bad->kind = k_tarval; - tarval_bad->mode = mode_BAD; - tarval_bad->value = INT_TO_PTR(resid_tarval_bad); +void init_tarval_2(void) +{ + tarval_bad->kind = k_tarval; + tarval_bad->mode = mode_BAD; + tarval_bad->value = INT_TO_PTR(resid_tarval_bad); + + tarval_undefined->kind = k_tarval; + tarval_undefined->mode = mode_ANY; + tarval_undefined->value = INT_TO_PTR(resid_tarval_undefined); + + tarval_b_true->kind = k_tarval; + tarval_b_true->mode = mode_b; + tarval_b_true->value = INT_TO_PTR(resid_tarval_b_true); - tarval_undefined->kind = k_tarval; - tarval_undefined->mode = mode_ANY; - tarval_undefined->value = INT_TO_PTR(resid_tarval_undefined); + tarval_b_false->kind = k_tarval; + tarval_b_false->mode = mode_b; + tarval_b_false->value = INT_TO_PTR(resid_tarval_b_false); - tarval_b_true->kind = k_tarval; - tarval_b_true->mode = mode_b; - tarval_b_true->value = INT_TO_PTR(resid_tarval_b_true); + tarval_unreachable->kind = k_tarval; + tarval_unreachable->mode = mode_X; + tarval_unreachable->value = INT_TO_PTR(resid_tarval_unreachable); - tarval_b_false->kind = k_tarval; - tarval_b_false->mode = mode_b; - tarval_b_false->value = INT_TO_PTR(resid_tarval_b_false); + tarval_reachable->kind = k_tarval; + tarval_reachable->mode = mode_X; + tarval_reachable->value = INT_TO_PTR(resid_tarval_reachable); /* * assign output modes that are compatible with the * old implementation: Hex output */ - set_tarval_mode_output_option(mode_U, &hex_output); - set_tarval_mode_output_option(mode_C, &hex_output); set_tarval_mode_output_option(mode_Bs, &hex_output); set_tarval_mode_output_option(mode_Bu, &hex_output); set_tarval_mode_output_option(mode_Hs, &hex_output); @@ -1649,16 +1754,18 @@ void init_tarval_2(void) { set_tarval_mode_output_option(mode_Ls, &hex_output); set_tarval_mode_output_option(mode_Lu, &hex_output); set_tarval_mode_output_option(mode_P, &hex_output); - } +} /* free all memory occupied by tarval. */ -void finish_tarval(void) { - finish_strcalc (); - finish_fltcalc (); +void finish_tarval(void) +{ + finish_strcalc(); + finish_fltcalc(); del_set(tarvals); tarvals = NULL; del_set(values); values = NULL; } -/**************************************************************************** - * end of tv.c - ****************************************************************************/ +int (is_tarval)(const void *thing) +{ + return _is_tarval(thing); +}