/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2010 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
* @file
* @brief ia32 architecture variants
* @author Michael Beck, Matthias Braun
- * @version $Id: bearch_ia32_t.h 16363 2007-10-25 23:27:07Z beck $
*/
#include "config.h"
#include "bearch_ia32_t.h"
#include "ia32_architecture.h"
+#undef NATIVE_X86
+
+#ifdef _MSC_VER
+#if defined(_M_IX86) || defined(_M_X64)
+#include <intrin.h>
+#define NATIVE_X86
+#endif
+#else
+#if defined(__i386__) || defined(__x86_64__)
+#define NATIVE_X86
+#endif
+#endif
+
ia32_code_gen_config_t ia32_cg_config;
/**
arch_all_amd = arch_k6 | arch_geode | arch_athlon_plus,
arch_feature_mmx = 0x00004000, /**< MMX instructions */
- arch_feature_p6_insn = 0x00008000, /**< PentiumPro instructions */
- arch_feature_sse1 = 0x00010000, /**< SSE1 instructions */
- arch_feature_sse2 = 0x00020000, /**< SSE2 instructions */
- arch_feature_sse3 = 0x00040000, /**< SSE3 instructions */
- arch_feature_ssse3 = 0x00080000, /**< SSSE3 instructions */
- arch_feature_3DNow = 0x00100000, /**< 3DNow! instructions */
- arch_feature_3DNowE = 0x00200000, /**< Enhanced 3DNow! instructions */
- arch_feature_64bit = 0x00400000, /**< x86_64 support */
+ arch_feature_cmov = 0x00008000, /**< cmov instructions */
+ arch_feature_p6_insn = 0x00010000, /**< PentiumPro instructions */
+ arch_feature_sse1 = 0x00020000, /**< SSE1 instructions */
+ arch_feature_sse2 = 0x00040000, /**< SSE2 instructions */
+ arch_feature_sse3 = 0x00080000, /**< SSE3 instructions */
+ arch_feature_ssse3 = 0x00100000, /**< SSSE3 instructions */
+ arch_feature_3DNow = 0x00200000, /**< 3DNow! instructions */
+ arch_feature_3DNowE = 0x00400000, /**< Enhanced 3DNow! instructions */
+ arch_feature_64bit = 0x00800000, /**< x86_64 support */
+ arch_feature_sse4_1 = 0x01000000, /**< SSE4.1 instructions */
+ arch_feature_sse4_2 = 0x02000000, /**< SSE4.2 instructions */
+ arch_feature_sse4a = 0x04000000, /**< SSE4a instructions */
+ arch_feature_popcnt = 0x08000000, /**< popcnt instruction */
arch_mmx_insn = arch_feature_mmx, /**< MMX instructions */
- arch_sse1_insn = arch_feature_sse1 | arch_mmx_insn, /**< SSE1 instructions, include MMX */
- arch_sse2_insn = arch_feature_sse2 | arch_sse1_insn, /**< SSE2 instructions, include SSE1 */
- arch_sse3_insn = arch_feature_sse3 | arch_sse2_insn, /**< SSE3 instructions, include SSE2 */
- arch_ssse3_insn = arch_feature_ssse3 | arch_sse3_insn, /**< SSSE3 instructions, include SSE3 */
-
- arch_3DNow_insn = arch_feature_3DNow | arch_feature_mmx, /**< 3DNow! instructions, including MMX */
+ arch_sse1_insn = arch_feature_sse1 | arch_mmx_insn, /**< SSE1 instructions, include MMX */
+ arch_sse2_insn = arch_feature_sse2 | arch_sse1_insn, /**< SSE2 instructions, include SSE1 */
+ arch_sse3_insn = arch_feature_sse3 | arch_sse2_insn, /**< SSE3 instructions, include SSE2 */
+ arch_ssse3_insn = arch_feature_ssse3 | arch_sse3_insn, /**< SSSE3 instructions, include SSE3 */
+ arch_sse4_1_insn = arch_feature_sse4_1 | arch_ssse3_insn, /**< SSE4.1 instructions, include SSSE3 */
+ arch_sse4_2_insn = arch_feature_sse4_2 | arch_sse4_1_insn, /**< SSE4.2 instructions, include SSE4.1 */
+ arch_sse4a_insn = arch_feature_sse4a | arch_ssse3_insn, /**< SSE4a instructions, include SSSE3 */
+
+ arch_3DNow_insn = arch_feature_3DNow | arch_feature_mmx, /**< 3DNow! instructions, including MMX */
arch_3DNowE_insn = arch_feature_3DNowE | arch_3DNow_insn, /**< Enhanced 3DNow! instructions */
arch_64bit_insn = arch_feature_64bit | arch_sse2_insn, /**< x86_64 support, includes SSE2 */
};
/**
* CPU's.
*/
-enum cpu_support {
- cpu_generic = arch_generic32,
+typedef enum cpu_support {
+ cpu_generic = arch_generic32,
/* intel CPUs */
- cpu_i386 = arch_i386,
- cpu_i486 = arch_i486,
- cpu_pentium = arch_pentium,
- cpu_pentium_mmx = arch_pentium | arch_mmx_insn,
- cpu_pentium_pro = arch_ppro | arch_feature_p6_insn,
- cpu_pentium_2 = arch_ppro | arch_feature_p6_insn | arch_mmx_insn,
- cpu_pentium_3 = arch_ppro | arch_feature_p6_insn | arch_sse1_insn,
- cpu_pentium_m = arch_ppro | arch_feature_p6_insn | arch_sse2_insn,
- cpu_pentium_4 = arch_netburst | arch_feature_p6_insn | arch_sse2_insn,
- cpu_prescott = arch_nocona | arch_feature_p6_insn | arch_sse3_insn,
- cpu_nocona = arch_nocona | arch_feature_p6_insn | arch_64bit_insn | arch_sse3_insn,
- cpu_core2 = arch_core2 | arch_feature_p6_insn | arch_64bit_insn | arch_ssse3_insn,
+ cpu_i386 = arch_i386,
+ cpu_i486 = arch_i486,
+ cpu_pentium = arch_pentium,
+ cpu_pentium_mmx = arch_pentium | arch_mmx_insn,
+ cpu_pentium_pro_generic = arch_ppro | arch_feature_p6_insn,
+ cpu_pentium_pro = arch_ppro | arch_feature_cmov | arch_feature_p6_insn,
+ cpu_pentium_2 = arch_ppro | arch_feature_cmov | arch_feature_p6_insn | arch_mmx_insn,
+ cpu_pentium_3 = arch_ppro | arch_feature_cmov | arch_feature_p6_insn | arch_sse1_insn,
+ cpu_pentium_m = arch_ppro | arch_feature_cmov | arch_feature_p6_insn | arch_sse2_insn,
+ cpu_netburst_generic = arch_netburst | arch_feature_p6_insn,
+ cpu_pentium_4 = arch_netburst | arch_feature_cmov | arch_feature_p6_insn | arch_sse2_insn,
+ cpu_prescott = arch_nocona | arch_feature_cmov | arch_feature_p6_insn | arch_sse3_insn,
+ cpu_nocona = arch_nocona | arch_feature_cmov | arch_feature_p6_insn | arch_64bit_insn | arch_sse3_insn,
+ cpu_core2_generic = arch_core2 | arch_feature_p6_insn,
+ cpu_core2 = arch_core2 | arch_feature_cmov | arch_feature_p6_insn | arch_64bit_insn | arch_ssse3_insn,
+ cpu_penryn = arch_core2 | arch_feature_cmov | arch_feature_p6_insn | arch_64bit_insn | arch_sse4_1_insn,
+ cpu_atom_generic = arch_atom | arch_feature_p6_insn,
+ cpu_atom = arch_atom | arch_feature_cmov | arch_feature_p6_insn | arch_ssse3_insn,
/* AMD CPUs */
- cpu_k6 = arch_k6 | arch_mmx_insn,
- cpu_k6_PLUS = arch_k6 | arch_3DNow_insn,
- cpu_geode = arch_geode | arch_sse1_insn | arch_3DNowE_insn,
- cpu_athlon = arch_athlon | arch_sse1_insn | arch_3DNowE_insn | arch_feature_p6_insn,
- cpu_athlon64 = arch_athlon | arch_sse2_insn | arch_3DNowE_insn | arch_feature_p6_insn | arch_64bit_insn,
- cpu_k8 = arch_k8 | arch_3DNowE_insn | arch_feature_p6_insn | arch_64bit_insn,
- cpu_k8_sse3 = arch_k8 | arch_3DNowE_insn | arch_feature_p6_insn | arch_64bit_insn | arch_sse3_insn,
- cpu_k10 = arch_k10 | arch_3DNowE_insn | arch_feature_p6_insn | arch_64bit_insn | arch_sse3_insn,
+ cpu_k6_generic = arch_k6,
+ cpu_k6 = arch_k6 | arch_mmx_insn,
+ cpu_k6_PLUS = arch_k6 | arch_3DNow_insn,
+ cpu_geode_generic = arch_geode,
+ cpu_geode = arch_geode | arch_sse1_insn | arch_3DNowE_insn,
+ cpu_athlon_generic = arch_athlon | arch_feature_p6_insn,
+ cpu_athlon_old = arch_athlon | arch_3DNowE_insn | arch_feature_cmov | arch_feature_p6_insn,
+ cpu_athlon = arch_athlon | arch_sse1_insn | arch_3DNowE_insn | arch_feature_cmov | arch_feature_p6_insn,
+ cpu_athlon64 = arch_athlon | arch_sse2_insn | arch_3DNowE_insn | arch_feature_cmov | arch_feature_p6_insn | arch_64bit_insn,
+ cpu_k8_generic = arch_k8 | arch_feature_p6_insn,
+ cpu_k8 = arch_k8 | arch_3DNowE_insn | arch_feature_cmov | arch_feature_p6_insn | arch_64bit_insn,
+ cpu_k8_sse3 = arch_k8 | arch_3DNowE_insn | arch_feature_cmov | arch_feature_p6_insn | arch_64bit_insn | arch_sse3_insn,
+ cpu_k10_generic = arch_k10 | arch_feature_p6_insn,
+ cpu_k10 = arch_k10 | arch_3DNowE_insn | arch_feature_cmov | arch_feature_p6_insn | arch_feature_popcnt | arch_64bit_insn | arch_sse4a_insn,
/* other CPUs */
cpu_winchip_c6 = arch_i486 | arch_feature_mmx,
cpu_winchip2 = arch_i486 | arch_feature_mmx | arch_feature_3DNow,
cpu_c3 = arch_i486 | arch_feature_mmx | arch_feature_3DNow,
- cpu_c3_2 = arch_ppro | arch_feature_p6_insn | arch_sse1_insn, /* really no 3DNow! */
-};
+ cpu_c3_2 = arch_ppro | arch_feature_cmov | arch_feature_p6_insn | arch_sse1_insn, /* really no 3DNow! */
+
+ cpu_autodetect = 0,
+} cpu_support;
static int opt_size = 0;
+static int emit_machcode = 0;
static cpu_support arch = cpu_generic;
static cpu_support opt_arch = cpu_generic;
-static int use_sse2 = 0;
+static int fpu_arch = 0;
static int opt_cc = 1;
static int opt_unsafe_floatconv = 0;
{ "nocona", cpu_nocona },
{ "merom", cpu_core2 },
{ "core2", cpu_core2 },
+ { "penryn", cpu_penryn },
+ { "atom", cpu_atom },
{ "k6", cpu_k6 },
{ "k6-2", cpu_k6_PLUS },
{ "k6-3", cpu_k6_PLUS },
{ "geode", cpu_geode },
- { "athlon", cpu_athlon },
+ { "athlon", cpu_athlon_old },
{ "athlon-tbird", cpu_athlon },
{ "athlon-4", cpu_athlon },
{ "athlon-xp", cpu_athlon },
{ "generic", cpu_generic },
{ "generic32", cpu_generic },
+
+#ifdef NATIVE_X86
+ { "native", cpu_autodetect },
+#endif
+
{ NULL, 0 }
};
};
static const lc_opt_enum_int_items_t fp_unit_items[] = {
- { "x87" , 0 },
- { "sse2", 1 },
- { NULL, 0 }
+ { "x87" , IA32_FPU_ARCH_X87 },
+ { "sse2", IA32_FPU_ARCH_SSE2 },
+ { "softfloat", IA32_FPU_ARCH_SOFTFLOAT },
+ { NULL, IA32_FPU_ARCH_NONE }
};
static lc_opt_enum_int_var_t fp_unit_var = {
- &use_sse2, fp_unit_items
+ &fpu_arch, fp_unit_items
};
static const lc_opt_table_entry_t ia32_architecture_options[] = {
- LC_OPT_ENT_BOOL("size", "optimize for size", &opt_size),
- LC_OPT_ENT_ENUM_INT("arch", "select the instruction architecture",
- &arch_var),
- LC_OPT_ENT_ENUM_INT("opt", "optimize for instruction architecture",
- &opt_arch_var),
- LC_OPT_ENT_ENUM_INT("fpunit", "select the floating point unit",
- &fp_unit_var),
- LC_OPT_ENT_NEGBIT("nooptcc", "do not optimize calling convention",
- &opt_cc, 1),
- LC_OPT_ENT_BIT("unsafe_floatconv", "do unsafe floating point controlword "
- "optimisations", &opt_unsafe_floatconv, 1),
+ LC_OPT_ENT_BOOL ("size", "optimize for size", &opt_size),
+ LC_OPT_ENT_ENUM_INT("arch", "select the instruction architecture", &arch_var),
+ LC_OPT_ENT_ENUM_INT("opt", "optimize for instruction architecture", &opt_arch_var),
+ LC_OPT_ENT_ENUM_INT("fpunit", "select the floating point unit", &fp_unit_var),
+ LC_OPT_ENT_NEGBOOL ("nooptcc", "do not optimize calling convention", &opt_cc),
+ LC_OPT_ENT_BOOL ("unsafe_floatconv", "do unsafe floating point controlword optimisations", &opt_unsafe_floatconv),
+ LC_OPT_ENT_BOOL ("machcode", "output machine code instead of assembler", &emit_machcode),
LC_OPT_LAST
};
}
/* Evaluate the costs of an instruction. */
-int ia32_evaluate_insn(insn_kind kind, tarval *tv) {
+int ia32_evaluate_insn(insn_kind kind, const ir_mode *mode, ir_tarval *tv)
+{
int cost;
switch (kind) {
case MUL:
- cost = arch_costs->cost_mul_start;
+ cost = arch_costs->cost_mul_start;
if (arch_costs->cost_mul_bit > 0) {
char *bitstr = get_tarval_bitpattern(tv);
int i;
}
free(bitstr);
}
- return cost;
+ if (get_mode_size_bits(mode) <= 32)
+ return cost;
+ /* 64bit mul supported, approx 4times of a 32bit mul*/
+ return 4 * cost;
case LEA:
- return arch_costs->lea_cost;
+ /* lea is only supported for 32 bit */
+ if (get_mode_size_bits(mode) <= 32)
+ return arch_costs->lea_cost;
+ /* in 64bit mode, the Lea cost are at wort 2 shifts and one add */
+ return 2 * arch_costs->add_cost + 2 * (2 * arch_costs->const_shf_cost);
case ADD:
case SUB:
- return arch_costs->add_cost;
+ if (get_mode_size_bits(mode) <= 32)
+ return arch_costs->add_cost;
+ /* 64bit add/sub supported, double the cost */
+ return 2 * arch_costs->add_cost;
case SHIFT:
- return arch_costs->const_shf_cost;
+ if (get_mode_size_bits(mode) <= 32)
+ return arch_costs->const_shf_cost;
+ /* 64bit shift supported, double the cost */
+ return 2 * arch_costs->const_shf_cost;
case ZERO:
return arch_costs->add_cost;
default:
}
}
+/* auto detection code only works if we're on an x86 cpu obviously */
+#ifdef NATIVE_X86
+typedef struct x86_cpu_info_t {
+ unsigned char cpu_stepping;
+ unsigned char cpu_model;
+ unsigned char cpu_family;
+ unsigned char cpu_type;
+ unsigned char cpu_ext_model;
+ unsigned char cpu_ext_family;
+ unsigned edx_features;
+ unsigned ecx_features;
+ unsigned add_features;
+} x86_cpu_info_t;
+
+enum {
+ CPUID_FEAT_ECX_SSE3 = 1 << 0,
+ CPUID_FEAT_ECX_PCLMUL = 1 << 1,
+ CPUID_FEAT_ECX_DTES64 = 1 << 2,
+ CPUID_FEAT_ECX_MONITOR = 1 << 3,
+ CPUID_FEAT_ECX_DS_CPL = 1 << 4,
+ CPUID_FEAT_ECX_VMX = 1 << 5,
+ CPUID_FEAT_ECX_SMX = 1 << 6,
+ CPUID_FEAT_ECX_EST = 1 << 7,
+ CPUID_FEAT_ECX_TM2 = 1 << 8,
+ CPUID_FEAT_ECX_SSSE3 = 1 << 9,
+ CPUID_FEAT_ECX_CID = 1 << 10,
+ CPUID_FEAT_ECX_FMA = 1 << 12,
+ CPUID_FEAT_ECX_CX16 = 1 << 13,
+ CPUID_FEAT_ECX_ETPRD = 1 << 14,
+ CPUID_FEAT_ECX_PDCM = 1 << 15,
+ CPUID_FEAT_ECX_DCA = 1 << 18,
+ CPUID_FEAT_ECX_SSE4_1 = 1 << 19,
+ CPUID_FEAT_ECX_SSE4_2 = 1 << 20,
+ CPUID_FEAT_ECX_x2APIC = 1 << 21,
+ CPUID_FEAT_ECX_MOVBE = 1 << 22,
+ CPUID_FEAT_ECX_POPCNT = 1 << 23,
+ CPUID_FEAT_ECX_AES = 1 << 25,
+ CPUID_FEAT_ECX_XSAVE = 1 << 26,
+ CPUID_FEAT_ECX_OSXSAVE = 1 << 27,
+ CPUID_FEAT_ECX_AVX = 1 << 28,
+
+ CPUID_FEAT_EDX_FPU = 1 << 0,
+ CPUID_FEAT_EDX_VME = 1 << 1,
+ CPUID_FEAT_EDX_DE = 1 << 2,
+ CPUID_FEAT_EDX_PSE = 1 << 3,
+ CPUID_FEAT_EDX_TSC = 1 << 4,
+ CPUID_FEAT_EDX_MSR = 1 << 5,
+ CPUID_FEAT_EDX_PAE = 1 << 6,
+ CPUID_FEAT_EDX_MCE = 1 << 7,
+ CPUID_FEAT_EDX_CX8 = 1 << 8,
+ CPUID_FEAT_EDX_APIC = 1 << 9,
+ CPUID_FEAT_EDX_SEP = 1 << 11,
+ CPUID_FEAT_EDX_MTRR = 1 << 12,
+ CPUID_FEAT_EDX_PGE = 1 << 13,
+ CPUID_FEAT_EDX_MCA = 1 << 14,
+ CPUID_FEAT_EDX_CMOV = 1 << 15,
+ CPUID_FEAT_EDX_PAT = 1 << 16,
+ CPUID_FEAT_EDX_PSE36 = 1 << 17,
+ CPUID_FEAT_EDX_PSN = 1 << 18,
+ CPUID_FEAT_EDX_CLF = 1 << 19,
+ CPUID_FEAT_EDX_DTES = 1 << 21,
+ CPUID_FEAT_EDX_ACPI = 1 << 22,
+ CPUID_FEAT_EDX_MMX = 1 << 23,
+ CPUID_FEAT_EDX_FXSR = 1 << 24,
+ CPUID_FEAT_EDX_SSE = 1 << 25,
+ CPUID_FEAT_EDX_SSE2 = 1 << 26,
+ CPUID_FEAT_EDX_SS = 1 << 27,
+ CPUID_FEAT_EDX_HTT = 1 << 28,
+ CPUID_FEAT_EDX_TM1 = 1 << 29,
+ CPUID_FEAT_EDX_IA64 = 1 << 30,
+ CPUID_FEAT_EDX_PBE = 1 << 31
+};
+
+static cpu_support auto_detect_Intel(x86_cpu_info_t const *info)
+{
+ cpu_support auto_arch = cpu_generic;
+
+ unsigned family = (info->cpu_ext_family << 4) | info->cpu_family;
+ unsigned model = (info->cpu_ext_model << 4) | info->cpu_model;
+
+ switch (family) {
+ case 4:
+ auto_arch = cpu_i486;
+ break;
+ case 5:
+ auto_arch = cpu_pentium;
+ break;
+ case 6:
+ switch (model) {
+ case 0x01: /* PentiumPro */
+ case 0x03: /* Pentium II Model 3 */
+ case 0x05: /* Pentium II Model 5 */
+ case 0x06: /* Celeron Model 6 */
+ case 0x07: /* Pentium III Model 7 */
+ case 0x08: /* Pentium III Model 8 */
+ case 0x09: /* Pentium M Model 9 */
+ case 0x0A: /* Pentium III Model 0A */
+ case 0x0B: /* Pentium III Model 0B */
+ case 0x0D: /* Pentium M Model 0D */
+ case 0x0E: /* Core Model 0E */
+ auto_arch = cpu_pentium_pro_generic;
+ break;
+ case 0x0F: /* Core2 Model 0F */
+ case 0x15: /* Intel EP80579 */
+ case 0x16: /* Celeron Model 16 */
+ case 0x17: /* Core2 Model 17 */
+ auto_arch = cpu_core2_generic;
+ break;
+ default:
+ /* unknown */
+ break;
+ }
+ break;
+ case 15:
+ switch (model) {
+ case 0x00: /* Pentium 4 Model 00 */
+ case 0x01: /* Pentium 4 Model 01 */
+ case 0x02: /* Pentium 4 Model 02 */
+ case 0x03: /* Pentium 4 Model 03 */
+ case 0x04: /* Pentium 4 Model 04 */
+ case 0x06: /* Pentium 4 Model 06 */
+ auto_arch = cpu_netburst_generic;
+ break;
+ case 0x1A: /* Core i7 */
+ auto_arch = cpu_core2_generic;
+ break;
+ case 0x1C: /* Atom */
+ auto_arch = cpu_atom_generic;
+ break;
+ case 0x1D: /* Xeon MP */
+ auto_arch = cpu_core2_generic;
+ break;
+ default:
+ /* unknown */
+ break;
+ }
+ break;
+ default:
+ /* unknown */
+ break;
+ }
+
+ return auto_arch;
+}
+
+static cpu_support auto_detect_AMD(x86_cpu_info_t const *info) {
+ cpu_support auto_arch = cpu_generic;
+
+ unsigned family, model;
+
+ if (info->cpu_family == 0x0F) {
+ family = (info->cpu_ext_family << 4) | info->cpu_family;
+ model = (info->cpu_ext_model << 4) | info->cpu_model;
+ } else {
+ family = info->cpu_family;
+ model = info->cpu_model;
+ }
+
+ switch (family) {
+ case 0x04:
+ auto_arch = cpu_i486;
+ break;
+ case 0x05:
+ switch (model) {
+ case 0x00: /* K5 Model 0 */
+ case 0x01: /* K5 Model 1 */
+ case 0x02: /* K5 Model 2 */
+ case 0x03: /* K5 Model 3 */
+ auto_arch = cpu_pentium;
+ break;
+ case 0x06: /* K6 Model 6 */
+ case 0x07: /* K6 Model 7 */
+ case 0x08: /* K6-2 Model 8 */
+ case 0x09: /* K6-III Model 9 */
+ case 0x0D: /* K6-2+ or K6-III+ */
+ auto_arch = cpu_k6_generic;
+ break;
+ case 0x0A: /* Geode LX */
+ auto_arch = cpu_geode_generic;
+ break;
+ default:
+ /* unknown K6 */
+ auto_arch = cpu_k6_generic;
+ break;
+ }
+ break;
+ case 0x06:
+ switch (model) {
+ case 0x01: /* Athlon Model 1 */
+ case 0x02: /* Athlon Model 2 */
+ case 0x03: /* Duron Model 3 */
+ case 0x04: /* Athlon Model 4 */
+ case 0x06: /* Athlon MP/Mobile Athlon Model 6 */
+ case 0x07: /* Mobile Duron Model 7 */
+ case 0x08: /* Athlon (TH/AP core) including Geode NX */
+ case 0x0A: /* Athlon (BT core) */
+ default: /* unknown K7 */
+ auto_arch = cpu_athlon_generic;
+ break;
+ }
+ break;
+ case 0x0F:
+ auto_arch = cpu_k8_generic;
+ break;
+ case 0x1F:
+ case 0x2F: /* AMD Family 11h */
+ auto_arch = cpu_k10_generic;
+ break;
+ default:
+ /* unknown */
+ break;
+ }
+
+ return auto_arch;
+}
+
+typedef union {
+ struct {
+ unsigned eax;
+ unsigned ebx;
+ unsigned ecx;
+ unsigned edx;
+ } r;
+ int bulk[4];
+} cpuid_registers;
+
+static void x86_cpuid(cpuid_registers *regs, unsigned level)
+{
+#if defined(__GNUC__)
+# if defined(__PIC__) && !defined(__amd64) // GCC cannot handle EBX in PIC
+ __asm (
+ "pushl %%ebx\n\t"
+ "cpuid\n\t"
+ "movl %%ebx, %1\n\t"
+ "popl %%ebx"
+ : "=a" (regs->r.eax), "=r" (regs->r.ebx), "=c" (regs->r.ecx), "=d" (regs->r.edx)
+ : "a" (level)
+ );
+# else
+ __asm ("cpuid\n\t"
+ : "=a" (regs->r.eax), "=b" (regs->r.ebx), "=c" (regs->r.ecx), "=d" (regs->r.edx)
+ : "a" (level)
+ );
+# endif
+#elif defined(_MSC_VER)
+ __cpuid(regs->bulk, level);
+#else
+# error CPUID is missing
+#endif
+}
+
+static int x86_toogle_cpuid(void)
+{
+ unsigned eflags_before = 0, eflags_after = 0;
+
+#if defined(__GNUC__)
+#ifdef __i386__
+ /* If bit 21 of the EFLAGS register can be changed, the cpuid instruction is available */
+ __asm__(
+ "pushf\n\t"
+ "popl %0\n\t"
+ "movl %0, %1\n\t"
+ "xorl $0x00200000, %1\n\t"
+ "pushl %1\n\t"
+ "popf\n\t"
+ "pushf\n\t"
+ "popl %1"
+ : "=r" (eflags_before), "=r" (eflags_after) :: "cc"
+ );
+#else
+ /* cpuid always available on 64bit */
+ return true;
+#endif
+#elif defined(_MSC_VER)
+#if defined(_M_IX86)
+ __asm {
+ pushfd
+ pop eax
+ mov eflags_before, eax
+ xor eax, 0x00200000
+ push eax
+ popfd
+ pushfd
+ pop eax
+ mov eflags_after, eax
+ }
+#else
+ return true;
+#endif
+#endif
+ return (eflags_before ^ eflags_after) & 0x00200000;
+}
+
+static void autodetect_arch(void)
+{
+ cpu_support auto_arch = cpu_generic;
+
+ /* We use the cpuid instruction to detect the CPU features */
+ if (x86_toogle_cpuid()) {
+ cpuid_registers regs;
+ char vendorid[13];
+ x86_cpu_info_t cpu_info;
+
+ /* get vendor ID */
+ x86_cpuid(®s, 0);
+ memcpy(&vendorid[0], ®s.r.ebx, 4);
+ memcpy(&vendorid[4], ®s.r.edx, 4);
+ memcpy(&vendorid[8], ®s.r.ecx, 4);
+ vendorid[12] = '\0';
+
+ /* get processor info and feature bits */
+ x86_cpuid(®s, 1);
+
+ cpu_info.cpu_stepping = (regs.r.eax >> 0) & 0x0F;
+ cpu_info.cpu_model = (regs.r.eax >> 4) & 0x0F;
+ cpu_info.cpu_family = (regs.r.eax >> 8) & 0x0F;
+ cpu_info.cpu_type = (regs.r.eax >> 12) & 0x03;
+ cpu_info.cpu_ext_model = (regs.r.eax >> 16) & 0x0F;
+ cpu_info.cpu_ext_family = (regs.r.eax >> 20) & 0xFF;
+ cpu_info.edx_features = regs.r.edx;
+ cpu_info.ecx_features = regs.r.ecx;
+ cpu_info.add_features = regs.r.ebx;
+
+ if (0 == strcmp(vendorid, "GenuineIntel")) {
+ auto_arch = auto_detect_Intel(&cpu_info);
+ } else if (0 == strcmp(vendorid, "AuthenticAMD")) {
+ auto_arch = auto_detect_AMD(&cpu_info);
+ } else if (0 == strcmp(vendorid, "Geode by NSC")) {
+ auto_arch = cpu_geode_generic;
+ }
+
+ if (cpu_info.edx_features & CPUID_FEAT_EDX_CMOV)
+ auto_arch |= arch_feature_cmov;
+ if (cpu_info.edx_features & CPUID_FEAT_EDX_MMX)
+ auto_arch |= arch_feature_mmx;
+ if (cpu_info.edx_features & CPUID_FEAT_EDX_SSE)
+ auto_arch |= arch_feature_sse1;
+ if (cpu_info.edx_features & CPUID_FEAT_EDX_SSE2)
+ auto_arch |= arch_feature_sse2;
+
+ if (cpu_info.ecx_features & CPUID_FEAT_ECX_SSE3)
+ auto_arch |= arch_feature_sse3;
+ if (cpu_info.ecx_features & CPUID_FEAT_ECX_SSSE3)
+ auto_arch |= arch_feature_ssse3;
+ if (cpu_info.ecx_features & CPUID_FEAT_ECX_SSE4_1)
+ auto_arch |= arch_feature_sse4_1;
+ if (cpu_info.ecx_features & CPUID_FEAT_ECX_SSE4_2)
+ auto_arch |= arch_feature_sse4_2;
+ if (cpu_info.ecx_features & CPUID_FEAT_ECX_POPCNT)
+ auto_arch |= arch_feature_popcnt;
+ }
+
+ arch = auto_arch;
+ opt_arch = auto_arch;
+}
+#endif /* NATIVE_X86 */
+
void ia32_setup_cg_config(void)
{
ia32_code_gen_config_t *const c = &ia32_cg_config;
set_arch_costs();
+#ifdef NATIVE_X86
+ if (arch == cpu_autodetect)
+ autodetect_arch();
+#endif
+
c->optimize_size = opt_size != 0;
- /* on newer intel cpus mov, pop is often faster then leave although it has a
+ /* on newer intel cpus mov, pop is often faster than leave although it has a
* longer opcode */
c->use_leave = FLAGS(opt_arch, arch_i386 | arch_all_amd | arch_core2) || opt_size;
/* P4s don't like inc/decs because they only partially write the flags
- register which produces false dependencies */
+ * register which produces false dependencies */
c->use_incdec = !FLAGS(opt_arch, arch_netburst | arch_nocona | arch_core2 | arch_geode) || opt_size;
- c->use_sse2 = use_sse2 && FLAGS(arch, arch_feature_sse2);
+ c->use_softfloat = FLAGS(fpu_arch, IA32_FPU_ARCH_SOFTFLOAT);
+ c->use_sse2 = FLAGS(fpu_arch, IA32_FPU_ARCH_SSE2) && FLAGS(arch, arch_feature_sse2);
c->use_ffreep = FLAGS(opt_arch, arch_athlon_plus);
c->use_ftst = !FLAGS(arch, arch_feature_p6_insn);
/* valgrind can't cope with femms yet and the usefulness of the optimization
c->use_femms = 0;
#endif
c->use_fucomi = FLAGS(arch, arch_feature_p6_insn);
- c->use_cmov = FLAGS(arch, arch_feature_p6_insn);
+ c->use_cmov = FLAGS(arch, arch_feature_cmov);
c->use_modeD_moves = FLAGS(opt_arch, arch_generic32 | arch_athlon_plus | arch_netburst | arch_nocona | arch_core2 | arch_ppro | arch_geode);
c->use_add_esp_4 = FLAGS(opt_arch, arch_generic32 | arch_athlon_plus | arch_netburst | arch_nocona | arch_core2 | arch_geode) && !opt_size;
c->use_add_esp_8 = FLAGS(opt_arch, arch_generic32 | arch_athlon_plus | arch_netburst | arch_nocona | arch_core2 | arch_ppro | arch_geode | arch_i386 | arch_i486) && !opt_size;
c->use_pxor = FLAGS(opt_arch, arch_netburst);
c->use_mov_0 = FLAGS(opt_arch, arch_k6) && !opt_size;
c->use_short_sex_eax = !FLAGS(opt_arch, arch_k6) && !opt_size;
- c->use_pad_return = FLAGS(opt_arch, arch_athlon_plus | arch_core2 | arch_generic32) && !opt_size;
+ c->use_pad_return = FLAGS(opt_arch, arch_athlon_plus) && !opt_size;
c->use_bt = FLAGS(opt_arch, arch_core2 | arch_athlon_plus) || opt_size;
c->use_fisttp = FLAGS(opt_arch & arch, arch_feature_sse3);
+ c->use_sse_prefetch = FLAGS(arch, (arch_feature_3DNowE | arch_feature_sse1));
+ c->use_3dnow_prefetch = FLAGS(arch, arch_feature_3DNow);
+ c->use_popcnt = FLAGS(arch, arch_feature_popcnt);
+ c->use_bswap = (arch & arch_mask) >= arch_i486;
c->optimize_cc = opt_cc;
c->use_unsafe_floatconv = opt_unsafe_floatconv;
+ c->emit_machcode = emit_machcode;
c->function_alignment = arch_costs->function_alignment;
c->label_alignment = arch_costs->label_alignment;
projects / libfirm / blobdiff