pin prolog/epilog nodes

diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index 502c659..3d6973a 100644 (file)
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -301,6 +301,7 @@ static const arch_register_t *ia32_abi_prologue(void *self, ir_node **mem, pmap
                arch_irn_add_flags(push, arch_irn_flags_prolog);
                curr_sp = new_r_Proj(push, get_irn_mode(curr_sp), pn_ia32_Push_stack);
                *mem    = new_r_Proj(push, mode_M, pn_ia32_Push_M);
+               set_irn_pinned(push, op_pin_state_pinned);
 
                /* the push must have SP out register */
                arch_set_irn_register(curr_sp, arch_env->sp);
@@ -313,6 +314,7 @@ static const arch_register_t *ia32_abi_prologue(void *self, ir_node **mem, pmap
                arch_irn_add_flags(curr_bp, arch_irn_flags_prolog);
                be_set_constr_single_reg_out(curr_bp, 0, arch_env->bp,
                                             arch_register_req_type_ignore);
+               set_irn_pinned(curr_bp, op_pin_state_pinned);
 
                /* beware: the copy must be done before any other sp use */
                curr_sp = be_new_CopyKeep_single(arch_env->sp->reg_class, bl, curr_sp, curr_bp, get_irn_mode(curr_sp));
@@ -350,6 +352,7 @@ static void ia32_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_
                /* simply remove the stack frame here */
                curr_sp = be_new_IncSP(arch_env->sp, bl, curr_sp, BE_STACK_FRAME_SIZE_SHRINK, 0);
                arch_irn_add_flags(curr_sp, arch_irn_flags_epilog);
+               set_irn_pinned(curr_sp, op_pin_state_pinned);
        } else {
                ir_mode *mode_bp = arch_env->bp->reg_class->mode;
 
@@ -361,6 +364,7 @@ static void ia32_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_
                        curr_bp = new_r_Proj(leave, mode_bp, pn_ia32_Leave_frame);
                        curr_sp = new_r_Proj(leave, get_irn_mode(curr_sp), pn_ia32_Leave_stack);
                        arch_irn_add_flags(leave, arch_irn_flags_epilog);
+                       set_irn_pinned(leave, op_pin_state_pinned);
                } else {
                        ir_node *pop;
 
@@ -370,12 +374,14 @@ static void ia32_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_
                        be_set_constr_single_reg_out(curr_sp, 0, arch_env->sp,
                                                         arch_register_req_type_ignore);
                        arch_irn_add_flags(curr_sp, arch_irn_flags_epilog);
+                       set_irn_pinned(curr_sp, op_pin_state_pinned);
 
                        /* pop ebp */
                        pop     = new_bd_ia32_PopEbp(NULL, bl, *mem, curr_sp);
                        curr_bp = new_r_Proj(pop, mode_bp, pn_ia32_Pop_res);
                        curr_sp = new_r_Proj(pop, get_irn_mode(curr_sp), pn_ia32_Pop_stack);
                        arch_irn_add_flags(pop, arch_irn_flags_epilog);
+                       set_irn_pinned(pop, op_pin_state_pinned);
 
                        *mem = new_r_Proj(pop, mode_M, pn_ia32_Pop_M);
                }

diff --git a/ir/be/ia32/ia32_spec.pl b/ir/be/ia32/ia32_spec.pl
index e85f85b..df05ff2 100644 (file)
--- a/ir/be/ia32/ia32_spec.pl
+++ b/ir/be/ia32/ia32_spec.pl
@@ -1344,6 +1344,7 @@ Leave => {
        outs      => [ "frame", "stack" ],
        latency   => 3,
        units     => [ "GP" ],
+       state     => "exc_pinned",
 },
 
 AddSP => {