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i386.c (ix86_expand_prologue): Emit frame info for the special register pushes before frame probing and allocation. 

* config/i386/i386.c (ix86_expand_prologue): Emit frame info for the
	special register pushes before frame probing and allocation.

From-SVN: r193044
This commit is contained in:
Eric Botcazou 2012-10-31 20:10:26 +00:00 committed by Eric Botcazou
parent 03d31730bf
commit 2455de3809
2 changed files with 25 additions and 8 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2012-10-31 Eric Botcazou <ebotcazou@adacore.com>
* config/i386/i386.c (ix86_expand_prologue): Emit frame info for the
special register pushes before frame probing and allocation.
2012-10-31 Vladimir Makarov <vmakarov@redhat.com> 2012-10-31 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/55150 PR middle-end/55150

28
gcc/config/i386/i386.c
View File

@ -10699,7 +10699,7 @@ ix86_expand_prologue (void)
rtx eax = gen_rtx_REG (Pmode, AX_REG); rtx eax = gen_rtx_REG (Pmode, AX_REG);
rtx r10 = NULL; rtx r10 = NULL;
rtx (*adjust_stack_insn)(rtx, rtx, rtx); rtx (*adjust_stack_insn)(rtx, rtx, rtx);
const bool sp_is_cfa_reg = (m->fs.cfa_reg == stack_pointer_rtx);
bool eax_live = false; bool eax_live = false;
bool r10_live = false; bool r10_live = false;
@ -10708,16 +10708,31 @@ ix86_expand_prologue (void)
if (!TARGET_64BIT_MS_ABI) if (!TARGET_64BIT_MS_ABI)
eax_live = ix86_eax_live_at_start_p (); eax_live = ix86_eax_live_at_start_p ();
/* Note that SEH directives need to continue tracking the stack
pointer even after the frame pointer has been set up. */
if (eax_live) if (eax_live)
{ {
emit_insn (gen_push (eax)); insn = emit_insn (gen_push (eax));
allocate -= UNITS_PER_WORD; allocate -= UNITS_PER_WORD;
if (sp_is_cfa_reg || TARGET_SEH)
{
if (sp_is_cfa_reg)
m->fs.cfa_offset += UNITS_PER_WORD;
RTX_FRAME_RELATED_P (insn) = 1;
} }
}
if (r10_live) if (r10_live)
{ {
r10 = gen_rtx_REG (Pmode, R10_REG); r10 = gen_rtx_REG (Pmode, R10_REG);
emit_insn (gen_push (r10)); insn = emit_insn (gen_push (r10));
allocate -= UNITS_PER_WORD; allocate -= UNITS_PER_WORD;
if (sp_is_cfa_reg || TARGET_SEH)
{
if (sp_is_cfa_reg)
m->fs.cfa_offset += UNITS_PER_WORD;
RTX_FRAME_RELATED_P (insn) = 1;
}
} }
emit_move_insn (eax, GEN_INT (allocate)); emit_move_insn (eax, GEN_INT (allocate));
@ -10731,13 +10746,10 @@ ix86_expand_prologue (void)
insn = emit_insn (adjust_stack_insn (stack_pointer_rtx, insn = emit_insn (adjust_stack_insn (stack_pointer_rtx,
stack_pointer_rtx, eax)); stack_pointer_rtx, eax));
/* Note that SEH directives need to continue tracking the stack if (sp_is_cfa_reg || TARGET_SEH)
pointer even after the frame pointer has been set up. */
if (m->fs.cfa_reg == stack_pointer_rtx || TARGET_SEH)
{ {
if (m->fs.cfa_reg == stack_pointer_rtx) if (sp_is_cfa_reg)
m->fs.cfa_offset += allocate; m->fs.cfa_offset += allocate;
RTX_FRAME_RELATED_P (insn) = 1; RTX_FRAME_RELATED_P (insn) = 1;
add_reg_note (insn, REG_FRAME_RELATED_EXPR, add_reg_note (insn, REG_FRAME_RELATED_EXPR,
gen_rtx_SET (VOIDmode, stack_pointer_rtx, gen_rtx_SET (VOIDmode, stack_pointer_rtx,