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i386.c (ix86_can_use_return_insn_p): Check for padding0, too. 

2009-09-09  Kai Tietz  <kai.tietz@onevision.com>

        PR/41315
        * config/i386.c (ix86_can_use_return_insn_p): Check for
        padding0, too.
        (ix86_expand_prologue): Take frame.padding0 into logic of
        to_allocate checks.
        (ix86_expand_epilogue): Likewise.

From-SVN: r151569
This commit is contained in:
Kai Tietz 2009-09-09 19:00:16 +00:00 committed by Kai Tietz
parent 6d4992f02f
commit b6e4cc41bc
2 changed files with 20 additions and 8 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2009-09-09 Kai Tietz <kai.tietz@onevision.com>
PR/41315
* config/i386.c (ix86_can_use_return_insn_p): Check for
padding0, too.
(ix86_expand_prologue): Take frame.padding0 into logic of
to_allocate checks.
(ix86_expand_epilogue): Likewise.
2009-09-07 Uros Bizjak <ubizjak@gmail.com>
Backport from mainline:

19
gcc/config/i386/i386.c
View File

@ -7340,7 +7340,8 @@ ix86_can_use_return_insn_p (void)
return 0;
ix86_compute_frame_layout (&frame);
return frame.to_allocate == 0 && (frame.nregs + frame.nsseregs) == 0;
return frame.to_allocate == 0 && frame.padding0 == 0
&& (frame.nregs + frame.nsseregs) == 0;
}
/* Value should be nonzero if functions must have frame pointers.
@ -8328,7 +8329,7 @@ ix86_expand_prologue (void)
&& (! TARGET_STACK_PROBE || allocate < CHECK_STACK_LIMIT)))
{
if (!frame_pointer_needed
|| !frame.to_allocate
|| !(frame.to_allocate + frame.padding0)
|| crtl->stack_realign_needed)
ix86_emit_save_regs_using_mov (stack_pointer_rtx,
frame.to_allocate
@ -8338,7 +8339,7 @@ ix86_expand_prologue (void)
-frame.nregs * UNITS_PER_WORD);
}
if (!frame_pointer_needed
|| !frame.to_allocate
|| !(frame.to_allocate + frame.padding0)
|| crtl->stack_realign_needed)
ix86_emit_save_sse_regs_using_mov (stack_pointer_rtx,
frame.to_allocate);
@ -8524,8 +8525,10 @@ ix86_expand_epilogue (int style)
if ((!sp_valid && (frame.nregs + frame.nsseregs) <= 1)
|| (TARGET_EPILOGUE_USING_MOVE
&& cfun->machine->use_fast_prologue_epilogue
&& ((frame.nregs + frame.nsseregs) > 1 || frame.to_allocate))
|| (frame_pointer_needed && !(frame.nregs + frame.nsseregs) && frame.to_allocate)
&& ((frame.nregs + frame.nsseregs) > 1
|| (frame.to_allocate + frame.padding0) != 0))
|| (frame_pointer_needed && !(frame.nregs + frame.nsseregs)
&& (frame.to_allocate + frame.padding0) != 0)
|| (frame_pointer_needed && TARGET_USE_LEAVE
&& cfun->machine->use_fast_prologue_epilogue
&& (frame.nregs + frame.nsseregs) == 1)
@ -8535,13 +8538,13 @@ ix86_expand_epilogue (int style)
locations. If both are available, default to ebp, since offsets
are known to be small. Only exception is esp pointing directly
to the end of block of saved registers, where we may simplify
addressing mode.
addressing mode.
If we are realigning stack with bp and sp, regs restore can't
be addressed by bp. sp must be used instead. */
if (!frame_pointer_needed
|| (sp_valid && !frame.to_allocate)
|| (sp_valid && !(frame.to_allocate + frame.padding0) != 0)
|| stack_realign_fp)
{
ix86_emit_restore_sse_regs_using_mov (stack_pointer_rtx,
@ -8633,7 +8636,7 @@ ix86_expand_epilogue (int style)
GEN_INT (frame.nsseregs * 16 +
frame.padding0), style);
}
else if (frame.to_allocate || frame.nsseregs)
else if (frame.to_allocate || frame.padding0 || frame.nsseregs)
{
ix86_emit_restore_sse_regs_using_mov (stack_pointer_rtx,
frame.to_allocate,