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re PR target/56807 (mingw32: Conflict between stack realignment and stack probe destroys function argument in EAX) 

PR target/56807
        * config/i386/i386.c (ix86_expand_prologue): Address saved
        registers stack-relative, not via frame-pointer.

From-SVN: r205864
This commit is contained in:
Kai Tietz 2013-12-10 17:52:23 +01:00 committed by Kai Tietz
parent 342b1f78b0
commit 6ce027dc6d
2 changed files with 10 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2013-12-10 Kai Tietz <ktietz@redhat.com>
PR target/56807
* config/i386/i386.c (ix86_expand_prologue): Address saved
registers stack-relative, not via frame-pointer.
2013-12-03 Marek Polacek <polacek@redhat.com>
Backport from mainline

7
gcc/config/i386/i386.c
View File

@ -10431,14 +10431,15 @@ ix86_expand_prologue (void)
if (r10_live && eax_live)
{
t = choose_baseaddr (m->fs.sp_offset - allocate);
t = plus_constant (Pmode, stack_pointer_rtx, allocate);
emit_move_insn (r10, gen_frame_mem (Pmode, t));
t = choose_baseaddr (m->fs.sp_offset - allocate - UNITS_PER_WORD);
t = plus_constant (Pmode, stack_pointer_rtx,
allocate - UNITS_PER_WORD);
emit_move_insn (eax, gen_frame_mem (Pmode, t));
}
else if (eax_live || r10_live)
{
t = choose_baseaddr (m->fs.sp_offset - allocate);
t = plus_constant (Pmode, stack_pointer_rtx, allocate);
emit_move_insn ((eax_live ? eax : r10), gen_frame_mem (Pmode, t));
}
}