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| author | Kai Tietz <ktietz@redhat.com> | 2013-12-10 17:36:53 +0100 |
|---|---|---|
| committer | Kai Tietz <ktietz@gcc.gnu.org> | 2013-12-10 17:36:53 +0100 |
| commit | e7b4ce6414bba4fc55531553d0e05d1623f6448a (patch) | |
| tree | bf4dd2e4008a6c6d02a81f2986dbe0464720592e /gcc | |
| parent | bf2d1a652665a7637079de00bb13ba2c381221b0 (diff) | |
| download | gcc-e7b4ce6414bba4fc55531553d0e05d1623f6448a.zip gcc-e7b4ce6414bba4fc55531553d0e05d1623f6448a.tar.gz gcc-e7b4ce6414bba4fc55531553d0e05d1623f6448a.tar.bz2 | |
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: r205860
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 9 |
2 files changed, 12 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 969aec8..3ad6d1c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. + 2013-12-10 Richard Biener <rguenther@suse.de> PR middle-end/38474 diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 5a75bf9..cdd63e5 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -10946,18 +10946,21 @@ ix86_expand_prologue (void) } m->fs.sp_offset += allocate; + /* Use stack_pointer_rtx for relative addressing so that code + works for realigned stack, too. */ if (r10_live && eax_live) { - t = choose_baseaddr (m->fs.sp_offset - allocate); + t = plus_constant (Pmode, stack_pointer_rtx, allocate); emit_move_insn (gen_rtx_REG (word_mode, R10_REG), gen_frame_mem (word_mode, 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 (gen_rtx_REG (word_mode, AX_REG), gen_frame_mem (word_mode, 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 (gen_rtx_REG (word_mode, (eax_live ? AX_REG : R10_REG)), gen_frame_mem (word_mode, t)); |