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| author | Vladimir Makarov <vmakarov@redhat.com> | 2013-04-22 14:26:51 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2013-04-22 14:26:51 +0000 |
| commit | 88a581daa7f2c350e061b12db8ed24a0417a6058 (patch) | |
| tree | 972114b4e0989e2e816099da413dd707f4b716fd /gcc/lra-eliminations.c | |
| parent | 92be22dc7442dd9a62f5a33d41bc424b16570456 (diff) | |
| download | gcc-88a581daa7f2c350e061b12db8ed24a0417a6058.zip gcc-88a581daa7f2c350e061b12db8ed24a0417a6058.tar.gz gcc-88a581daa7f2c350e061b12db8ed24a0417a6058.tar.bz2 | |
re PR target/57018 (Miscompilation of bison 2.7.1 under "-Os -fomit-frame-pointer")
2013-04-22 Vladimir Makarov <vmakarov@redhat.com>
PR target/57018
* lra-eliminations.c (mark_not_eliminable): Prevent elimination of
a set sp if no stack realignment.
2013-04-22 Vladimir Makarov <vmakarov@redhat.com>
PR target/57018
* gcc.target/i386/pr57018.c: New test.
From-SVN: r198140
Diffstat (limited to 'gcc/lra-eliminations.c')
| -rw-r--r-- | gcc/lra-eliminations.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/lra-eliminations.c b/gcc/lra-eliminations.c index b8ec69f..27a5d75 100644 --- a/gcc/lra-eliminations.c +++ b/gcc/lra-eliminations.c @@ -716,7 +716,9 @@ mark_not_eliminable (rtx x) ep++) if (ep->to_rtx == SET_DEST (x) && SET_DEST (x) != hard_frame_pointer_rtx - && (GET_CODE (SET_SRC (x)) != PLUS + && (! (SUPPORTS_STACK_ALIGNMENT && stack_realign_fp + && REGNO (ep->to_rtx) == STACK_POINTER_REGNUM) + || GET_CODE (SET_SRC (x)) != PLUS || XEXP (SET_SRC (x), 0) != SET_DEST (x) || ! CONST_INT_P (XEXP (SET_SRC (x), 1)))) setup_can_eliminate (ep, false); |