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| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-11-13 00:41:53 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-11-13 00:41:53 +0000 |
| commit | 1d75ed51ec4624426a8e519df6a5258b0aa13919 (patch) | |
| tree | 7188af743013997d2c1de69de33b6cec208746a6 /gcc/ifcvt.c | |
| parent | 10a18dc56246410a8d7669e2774e947b68dc717f (diff) | |
| download | gcc-1d75ed51ec4624426a8e519df6a5258b0aa13919.tar.gz | |
2006-11-12 Michael Matz <matz@suse.de>
Roger Sayle <roger@eyesopen.com>
PR rtl-optimization/29797
* ifcvt.c (noce_try_bitop): Correct calculation of bitnum on
BITS_BIG_ENDIAN targets.
* gcc.c-torture/execute/pr29797-1.c: New test case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118740 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index 4d7341cec88..f2226c402aa 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -1943,7 +1943,9 @@ noce_try_bitop (struct noce_if_info *if_info) return FALSE; bitnum = INTVAL (XEXP (cond, 2)); mode = GET_MODE (x); - if (bitnum >= HOST_BITS_PER_WIDE_INT) + if (BITS_BIG_ENDIAN) + bitnum = GET_MODE_BITSIZE (mode) - 1 - bitnum; + if (bitnum < 0 || bitnum >= HOST_BITS_PER_WIDE_INT) return FALSE; } else |