From 1d75ed51ec4624426a8e519df6a5258b0aa13919 Mon Sep 17 00:00:00 2001 From: sayle Date: Mon, 13 Nov 2006 00:41:53 +0000 Subject: 2006-11-12 Michael Matz Roger Sayle 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 --- gcc/ifcvt.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'gcc/ifcvt.c') 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 -- cgit v1.2.1