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authorDavid Edelsohn <edelsohn@gnu.org>2001-07-13 15:05:51 +0000
committerDavid Edelsohn <dje@gcc.gnu.org>2001-07-13 11:05:51 -0400
commit1568d79b849057c16e3e4796b4c2b4335bb3a4ca (patch)
tree2c0b31c8ae90c95f18c468c4542d5d93e70a5a09 /gcc/combine.c
parent8e1ab0fe1de986e393db8b5912bfea27d0f6ab09 (diff)
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* combine.c (try_combine): Ensure const_int pow2 is positive.
From-SVN: r43983
Diffstat (limited to 'gcc/combine.c')
-rw-r--r--gcc/combine.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c
index 6972d85..2557d75 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -2235,6 +2235,7 @@ try_combine (i3, i2, i1, new_direct_jump_p)
appeared to be a memory address. This is a kludge. */
if (split_code == MULT
&& GET_CODE (XEXP (*split, 1)) == CONST_INT
+ && INTVAL (XEXP (*split, 1)) > 0
&& (i = exact_log2 (INTVAL (XEXP (*split, 1)))) >= 0)
{
SUBST (*split, gen_rtx_ASHIFT (split_mode,