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-rw-r--r--gcc/expmed.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c
index ae5ad0a..5e8d7f3 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -3075,7 +3075,8 @@ expand_mult (enum machine_mode mode, rtx op0, rtx op1, rtx target,
{
/* If we are multiplying in DImode, it may still be a win
to try to work with shifts and adds. */
- if (CONST_DOUBLE_HIGH (op1) == 0)
+ if (CONST_DOUBLE_HIGH (op1) == 0
+ && CONST_DOUBLE_LOW (op1) > 0)
coeff = CONST_DOUBLE_LOW (op1);
else if (CONST_DOUBLE_LOW (op1) == 0
&& EXACT_POWER_OF_2_OR_ZERO_P (CONST_DOUBLE_HIGH (op1)))