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-rw-r--r--gcc/combine.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c
index 484d6871a85..97ec1821989 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -7216,7 +7216,10 @@ if_then_else_cond (x, ptrue, pfalse)
&& 0 != (cond0 = if_then_else_cond (SUBREG_REG (x),
&true0, &false0)))
{
- if (GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))) > UNITS_PER_WORD
+ if ((GET_CODE (SUBREG_REG (x)) == REG
+ || GET_CODE (SUBREG_REG (x)) == MEM
+ || CONSTANT_P (SUBREG_REG (x)))
+ && GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))) > UNITS_PER_WORD
&& (WORDS_BIG_ENDIAN || SUBREG_WORD (x) != 0))
{
true0 = operand_subword (true0, SUBREG_WORD (x), 0, mode);