addsi3_carryin_alt2 has a more strict constraint than the predicate
when adding a constant. This leads to sub-optimal code in some
circumstances.
* config/arm/arm.md (addsi3_carryin_alt2): Use arm_not_operand for
operand 2.
---
gcc/config/arm/arm.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 9754a761faf..fbe154a9873 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -893,7 +893,7 @@ (define_insn "*addsi3_carryin_alt2_<optab>"
[(set (match_operand:SI 0 "s_register_operand" "=l,r,r")
(plus:SI (plus:SI (LTUGEU:SI (reg:<cnb> CC_REGNUM) (const_int 0))
(match_operand:SI 1 "s_register_operand" "%l,r,r"))
- (match_operand:SI 2 "arm_rhs_operand" "l,rI,K")))]
+ (match_operand:SI 2 "arm_not_operand" "l,rI,K")))]
"TARGET_32BIT"
"@
adc%?\\t%0, %1, %2
