[04/29,arm] Rewrite addsi3_carryin_shift_<optab> in canonical form
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Message ID 20191018194900.34795-5-Richard.Earnshaw@arm.com
State New
Headers show
Series
  • Rewrite DImode arithmetic support
Related show

Commit Message

Richard Earnshaw (lists) Oct. 18, 2019, 7:48 p.m. UTC
The add-with-carry operation which involves a shift doesn't match at present
because it isn't matching the canonical form generated by combine.  Fixing
this is simply a matter of re-ordering the operands.

	* config/arm/arm.md (addsi3_carryin_shift_<optab>): Reorder operands
	to match canonical form.
---
 gcc/config/arm/arm.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch
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diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 4a7a64e6613..9754a761faf 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -913,8 +913,8 @@  (define_insn "*addsi3_carryin_shift_<optab>"
 		  (match_operator:SI 2 "shift_operator"
 		    [(match_operand:SI 3 "s_register_operand" "r")
 		     (match_operand:SI 4 "reg_or_int_operand" "rM")])
-		  (match_operand:SI 1 "s_register_operand" "r"))
-		 (LTUGEU:SI (reg:<cnb> CC_REGNUM) (const_int 0))))]
+		  (LTUGEU:SI (reg:<cnb> CC_REGNUM) (const_int 0)))
+		 (match_operand:SI 1 "s_register_operand" "r")))]
   "TARGET_32BIT"
   "adc%?\\t%0, %1, %3%S2"
   [(set_attr "conds" "use")