Hi!
LRA likes to use CTR and LR to store CCmode values. Not such a good
idea. All other similar patterns disparage using CTR and LR; do so
here, too.
Committing to trunk.
Segher
2016-09-27 Segher Boessenkool <seg...@kernel.crashing.org>
* config/rs6000/rs6000.md (movcc_internal1): Disparage using CTR or LR.
---
gcc/config/rs6000/rs6000.md | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 7b995ac..a9fabc1 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -6653,8 +6653,10 @@ (define_expand "movcc"
"")
(define_insn "*movcc_internal1"
- [(set (match_operand:CC 0 "nonimmediate_operand"
"=y,x,?y,y,r,r,r,r,r,cl,r,m")
- (match_operand:CC 1 "general_operand" "y,r,r,O,x,y,r,I,h,r,m,r"))]
+ [(set (match_operand:CC 0 "nonimmediate_operand"
+ "=y,x,?y,y,r,r,r,r,r,*c*l,r,m")
+ (match_operand:CC 1 "general_operand"
+ " y,r, r,O,x,y,r,I,h, r,m,r"))]
"register_operand (operands[0], CCmode)
|| register_operand (operands[1], CCmode)"
"@
--
1.9.3
