https://gcc.gnu.org/g:2e5130f6870bdb016f58f42f2ff99a2226e93af6
commit r16-1032-g2e5130f6870bdb016f58f42f2ff99a2226e93af6
Author: Takayuki 'January June' Suwa <jjsuwa_sys3...@yahoo.co.jp>
Date: Tue May 27 15:58:35 2025 +0900
xtensa: Remove an unnecessary constraint modifier from movsf_internal insn
pattern
In this case, there is no need to consider reloading when memory is the
destination. On the other hand, when memory is the source, reloading
read from constant pool becomes double indirection and should obviously
be avoided.
gcc/ChangeLog:
* config/xtensa/xtensa.md (movsf_internal):
Remove destination side constraint modifier '^' in the third
alternative.
Diff:
---
gcc/config/xtensa/xtensa.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
index 88f011cd0ef6..c7ac456ae5f3 100644
--- a/gcc/config/xtensa/xtensa.md
+++ b/gcc/config/xtensa/xtensa.md
@@ -1453,7 +1453,7 @@
})
(define_insn "movsf_internal"
- [(set (match_operand:SF 0 "nonimmed_operand" "=f,f,^U,D,a,D,R,a,f,a,a,W,a,U")
+ [(set (match_operand:SF 0 "nonimmed_operand" "=f,f,U,D,a,D,R,a,f,a,a,W,a,U")
(match_operand:SF 1 "move_operand" "f,^U,f,d,T,R,d,r,r,f,Y,iF,U,r"))]
"((register_operand (operands[0], SFmode)
|| register_operand (operands[1], SFmode))
