This will be tested by the ACLE patches, but it's really an
independent improvement.
Tested on aarch64-linux-gnu (with and without SVE) and aarch64_be-elf.
Applied as r274510.
Richard
2019-08-15 Richard Sandiford <richard.sandif...@arm.com>
gcc/
* config/aarch64/aarch64-sve.md (aarch64_<su>abd<mode>_3): Add
a commutativity marker.
Index: gcc/config/aarch64/aarch64-sve.md
===================================================================
--- gcc/config/aarch64/aarch64-sve.md 2019-08-15 09:22:03.043558190 +0100
+++ gcc/config/aarch64/aarch64-sve.md 2019-08-15 09:25:18.602113663 +0100
@@ -2060,7 +2060,7 @@ (define_insn "aarch64_<su>abd<mode>_3"
[(match_operand:<VPRED> 1 "register_operand" "Upl, Upl")
(minus:SVE_I
(USMAX:SVE_I
- (match_operand:SVE_I 2 "register_operand" "0, w")
+ (match_operand:SVE_I 2 "register_operand" "%0, w")
(match_operand:SVE_I 3 "register_operand" "w, w"))
(<max_opp>:SVE_I
(match_dup 2)
