From 070d651c6db37c3658be0a5274f44265045428e6 Mon Sep 17 00:00:00 2001 From: Christophe Lyon Date: Wed, 31 May 2023 09:23:16 +0000 Subject: aarch64: Add pattern for bswap + rotate [PR 110039] After commit g:d8545fb2c71683f407bfd96706103297d4d6e27b, we missed a pattern to match the new GIMPLE form. With this patch, gcc.target/aarch64/rev16_2.c passes again. 2023-05-31 Christophe Lyon PR target/110039 gcc/ * config/aarch64/aarch64.md (aarch64_rev16si2_alt3): New pattern. --- gcc/config/aarch64/aarch64.md | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'gcc') diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md index f26d11c..c2ba726 100644 --- a/gcc/config/aarch64/aarch64.md +++ b/gcc/config/aarch64/aarch64.md @@ -6249,6 +6249,16 @@ [(set_attr "type" "rev")] ) +;; Similar pattern to match (rotate (bswap) 16) +(define_insn "aarch64_rev16si2_alt3" + [(set (match_operand:SI 0 "register_operand" "=r") + (rotate:SI (bswap:SI (match_operand:SI 1 "register_operand" "r")) + (const_int 16)))] + "" + "rev16\\t%w0, %w1" + [(set_attr "type" "rev")] +) + ;; zero_extend version of above (define_insn "*bswapsi2_uxtw" [(set (match_operand:DI 0 "register_operand" "=r") -- cgit v1.1