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| author | Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp> | 2022-05-29 19:44:32 +0900 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2022-06-09 15:07:08 -0700 |
| commit | 2fcc69d8ce4eddf6dea878a5383254d366e1bb14 (patch) | |
| tree | 048f9813c17e714554202ce7140616c43caee545 | |
| parent | 645848634526c52aa641e57173597728d096aeef (diff) | |
| download | gcc-2fcc69d8ce4eddf6dea878a5383254d366e1bb14.zip gcc-2fcc69d8ce4eddf6dea878a5383254d366e1bb14.tar.gz gcc-2fcc69d8ce4eddf6dea878a5383254d366e1bb14.tar.bz2 | |
xtensa: Implement bswaphi2 insn pattern
This patch adds bswaphi2 insn pattern that is one instruction less than the
default expansion.
gcc/ChangeLog:
* config/xtensa/xtensa.md (bswaphi2): New insn pattern.
| -rw-r--r-- | gcc/config/xtensa/xtensa.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md index 8a11903..abf4ad1 100644 --- a/gcc/config/xtensa/xtensa.md +++ b/gcc/config/xtensa/xtensa.md @@ -471,6 +471,16 @@ ;; Byte swap. +(define_insn "bswaphi2" + [(set (match_operand:HI 0 "register_operand" "=a") + (bswap:HI (match_operand:HI 1 "register_operand" "r"))) + (clobber (match_scratch:HI 2 "=&a"))] + "" + "extui\t%2, %1, 8, 8\;slli\t%0, %1, 8\;or\t%0, %0, %2" + [(set_attr "type" "arith") + (set_attr "mode" "HI") + (set_attr "length" "9")]) + (define_expand "bswapsi2" [(set (match_operand:SI 0 "register_operand" "") (bswap:SI (match_operand:SI 1 "register_operand" "")))] |