| Message ID | bf7f5873-6959-9ca5-5a2f-83499ac78034@yahoo.co.jp |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] xtensa: Tune "*btrue" insn pattern | expand |
On Wed, Jan 11, 2023 at 8:26 PM Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp> wrote: > > This patch saves one byte when the Code Density Option is enabled, > > gcc/ChangeLog: > > * config/xtensa/xtensa.md (ctzsi2, ffssi2): > Rearrange the emitting codes. > --- > gcc/config/xtensa/xtensa.md | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) Regtested for target=xtensa-linux-uclibc, no new regressions. Committed to master.
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md index b4989832169..764da63f91c 100644 --- a/gcc/config/xtensa/xtensa.md +++ b/gcc/config/xtensa/xtensa.md @@ -477,8 +477,8 @@ emit_insn (gen_negsi2 (temp, operands[1])); emit_insn (gen_andsi3 (temp, temp, operands[1])); emit_insn (gen_clzsi2 (temp, temp)); - emit_insn (gen_negsi2 (temp, temp)); - emit_insn (gen_addsi3 (operands[0], temp, GEN_INT (31))); + emit_move_insn (operands[0], GEN_INT (31)); + emit_insn (gen_subsi3 (operands[0], operands[0], temp)); DONE; }) @@ -491,8 +491,8 @@ emit_insn (gen_negsi2 (temp, operands[1])); emit_insn (gen_andsi3 (temp, temp, operands[1])); emit_insn (gen_clzsi2 (temp, temp)); - emit_insn (gen_negsi2 (temp, temp)); - emit_insn (gen_addsi3 (operands[0], temp, GEN_INT (32))); + emit_move_insn (operands[0], GEN_INT (32)); + emit_insn (gen_subsi3 (operands[0], operands[0], temp)); DONE; })