From: Die Li Date: Sat, 3 Jun 2023 17:02:09 +0000 (-0600) Subject: Remove unnecessary md pattern for TARGET_XTHEADCONDMOV X-Git-Tag: basepoints/gcc-15~8617 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1d2493f5912c340b50f49e4c2d928870faa172b;p=thirdparty%2Fgcc.git Remove unnecessary md pattern for TARGET_XTHEADCONDMOV There are 2 small changes in this patch, but they do not affect the result. 1. Remove unnecessary md pattern for TARGET_XTHEADCONDMOV in thead.md. The operands[4] in "if_then_else" are always comparison operations, so the generated rtl does not match the pattern that is expected to be deleted. 2. Change operands[4] from const0_rtx to operands[1] to maintain rtl consistency. Although when output assembly, only operands[4] CODE will affect the output result. Signed-off-by: Die Li gcc/ChangeLog: * config/riscv/thead.md (*th_cond_gpr_mov): Delete. --- diff --git a/gcc/config/riscv/thead.md b/gcc/config/riscv/thead.md index 0623607d3dc5..ea377872bde0 100644 --- a/gcc/config/riscv/thead.md +++ b/gcc/config/riscv/thead.md @@ -120,25 +120,12 @@ /* Invert the condition and take else-block. */ rtx_code code = GET_CODE (operands[4]); code = (code == EQ) ? NE : EQ; - operands[4] = gen_rtx_fmt_ee (code, VOIDmode, const0_rtx, const0_rtx); + operands[4] = gen_rtx_fmt_ee (code, VOIDmode, operands[1], const0_rtx); return "th.mv%C4z\t%0,%z3,%1"; } [(set_attr "type" "condmove") (set_attr "mode" "")]) -(define_insn "*th_cond_gpr_mov" - [(set (match_operand:GPR 0 "register_operand" "=r,r") - (if_then_else:GPR - (match_operand:GPR2 1 "register_operand" "r,r") - (match_operand:GPR 2 "reg_or_0_operand" "rJ,0") - (match_operand:GPR 3 "reg_or_0_operand" "0,rJ")))] - "TARGET_XTHEADCONDMOV" - "@ - th.mvnez\t%0,%z2,%1 - th.mveqz\t%0,%z3,%1" - [(set_attr "type" "condmove") - (set_attr "mode" "")]) - ;; XTheadFmv ;; In RV32, we lack fmv.x.d and fmv.d.x, but XTheadFmv has instructions