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Prohibit swapping of operands when the first operand is constant

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Dmitry Stogov 2022-09-14 14:28:57 +03:00
parent 14ffff68dc
commit cdc34ae22b
1 changed files with 1 additions and 1 deletions
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ir_ra.c
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@ -906,7 +906,7 @@ static int ir_try_swap_operands(ir_ctx *ctx, ir_ref i, ir_insn *insn)
&& !ir_vregs_overlap(ctx, ctx->vregs[insn->op1], ctx->vregs[i])
&& !ir_hint_conflict(ctx, i, ctx->vregs[insn->op1], ctx->vregs[i])) {
/* pass */
} else if (insn->op2 > 0 && insn->op1 != insn->op2
} else if (insn->op1 > 0 && insn->op2 > 0 && insn->op1 != insn->op2
&& (ir_op_flags[insn->op] & IR_OP_FLAG_COMMUTATIVE)) {
if (ctx->vregs[insn->op2] != ctx->vregs[i]) {
ir_live_pos pos = IR_USE_LIVE_POS_FROM_REF(i);