ir/aarch64: emit cbz/cbnz instead of cmp + b.ne

henderkes · henderkes · commit 6399e7d87367 · 2026-07-10T20:17:48.000+07:00
diff --git a/ext/opcache/jit/ir/ir_aarch64.dasc b/ext/opcache/jit/ir/ir_aarch64.dasc
@@ -3469,8 +3469,7 @@ static void ir_emit_if_int(ir_ctx *ctx, uint32_t b, ir_ref def, ir_insn *insn, u
 		op2_reg = IR_REG_NUM(op2_reg);
 		ir_emit_load(ctx, type, op2_reg, insn->op2);
 	}
-	|	ASM_REG_IMM_OP cmp, type, op2_reg, 0
-	ir_emit_jcc(ctx, b, def, insn, next_block, IR_NE, 1);
+	ir_emit_jz(ctx, b, next_block, IR_NE, type, op2_reg);
 }
 
 static void ir_emit_cond(ir_ctx *ctx, ir_ref def, ir_insn *insn)

Original file line number	Diff line number	Diff line change
`@@ -3469,8 +3469,7 @@ static void ir_emit_if_int(ir_ctx ctx, uint32_t b, ir_ref def, ir_insn insn, u`
`3469`	`3469`	`op2_reg = IR_REG_NUM(op2_reg);`
`3470`	`3470`	`ir_emit_load(ctx, type, op2_reg, insn->op2);`
`3471`	`3471`	`}`
`3472`		`- \| ASM_REG_IMM_OP cmp, type, op2_reg, 0`
`3473`		`- ir_emit_jcc(ctx, b, def, insn, next_block, IR_NE, 1);`
	`3472`	`+ ir_emit_jz(ctx, b, next_block, IR_NE, type, op2_reg);`
`3474`	`3473`	`}`
`3475`	`3474`
`3476`	`3475`	`static void ir_emit_cond(ir_ctx ctx, ir_ref def, ir_insn insn)`