From 4b754091befe7e805f4daafa19ca6828fdda134b Mon Sep 17 00:00:00 2001 From: Uros Bizjak Date: Sun, 12 Nov 2023 18:18:19 +0100 Subject: [PATCH] i386: Remove *stack_protect_set_4s__di alternative that will never match The relevant peephole2 will never generate alternative (=m,=&a,0,m) because operand 1 is not dead before the peephole2 pattern. gcc/ChangeLog: * config/i386/i386.md (*stack_protect_set_4s__di): Remove alternative 0. --- gcc/config/i386/i386.md | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 01fc6ecc3518..ffd9f2d03814 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -24481,19 +24481,16 @@ (set_attr "length" "24")]) (define_insn "*stack_protect_set_4s__di" - [(set (match_operand:PTR 0 "memory_operand" "=m,m") - (unspec:PTR [(match_operand:PTR 3 "memory_operand" "m,m")] + [(set (match_operand:PTR 0 "memory_operand" "=m") + (unspec:PTR [(match_operand:PTR 3 "memory_operand" "m")] UNSPEC_SP_SET)) - (set (match_operand:DI 1 "register_operand" "=&a,&r") - (sign_extend:DI (match_operand:SI 2 "nonimmediate_operand" "0,rm")))] + (set (match_operand:DI 1 "register_operand" "=&r") + (sign_extend:DI (match_operand:SI 2 "nonimmediate_operand" "rm")))] "TARGET_64BIT && reload_completed" { output_asm_insn ("mov{}\t{%3, %1|%1, %3}", operands); output_asm_insn ("mov{}\t{%1, %0|%0, %1}", operands); - if (which_alternative) - return "movs{lq|x}\t{%2, %1|%1, %2}"; - else - return "{cltq|cdqe}"; + return "movs{lq|x}\t{%2, %1|%1, %2}"; } [(set_attr "type" "multi") (set_attr "length" "24")]) -- 2.47.2