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_<mode>_di):
Remove alternative 0.
Bootstrapped and regression tested on x86_64-pc-linux-gnu {,-m32}.
Uros.
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 01fc6ecc351..ffd9f2d0381 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -24481,19 +24481,16 @@ (define_insn "*stack_protect_set_4z_<mode>_di"
(set_attr "length" "24")])
(define_insn "*stack_protect_set_4s_<mode>_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{<imodesuffix>}\t{%3, %<k>1|%<k>1, %3}", operands);
output_asm_insn ("mov{<imodesuffix>}\t{%<k>1, %0|%0, %<k>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")])
