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/* { dg-do compile } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-std=gnu99 -O2" } */
/* { dg-final { scan-assembler "salq\[ \\t\]+\\\$8, %rbx" } } */
#include <stdint.h>
register uint64_t global_flag_stack __asm__("rbx");
void push_flag_into_global_reg_var(uint64_t a, uint64_t b) {
uint64_t flag = (a==b);
global_flag_stack <<= 8;
global_flag_stack |= flag;
}
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