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/* { dg-do compile { target x86_64-*-* } } */
/* { dg-require-effective-target lp64 } */
#include "analyzer-decls.h"
#include <stdint.h>
int test_1 (int src)
{
int dst;
asm ("mov %1, %0\n\t"
"add $1, %0"
: "=r" (dst)
: "r" (src));
return dst;
}
uint32_t test_2 (uint32_t Mask)
{
uint32_t Index;
asm ("bsfl %[aMask], %[aIndex]"
: [aIndex] "=r" (Index)
: [aMask] "r" (Mask)
: "cc");
return Index;
}
int test_3a (int p1, int p2)
{
asm goto ("btl %1, %0\n\t"
"jc %l2"
: // No outputs
: "r" (p1), "r" (p2)
: "cc"
: carry);
return 0;
carry:
return 1;
}
int test_3b (int p1, int p2)
{
asm goto ("btl %1, %0\n\t"
"jc %l[carry]"
: // No outputs
: "r" (p1), "r" (p2)
: "cc"
: carry);
return 0;
carry:
return 1;
}
uint64_t test_4 (void)
{
uint64_t start_time, end_time;
// Get start time
asm volatile ("rdtsc\n\t" // Returns the time in EDX:EAX.
"shl $32, %%rdx\n\t" // Shift the upper bits left.
"or %%rdx, %0" // 'Or' in the lower bits.
: "=a" (start_time)
:
: "rdx");
// could do other work here
// Get end time
asm volatile ("rdtsc\n\t" // Returns the time in EDX:EAX.
"shl $32, %%rdx\n\t" // Shift the upper bits left.
"or %%rdx, %0" // 'Or' in the lower bits.
: "=a" (end_time)
:
: "rdx");
__analyzer_eval (start_time == end_time); /* { dg-warning "UNKNOWN" } */
// Get elapsed time
return end_time - start_time;
}
static uint64_t get_time (void)
{
uint64_t result;
asm volatile ("rdtsc\n\t" // Returns the time in EDX:EAX.
"shl $32, %%rdx\n\t" // Shift the upper bits left.
"or %%rdx, %0" // 'Or' in the lower bits.
: "=a" (result)
:
: "rdx");
return result;
}
uint64_t test_4a (void)
{
uint64_t start_time, end_time;
start_time = get_time ();
// could do other work here
end_time = get_time ();
__analyzer_eval (start_time == end_time); /* { dg-warning "UNKNOWN" } */
// Get elapsed time
return end_time - start_time;
}
asm ("\t.pushsection .text\n"
"\t.globl add_asm\n"
"\t.type add_asm, @function\n"
"add_asm:\n"
"\tmovq %rdi, %rax\n"
"\tadd %rsi, %rax\n"
"\tret\n"
"\t.popsection\n");
int test_5 (int count)
{
asm goto ("dec %0; jb %l[stop]"
: "+r" (count)
:
:
: stop);
return count;
stop:
return 0;
}
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