clang/test/Headers/cpuid.c

   1 // RUN: %clang_cc1 %s -ffreestanding -triple x86_64-apple-darwin -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-64
   2 // RUN: %clang_cc1 %s -ffreestanding -triple i386 -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-32
   3
   4 #include <cpuid.h>
   5 #include <cpuid.h> // Make sure multiple inclusion protection works.
   6
   7 // CHECK-64: {{.*}} call { i32, i32, i32, i32 } asm "  xchgq  %rbx,${1:q}\0A cpuid\0A xchgq %rbx,${1:q}", "={ax},=r,={cx},={dx},0,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}})
   8 // CHECK-64: {{.*}} call { i32, i32, i32, i32 } asm "  xchgq  %rbx,${1:q}\0A  cpuid\0A  xchgq  %rbx,${1:q}", "={ax},=r,={cx},={dx},0,2,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}}, i32 %{{[a-z0-9]+}})
   9
  10 // CHECK-32: {{.*}} call { i32, i32, i32, i32 } asm "cpuid", "={ax},={bx},={cx},={dx},0,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}})
  11 // CHECK-32: {{.*}} call { i32, i32, i32, i32 } asm "cpuid", "={ax},={bx},={cx},={dx},0,2,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}}, i32 %{{[a-z0-9]+}})
  12
  13 unsigned eax0, ebx0, ecx0, edx0;
  14 unsigned eax1, ebx1, ecx1, edx1;
  15
  16 void test_cpuid(unsigned level, unsigned count) {
  17   __cpuid(level, eax1, ebx1, ecx1, edx1);
  18   __cpuid_count(level, count, eax0, ebx0, ecx0, edx0);
  19 }