/* This test checks if the __builtin_cpu_is and __builtin_cpu_supports calls
- are recognized. */
+ are recognized. It also independently uses CPUID to get cpu type and
+ features supported and checks if the builtins correctly identify the
+ platform. The code to do the identification is adapted from
+ libgcc/config/i386/cpuinfo.c. */
/* { dg-do run } */
#include <assert.h>
+#include "cpuid.h"
-int
-fn1 ()
+enum vendor_signatures
+{
+ SIG_INTEL = 0x756e6547 /* Genu */,
+ SIG_AMD = 0x68747541 /* Auth */
+};
+
+/* Check if the Intel CPU model and sub-model are identified. */
+static void
+check_intel_cpu_model (unsigned int family, unsigned int model,
+ unsigned int brand_id)
+{
+ /* Parse family and model only if brand ID is 0. */
+ if (brand_id == 0)
+ {
+ switch (family)
+ {
+ case 0x5:
+ /* Pentium. */
+ break;
+ case 0x6:
+ switch (model)
+ {
+ case 0x1c:
+ case 0x26:
+ /* Atom. */
+ assert (__builtin_cpu_is ("atom"));
+ break;
+ case 0x1a:
+ case 0x1e:
+ case 0x1f:
+ case 0x2e:
+ /* Nehalem. */
+ assert (__builtin_cpu_is ("corei7"));
+ assert (__builtin_cpu_is ("nehalem"));
+ break;
+ case 0x25:
+ case 0x2c:
+ case 0x2f:
+ /* Westmere. */
+ assert (__builtin_cpu_is ("corei7"));
+ assert (__builtin_cpu_is ("westmere"));
+ break;
+ case 0x2a:
+ /* Sandy Bridge. */
+ assert (__builtin_cpu_is ("corei7"));
+ assert (__builtin_cpu_is ("sandybridge"));
+ break;
+ case 0x17:
+ case 0x1d:
+ /* Penryn. */
+ case 0x0f:
+ /* Merom. */
+ assert (__builtin_cpu_is ("core2"));
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ /* We have no idea. */
+ break;
+ }
+ }
+}
+
+/* Check if the AMD CPU model and sub-model are identified. */
+static void
+check_amd_cpu_model (unsigned int family, unsigned int model)
+{
+ switch (family)
+ {
+ /* AMD Family 10h. */
+ case 0x10:
+ switch (model)
+ {
+ case 0x2:
+ /* Barcelona. */
+ assert (__builtin_cpu_is ("amdfam10h"));
+ assert (__builtin_cpu_is ("barcelona"));
+ break;
+ case 0x4:
+ /* Shanghai. */
+ assert (__builtin_cpu_is ("amdfam10h"));
+ assert (__builtin_cpu_is ("shanghai"));
+ break;
+ case 0x8:
+ /* Istanbul. */
+ assert (__builtin_cpu_is ("amdfam10h"));
+ assert (__builtin_cpu_is ("istanbul"));
+ break;
+ default:
+ break;
+ }
+ break;
+ /* AMD Family 15h. */
+ case 0x15:
+ assert (__builtin_cpu_is ("amdfam15h"));
+ /* Bulldozer version 1. */
+ if ( model <= 0xf)
+ assert (__builtin_cpu_is ("bdver1"));
+ /* Bulldozer version 2. */
+ if (model >= 0x10 && model <= 0x1f)
+ assert (__builtin_cpu_is ("bdver2"));
+ break;
+ default:
+ break;
+ }
+}
+
+/* Check if the ISA features are identified. */
+static void
+check_features (unsigned int ecx, unsigned int edx,
+ int max_cpuid_level)
+{
+ if (edx & bit_CMOV)
+ assert (__builtin_cpu_supports ("cmov"));
+ if (edx & bit_MMX)
+ assert (__builtin_cpu_supports ("mmx"));
+ if (edx & bit_SSE)
+ assert (__builtin_cpu_supports ("sse"));
+ if (edx & bit_SSE2)
+ assert (__builtin_cpu_supports ("sse2"));
+ if (ecx & bit_POPCNT)
+ assert (__builtin_cpu_supports ("popcnt"));
+ if (ecx & bit_SSE3)
+ assert (__builtin_cpu_supports ("sse3"));
+ if (ecx & bit_SSSE3)
+ assert (__builtin_cpu_supports ("ssse3"));
+ if (ecx & bit_SSE4_1)
+ assert (__builtin_cpu_supports ("sse4.1"));
+ if (ecx & bit_SSE4_2)
+ assert (__builtin_cpu_supports ("sse4.2"));
+ if (ecx & bit_AVX)
+ assert (__builtin_cpu_supports ("avx"));
+
+ /* Get advanced features at level 7 (eax = 7, ecx = 0). */
+ if (max_cpuid_level >= 7)
+ {
+ unsigned int eax, ebx, ecx, edx;
+ __cpuid_count (7, 0, eax, ebx, ecx, edx);
+ if (ebx & bit_AVX2)
+ assert (__builtin_cpu_supports ("avx2"));
+ }
+}
+
+static int __attribute__ ((noinline))
+__get_cpuid_output (unsigned int __level,
+ unsigned int *__eax, unsigned int *__ebx,
+ unsigned int *__ecx, unsigned int *__edx)
+{
+ return __get_cpuid (__level, __eax, __ebx, __ecx, __edx);
+}
+
+static int
+check_detailed ()
+{
+ unsigned int eax, ebx, ecx, edx;
+
+ int max_level;
+ unsigned int vendor;
+ unsigned int model, family, brand_id;
+ unsigned int extended_model, extended_family;
+
+ /* Assume cpuid insn present. Run in level 0 to get vendor id. */
+ if (!__get_cpuid_output (0, &eax, &ebx, &ecx, &edx))
+ return 0;
+
+ vendor = ebx;
+ max_level = eax;
+
+ if (max_level < 1)
+ return 0;
+
+ if (!__get_cpuid_output (1, &eax, &ebx, &ecx, &edx))
+ return 0;
+
+ model = (eax >> 4) & 0x0f;
+ family = (eax >> 8) & 0x0f;
+ brand_id = ebx & 0xff;
+ extended_model = (eax >> 12) & 0xf0;
+ extended_family = (eax >> 20) & 0xff;
+
+ if (vendor == SIG_INTEL)
+ {
+ assert (__builtin_cpu_is ("intel"));
+ /* Adjust family and model for Intel CPUs. */
+ if (family == 0x0f)
+ {
+ family += extended_family;
+ model += extended_model;
+ }
+ else if (family == 0x06)
+ model += extended_model;
+ check_intel_cpu_model (family, model, brand_id);
+ check_features (ecx, edx, max_level);
+ }
+ else if (vendor == SIG_AMD)
+ {
+ assert (__builtin_cpu_is ("amd"));
+ /* Adjust model and family for AMD CPUS. */
+ if (family == 0x0f)
+ {
+ family += extended_family;
+ model += (extended_model << 4);
+ }
+ check_amd_cpu_model (family, model);
+ check_features (ecx, edx, max_level);
+ }
+
+ return 0;
+}
+
+static int
+quick_check ()
{
/* Check CPU Features. */
assert (__builtin_cpu_supports ("cmov") >= 0);
int main ()
{
__builtin_cpu_init ();
- return fn1 ();
+ quick_check ();
+ check_detailed ();
+ return 0;
}
projects / gcc.git / commitdiff