diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/avx-os-support.h')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/avx-os-support.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/testsuite/gcc.target/i386/avx-os-support.h b/gcc/testsuite/gcc.target/i386/avx-os-support.h index 21d332f7d3..fb1ce7562d 100644 --- a/gcc/testsuite/gcc.target/i386/avx-os-support.h +++ b/gcc/testsuite/gcc.target/i386/avx-os-support.h @@ -1,10 +1,18 @@ /* Check if the OS supports executing AVX instructions. */ +#define XCR_XFEATURE_ENABLED_MASK 0x0 + +#define XSTATE_FP 0x1 +#define XSTATE_SSE 0x2 +#define XSTATE_YMM 0x4 + static int avx_os_support (void) { unsigned int eax, edx; + unsigned int ecx = XCR_XFEATURE_ENABLED_MASK; + + __asm__ ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (ecx)); - __asm__ ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0)); - return (eax & 6) == 6; + return (eax & (XSTATE_SSE | XSTATE_YMM)) == (XSTATE_SSE | XSTATE_YMM); } |