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| author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
| commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
| tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/gcc/testsuite/gcc.target/i386/avx-os-support.h | |
| parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
| download | toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.gz toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.bz2 toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.zip | |
[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/gcc/testsuite/gcc.target/i386/avx-os-support.h')
| -rw-r--r-- | gcc-4.8/gcc/testsuite/gcc.target/i386/avx-os-support.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/testsuite/gcc.target/i386/avx-os-support.h b/gcc-4.8/gcc/testsuite/gcc.target/i386/avx-os-support.h new file mode 100644 index 000000000..fb1ce7562 --- /dev/null +++ b/gcc-4.8/gcc/testsuite/gcc.target/i386/avx-os-support.h @@ -0,0 +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)); + + return (eax & (XSTATE_SSE | XSTATE_YMM)) == (XSTATE_SSE | XSTATE_YMM); +} |