diff options
| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.target/i386/avx-os-support.h | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/avx-os-support.h')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/i386/avx-os-support.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/avx-os-support.h b/gcc-4.9/gcc/testsuite/gcc.target/i386/avx-os-support.h new file mode 100644 index 000000000..fb1ce7562 --- /dev/null +++ b/gcc-4.9/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); +} |