diff options
Diffstat (limited to 'glibc-2.16-detect-fma.patch')
| -rw-r--r-- | glibc-2.16-detect-fma.patch | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/glibc-2.16-detect-fma.patch b/glibc-2.16-detect-fma.patch new file mode 100644 index 000000000000..daffb976871a --- /dev/null +++ b/glibc-2.16-detect-fma.patch @@ -0,0 +1,72 @@ +diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c +index fb44dcf..fed5ab8 100644 +--- a/sysdeps/x86_64/multiarch/init-arch.c ++++ b/sysdeps/x86_64/multiarch/init-arch.c +@@ -156,6 +156,9 @@ __init_cpu_features (void) + /* Determine if AVX is usable. */ + if (CPUID_AVX) + __cpu_features.feature[index_AVX_Usable] |= bit_AVX_Usable; ++ /* Determine if FMA is usable. */ ++ if (CPUID_FMA) ++ __cpu_features.feature[index_FMA_Usable] |= bit_FMA_Usable; + /* Determine if FMA4 is usable. */ + if (CPUID_FMA4) + __cpu_features.feature[index_FMA4_Usable] |= bit_FMA4_Usable; +diff --git a/sysdeps/x86_64/multiarch/init-arch.h b/sysdeps/x86_64/multiarch/init-arch.h +index 45e2651..f33f1c8 100644 +--- a/sysdeps/x86_64/multiarch/init-arch.h ++++ b/sysdeps/x86_64/multiarch/init-arch.h +@@ -22,7 +22,8 @@ + #define bit_Fast_Unaligned_Load (1 << 4) + #define bit_Prefer_PMINUB_for_stringop (1 << 5) + #define bit_AVX_Usable (1 << 6) +-#define bit_FMA4_Usable (1 << 7) ++#define bit_FMA_Usable (1 << 7) ++#define bit_FMA4_Usable (1 << 8) + + /* CPUID Feature flags. */ + #define bit_SSE2 (1 << 26) +@@ -56,6 +57,7 @@ + # define index_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE + # define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1*FEATURE_SIZE + # define index_AVX_Usable FEATURE_INDEX_1*FEATURE_SIZE ++# define index_FMA_Usable FEATURE_INDEX_1*FEATURE_SIZE + # define index_FMA4_Usable FEATURE_INDEX_1*FEATURE_SIZE + + #else /* __ASSEMBLER__ */ +@@ -131,6 +133,8 @@ extern const struct cpu_features *__get_cpu_features (void) + HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_OSXSAVE) + # define CPUID_AVX \ + HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_AVX) ++# define CPUID_FMA \ ++ HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_FMA) + # define CPUID_FMA4 \ + HAS_CPUID_FLAG (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4) + +@@ -140,7 +144,6 @@ extern const struct cpu_features *__get_cpu_features (void) + # define HAS_SSSE3 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSSE3) + # define HAS_SSE4_1 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_1) + # define HAS_SSE4_2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_2) +-# define HAS_FMA HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_FMA) + + # define index_Fast_Rep_String FEATURE_INDEX_1 + # define index_Fast_Copy_Backward FEATURE_INDEX_1 +@@ -148,6 +151,7 @@ extern const struct cpu_features *__get_cpu_features (void) + # define index_Prefer_SSE_for_memop FEATURE_INDEX_1 + # define index_Fast_Unaligned_Load FEATURE_INDEX_1 + # define index_AVX_Usable FEATURE_INDEX_1 ++# define index_FMA_Usable FEATURE_INDEX_1 + # define index_FMA4_Usable FEATURE_INDEX_1 + + # define HAS_ARCH_FEATURE(name) \ +@@ -159,6 +163,7 @@ extern const struct cpu_features *__get_cpu_features (void) + # define HAS_PREFER_SSE_FOR_MEMOP HAS_ARCH_FEATURE (Prefer_SSE_for_memop) + # define HAS_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (Fast_Unaligned_Load) + # define HAS_AVX HAS_ARCH_FEATURE (AVX_Usable) ++# define HAS_FMA HAS_ARCH_FEATURE (FMA_Usable) + # define HAS_FMA4 HAS_ARCH_FEATURE (FMA4_Usable) + + #endif /* __ASSEMBLER__ */ +-- +1.7.3.4 + |