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This patch adds detection of availability for AVX512F and AVX512DQ ISAs.

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* sysdeps/x86_64/multiarch/init-arch.h (bit_AVX512F_Usable,
    bit_AVX512DQ_Usable, bit_Opmask_state, bit_ZMM0_15_state,
    bit_ZMM16_31_state): New macro.
    * sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
    Check and set bit_AVX512F_Usable, bit_AVX512DQ_Usable.
This commit is contained in:
Andrew Senkevich 2015-06-08 14:07:59 +03:00
parent 3ac3ff325d
commit 5fe2a126d1
3 changed files with 42 additions and 0 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2015-06-08 Andrew Senkevich <andrew.senkevich@intel.com>
* sysdeps/x86_64/multiarch/init-arch.h (bit_AVX512F_Usable,
bit_AVX512DQ_Usable, bit_Opmask_state, bit_ZMM0_15_state,
bit_ZMM16_31_state): New macro.
* sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
Check and set bit_AVX512F_Usable, bit_AVX512DQ_Usable.
2015-06-08 Joseph Myers <joseph@codesourcery.com>
* include/stdio.h (__open_memstream): Say "C++ tests" in comment.

17
sysdeps/x86_64/multiarch/init-arch.c
View File

@ -179,6 +179,23 @@ __init_cpu_features (void)
if (CPUID_AVX2)
__cpu_features.feature[index_AVX2_Usable]
|= bit_AVX2_Usable | bit_AVX_Fast_Unaligned_Load;
/* Check if OPMASK state, upper 256-bit of ZMM0-ZMM15 and
ZMM16-ZMM31 state are enabled. */
if ((xcrlow & (bit_Opmask_state | bit_ZMM0_15_state
| bit_ZMM16_31_state)) ==
(bit_Opmask_state | bit_ZMM0_15_state | bit_ZMM16_31_state))
{
/* Determine if AVX512F is usable. */
if (CPUID_AVX512F)
{
__cpu_features.feature[index_AVX512F_Usable]
|= bit_AVX512F_Usable;
/* Determine if AVX512DQ is usable. */
if (CPUID_AVX512DQ)
__cpu_features.feature[index_AVX512DQ_Usable]
|= bit_AVX512DQ_Usable;
}
}
/* Determine if FMA is usable. */
if (CPUID_FMA)
__cpu_features.feature[index_FMA_Usable] |= bit_FMA_Usable;

17
sysdeps/x86_64/multiarch/init-arch.h
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@ -26,6 +26,8 @@
#define bit_Slow_SSE4_2 (1 << 9)
#define bit_AVX2_Usable (1 << 10)
#define bit_AVX_Fast_Unaligned_Load (1 << 11)
#define bit_AVX512F_Usable (1 << 12)
#define bit_AVX512DQ_Usable (1 << 13)
/* CPUID Feature flags. */
@ -43,10 +45,15 @@
/* COMMON_CPUID_INDEX_7. */
#define bit_RTM (1 << 11)
#define bit_AVX2 (1 << 5)
#define bit_AVX512F (1 << 16)
#define bit_AVX512DQ (1 << 17)
/* XCR0 Feature flags. */
#define bit_XMM_state (1 << 1)
#define bit_YMM_state (2 << 1)
#define bit_Opmask_state (1 << 5)
#define bit_ZMM0_15_state (1 << 6)
#define bit_ZMM16_31_state (1 << 7)
/* The integer bit array index for the first set of internal feature bits. */
# define FEATURE_INDEX_1 0
@ -76,6 +83,8 @@
# define index_Slow_SSE4_2 FEATURE_INDEX_1*FEATURE_SIZE
# define index_AVX2_Usable FEATURE_INDEX_1*FEATURE_SIZE
# define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE
# define index_AVX512F_Usable FEATURE_INDEX_1*FEATURE_SIZE
# define index_AVX512DQ_Usable FEATURE_INDEX_1*FEATURE_SIZE
#else /* __ASSEMBLER__ */
@ -152,6 +161,10 @@ extern const struct cpu_features *__get_cpu_features (void)
HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_RTM)
# define CPUID_AVX2 \
HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_AVX2)
# define CPUID_AVX512F \
HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_AVX512F)
# define CPUID_AVX512DQ \
HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_AVX512DQ)
/* HAS_* evaluates to true if we may use the feature at runtime. */
# define HAS_SSE2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, bit_SSE2)
@ -172,6 +185,8 @@ extern const struct cpu_features *__get_cpu_features (void)
# define index_Slow_SSE4_2 FEATURE_INDEX_1
# define index_AVX2_Usable FEATURE_INDEX_1
# define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1
# define index_AVX512F_Usable FEATURE_INDEX_1
# define index_AVX512DQ_Usable FEATURE_INDEX_1
# define HAS_ARCH_FEATURE(name) \
((__get_cpu_features ()->feature[index_##name] & (bit_##name)) != 0)
@ -182,6 +197,8 @@ extern const struct cpu_features *__get_cpu_features (void)
# define HAS_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (Fast_Unaligned_Load)
# define HAS_AVX HAS_ARCH_FEATURE (AVX_Usable)
# define HAS_AVX2 HAS_ARCH_FEATURE (AVX2_Usable)
# define HAS_AVX512F HAS_ARCH_FEATURE (AVX512F_Usable)
# define HAS_AVX512DQ HAS_ARCH_FEATURE (AVX512DQ_Usable)
# define HAS_FMA HAS_ARCH_FEATURE (FMA_Usable)
# define HAS_FMA4 HAS_ARCH_FEATURE (FMA4_Usable)
# define HAS_AVX_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load)