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[bmi2] Add lzcnt and bmi target attributes

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* When dynamic dispatching to bmi2 add lzcnt and bmi to the
  TARGET_ATTRIBUTE.
* Centralize the bmi2 TARGET_ATTRIBUTE definition to
  BMI2_TARGET_ATTRIBUTE so we can change it in the future.
* Only enable bmi2 when both bmi1 & bmi2 are supported. There shouldn't
  be any cases where bmi2 is supported but bmi1 isn't. But, since we are
  using the instruction we should check bmi1 as well.
This commit is contained in:
Nick Terrell
2021-11-30 17:54:56 -08:00
parent 7847c2fd68
commit 5414dd7978
10 changed files with 31 additions and 17 deletions
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lib/decompress/huf_decompress.c
+4 -4
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@@ -68,7 +68,7 @@
#endif
#if HUF_ENABLE_ASM_X86_64_BMI2 && DYNAMIC_BMI2
# define HUF_ASM_X86_64_BMI2_ATTRS TARGET_ATTRIBUTE("bmi2")
# define HUF_ASM_X86_64_BMI2_ATTRS BMI2_TARGET_ATTRIBUTE
#else
# define HUF_ASM_X86_64_BMI2_ATTRS
#endif
@@ -120,7 +120,7 @@
return fn##_body(dst, dstSize, cSrc, cSrcSize, DTable); \
} \
\
static TARGET_ATTRIBUTE("bmi2") size_t fn##_bmi2( \
static BMI2_TARGET_ATTRIBUTE size_t fn##_bmi2( \
void* dst, size_t dstSize, \
const void* cSrc, size_t cSrcSize, \
const HUF_DTable* DTable) \
@@ -670,7 +670,7 @@ HUF_decompress4X1_usingDTable_internal_body(
}
#if HUF_NEED_BMI2_FUNCTION
static TARGET_ATTRIBUTE("bmi2")
static BMI2_TARGET_ATTRIBUTE
size_t HUF_decompress4X1_usingDTable_internal_bmi2(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable) {
return HUF_decompress4X1_usingDTable_internal_body(dst, dstSize, cSrc, cSrcSize, DTable);
@@ -1386,7 +1386,7 @@ HUF_decompress4X2_usingDTable_internal_body(
}
#if HUF_NEED_BMI2_FUNCTION
static TARGET_ATTRIBUTE("bmi2")
static BMI2_TARGET_ATTRIBUTE
size_t HUF_decompress4X2_usingDTable_internal_bmi2(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable) {
return HUF_decompress4X2_usingDTable_internal_body(dst, dstSize, cSrc, cSrcSize, DTable);