[PATCH v2] hash: provide crc32 functions based on intrinsics

[Tyler Retzlaff]

MSVC does not support inline asm so replace crc32 inline function
implementations with intrinsics compatible with all toolchains.

Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
---
 lib/hash/rte_crc_x86.h | 38 +++++++++++++-------------------------
 1 file changed, 13 insertions(+), 25 deletions(-)

diff --git a/lib/hash/rte_crc_x86.h b/lib/hash/rte_crc_x86.h
index 3b865e2..eadfe42 100644
--- a/lib/hash/rte_crc_x86.h
+++ b/lib/hash/rte_crc_x86.h
@@ -5,35 +5,33 @@
 #ifndef _RTE_CRC_X86_H_
 #define _RTE_CRC_X86_H_
 
+#include <rte_vect.h>
+
 static inline uint32_t
 crc32c_sse42_u8(uint8_t data, uint32_t init_val)
 {
-	__asm__ volatile(
-			"crc32b %[data], %[init_val];"
-			: [init_val] "+r" (init_val)
-			: [data] "rm" (data));
-	return init_val;
+	return _mm_crc32_u8(init_val, data);
 }
 
 static inline uint32_t
 crc32c_sse42_u16(uint16_t data, uint32_t init_val)
 {
-	__asm__ volatile(
-			"crc32w %[data], %[init_val];"
-			: [init_val] "+r" (init_val)
-			: [data] "rm" (data));
-	return init_val;
+	return _mm_crc32_u16(init_val, data);
 }
 
 static inline uint32_t
 crc32c_sse42_u32(uint32_t data, uint32_t init_val)
 {
-	__asm__ volatile(
-			"crc32l %[data], %[init_val];"
-			: [init_val] "+r" (init_val)
-			: [data] "rm" (data));
-	return init_val;
+	return _mm_crc32_u32(init_val, data);
+}
+
+#ifdef RTE_ARCH_X86_64
+static inline uint32_t
+crc32c_sse42_u64(uint64_t data, uint64_t init_val)
+{
+	return _mm_crc32_u64(init_val, data);
 }
+#endif
 
 static inline uint32_t
 crc32c_sse42_u64_mimic(uint64_t data, uint64_t init_val)
@@ -49,16 +47,6 @@
 	return (uint32_t)init_val;
 }
 
-static inline uint32_t
-crc32c_sse42_u64(uint64_t data, uint64_t init_val)
-{
-	__asm__ volatile(
-			"crc32q %[data], %[init_val];"
-			: [init_val] "+r" (init_val)
-			: [data] "rm" (data));
-	return (uint32_t)init_val;
-}
-
 /*
  * Use single crc32 instruction to perform a hash on a byte value.
  * Fall back to software crc32 implementation in case SSE4.2 is
-- 
1.8.3.1