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Set UNALIGNED_ACCESS_IS_FAST on powerpc64

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All 64bit PowerPC CPUs handle unaligned accesses reasonably fast, so
set UNALIGNED_ACCESS_IS_FAST.

Decompression of the snappy html test case is almost 50% faster on
POWER9 with this patch applied.
This commit is contained in:
Anton Blanchard 2018-05-13 07:48:40 +10:00
parent 9a327aae41
commit 9205845a16
1 changed files with 1 additions and 1 deletions
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2
common/compiler_gcc.h
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@ -123,7 +123,7 @@
# define bswap64 __builtin_bswap64 # define bswap64 __builtin_bswap64
#endif #endif
#if defined(__x86_64__) || defined(__i386__) || defined(__ARM_FEATURE_UNALIGNED) #if defined(__x86_64__) || defined(__i386__) || defined(__ARM_FEATURE_UNALIGNED) || defined(__powerpc64__)
# define UNALIGNED_ACCESS_IS_FAST 1 # define UNALIGNED_ACCESS_IS_FAST 1
#endif #endif