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memset replacement: unroll vectorised loops.

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git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15848
This commit is contained in:
Julian Seward 2016-04-04 12:33:35 +00:00
parent af74da9d2b
commit 32d0fc4be5
1 changed files with 10 additions and 0 deletions
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10
shared/vg_replace_strmem.c
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@ -1200,6 +1200,11 @@ static inline void my_exit ( int x )
c8 = (c8 << 32) | c8; \
while ((a & 7) != 0 && n >= 1) \
{ *(UChar*)a = (UChar)c; a += 1; n -= 1; } \
while (n >= 32) \
{ *(ULong*)a = c8; a += 8; n -= 8; \
*(ULong*)a = c8; a += 8; n -= 8; \
*(ULong*)a = c8; a += 8; n -= 8; \
*(ULong*)a = c8; a += 8; n -= 8; } \
while (n >= 8) \
{ *(ULong*)a = c8; a += 8; n -= 8; } \
while (n >= 1) \
@ -1212,6 +1217,11 @@ static inline void my_exit ( int x )
c4 = (c4 << 16) | c4; \
while ((a & 3) != 0 && n >= 1) \
{ *(UChar*)a = (UChar)c; a += 1; n -= 1; } \
while (n >= 16) \
{ *(UInt*)a = c4; a += 4; n -= 4; \
*(UInt*)a = c4; a += 4; n -= 4; \
*(UInt*)a = c4; a += 4; n -= 4; \
*(UInt*)a = c4; a += 4; n -= 4; } \
while (n >= 4) \
{ *(UInt*)a = c4; a += 4; n -= 4; } \
while (n >= 1) \