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Added UNALIGNED_LOAD32 macros

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git-svn-id: https://cld2.googlecode.com/svn/trunk@158 b252ecd4-b096-bf77-eb8e-91563289f87e
This commit is contained in:
dsites@google.com
2014-03-29 00:10:23 +00:00
parent e46695760d
commit 495b668867
1 changed files with 7 additions and 4 deletions
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11
internal/utf8statetable.cc
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@@ -30,6 +30,7 @@
#include <string.h> // for NULL, memcpy, memmove #include <string.h> // for NULL, memcpy, memmove
#include "integral_types.h" // for uint8, uint32, int8 #include "integral_types.h" // for uint8, uint32, int8
#include "port.h"
#include "stringpiece.h" #include "stringpiece.h"
#include "offsetmap.h" #include "offsetmap.h"
@@ -514,8 +515,9 @@ DoAgain:
uint32 losub = st->losub; uint32 losub = st->losub;
uint32 hiadd = st->hiadd; uint32 hiadd = st->hiadd;
while (src < srclimit8) { while (src < srclimit8) {
uint32 s0123 = (reinterpret_cast<const uint32 *>(src))[0]; const uint32* src32 = reinterpret_cast<const uint32 *>(src);
uint32 s4567 = (reinterpret_cast<const uint32 *>(src))[1]; uint32 s0123 = UNALIGNED_LOAD32(&src32[0]);
uint32 s4567 = UNALIGNED_LOAD32(&src32[1]);
src += 8; src += 8;
// This is a fast range check for all bytes in [lowsub..0x80-hiadd) // This is a fast range check for all bytes in [lowsub..0x80-hiadd)
uint32 temp = (s0123 - losub) | (s0123 + hiadd) | uint32 temp = (s0123 - losub) | (s0123 + hiadd) |
@@ -601,8 +603,9 @@ int UTF8GenericScanFastAscii(const UTF8ScanObj* st,
do { do {
// Skip 8 bytes of ASCII at a whack; no endianness issue // Skip 8 bytes of ASCII at a whack; no endianness issue
while ((src < srclimit8) && while ((src < srclimit8) &&
(((reinterpret_cast<const uint32*>(src)[0] | (((UNALIGNED_LOAD32(&reinterpret_cast<const uint32*>(src)[0]) |
reinterpret_cast<const uint32*>(src)[1]) & 0x80808080) == 0)) { UNALIGNED_LOAD32(&reinterpret_cast<const uint32*>(src)[1]))
& 0x80808080) == 0)) {
src += 8; src += 8;
} }
// Run state table on the rest // Run state table on the rest