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Bug 1485029 - Use SIMD for PopulateBufferForBinaryString() in FileReader.cpp. r=smaug

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MozReview-Commit-ID: Gwoj13lFJsJ

Differential Revision: https://phabricator.services.mozilla.com/D3889

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Henri Sivonen 2018-08-22 13:59:43 +00:00
parent 777ed8fb73
commit 5adc82bb21
1 changed files with 3 additions and 7 deletions
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10
dom/file/FileReader.cpp
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@ -27,6 +27,7 @@
#include "nsError.h"
#include "nsNetUtil.h"
#include "xpcpublic.h"
#include "nsReadableUtils.h"
namespace mozilla {
namespace dom {
@ -265,13 +266,8 @@ void
PopulateBufferForBinaryString(char16_t* aDest, const char* aSource,
uint32_t aCount)
{
const unsigned char* source = (const unsigned char*)aSource;
char16_t* end = aDest + aCount;
while (aDest != end) {
*aDest = *source;
++aDest;
++source;
}
// Zero-extend each char to char16_t.
ConvertLatin1toUTF16(MakeSpan(aSource, aCount), MakeSpan(aDest, aCount));
}
nsresult