src/platform-posix.cc - Issue 14365011: OS::MemMove/OS::MemCopy: Don't call through to generated code when size == 0 to avoid prefetching i…

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Unified Diff: src/platform-posix.cc

Issue 14365011: OS::MemMove/OS::MemCopy: Don't call through to generated code when size == 0 to avoid prefetching i… (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 7 years, 8 months ago

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Index: src/platform-posix.cc

diff --git a/src/platform-posix.cc b/src/platform-posix.cc

index 48898ed9aad0acdb4cc06ccba4b01c9818f26de4..9f650d1e5b5c3b7bcad6ee53fc2b8921cad7580a 100644

--- a/src/platform-posix.cc

+++ b/src/platform-posix.cc

@@ -334,6 +334,7 @@ OS::MemMoveFunction CreateMemMoveFunction();

// Copy memory area. No restrictions.

void OS::MemMove(void* dest, const void* src, size_t size) {

+ if (size == 0) return;

// Note: here we rely on dependent reads being ordered. This is true

// on all architectures we currently support.

(*memmove_function)(dest, src, size);

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