A bit more memset / memcpy optimization.
Turns them into calls to memset / memcpy if 1) buffer(s) are not DWORD aligned,
2) size is not known to be greater or equal to some minimum value (currently 128).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26224 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index d0c5c4d..b3fafbf 100644
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -146,6 +146,8 @@
X86Subtarget::X86Subtarget(const Module &M, const std::string &FS) {
stackAlignment = 8;
+ // FIXME: this is a known good value for Yonah. Not sure about others.
+ MinRepStrSizeThreshold = 128;
indirectExternAndWeakGlobals = false;
X86SSELevel = NoMMXSSE;
X863DNowLevel = NoThreeDNow;