Lower stpcpy_chk when possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98274 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/BuildLibCalls.cpp b/lib/Transforms/Utils/BuildLibCalls.cpp
index 633aaf4..7f62166 100644
--- a/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -87,6 +87,24 @@
return CI;
}
+/// EmitStpCpy - Emit a call to the stpcpy function to the builder, for the
+/// specified pointer arguments.
+Value *llvm::EmitStpCpy(Value *Dst, Value *Src, IRBuilder<> &B,
+ const TargetData *TD) {
+ Module *M = B.GetInsertBlock()->getParent()->getParent();
+ AttributeWithIndex AWI[2];
+ AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture);
+ AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
+ const Type *I8Ptr = B.getInt8PtrTy();
+ Value *StpCpy = M->getOrInsertFunction("stpcpy", AttrListPtr::get(AWI, 2),
+ I8Ptr, I8Ptr, I8Ptr, NULL);
+ CallInst *CI = B.CreateCall2(StpCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
+ "stpcpy");
+ if (const Function *F = dyn_cast<Function>(StpCpy->stripPointerCasts()))
+ CI->setCallingConv(F->getCallingConv());
+ return CI;
+}
+
/// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the
/// specified pointer arguments.
Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len,