[clang] Add support for __builtin_memcpy_inline
Summary: This is a follow up on D61634 and the last step to implement http://lists.llvm.org/pipermail/llvm-dev/2019-April/131973.html
Reviewers: efriedma, courbet, tejohnson
Subscribers: hiraditya, cfe-commits, llvm-commits, jdoerfert, t.p.northover
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D73543
diff --git a/clang/lib/CodeGen/CGBuilder.h b/clang/lib/CodeGen/CGBuilder.h
index e736e83..7687f79 100644
--- a/clang/lib/CodeGen/CGBuilder.h
+++ b/clang/lib/CodeGen/CGBuilder.h
@@ -280,6 +280,13 @@
IsVolatile);
}
+ using CGBuilderBaseTy::CreateMemCpyInline;
+ llvm::CallInst *CreateMemCpyInline(Address Dest, Address Src, uint64_t Size) {
+ return CreateMemCpyInline(
+ Dest.getPointer(), Dest.getAlignment().getAsAlign(), Src.getPointer(),
+ Src.getAlignment().getAsAlign(), getInt64(Size));
+ }
+
using CGBuilderBaseTy::CreateMemMove;
llvm::CallInst *CreateMemMove(Address Dest, Address Src, llvm::Value *Size,
bool IsVolatile = false) {
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 7e0c531..509400b 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -2518,6 +2518,19 @@
return RValue::get(Dest.getPointer());
}
+ case Builtin::BI__builtin_memcpy_inline: {
+ Address Dest = EmitPointerWithAlignment(E->getArg(0));
+ Address Src = EmitPointerWithAlignment(E->getArg(1));
+ uint64_t Size =
+ E->getArg(2)->EvaluateKnownConstInt(getContext()).getZExtValue();
+ EmitNonNullArgCheck(RValue::get(Dest.getPointer()), E->getArg(0)->getType(),
+ E->getArg(0)->getExprLoc(), FD, 0);
+ EmitNonNullArgCheck(RValue::get(Src.getPointer()), E->getArg(1)->getType(),
+ E->getArg(1)->getExprLoc(), FD, 1);
+ Builder.CreateMemCpyInline(Dest, Src, Size);
+ return RValue::get(nullptr);
+ }
+
case Builtin::BI__builtin_char_memchr:
BuiltinID = Builtin::BI__builtin_memchr;
break;