From 27844533aad5c165523a5926424097699610d3f0 Mon Sep 17 00:00:00 2001 From: Nico Weber Date: Sat, 13 Oct 2012 22:30:41 +0000 Subject: [PATCH] "Implement" codegen support for __noop(). Eli discovered that __noop's sema behavior also needs some love. I filed PR14081 for that and intend to improve it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165886 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/CGBuiltin.cpp | 2 ++ test/CodeGen/builtin-ms-noop.cpp | 14 ++++++++++++++ 2 files changed, 16 insertions(+) create mode 100644 test/CodeGen/builtin-ms-noop.cpp diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp index cf124caec1..ad36b1c78e 100644 --- a/lib/CodeGen/CGBuiltin.cpp +++ b/lib/CodeGen/CGBuiltin.cpp @@ -1321,6 +1321,8 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD, llvm::StringRef Str = cast(AnnotationStrExpr)->getString(); return RValue::get(EmitAnnotationCall(F, AnnVal, Str, E->getExprLoc())); } + case Builtin::BI__noop: + return RValue::get(0); } // If this is an alias for a lib function (e.g. __builtin_sin), emit diff --git a/test/CodeGen/builtin-ms-noop.cpp b/test/CodeGen/builtin-ms-noop.cpp new file mode 100644 index 0000000000..42c25016b1 --- /dev/null +++ b/test/CodeGen/builtin-ms-noop.cpp @@ -0,0 +1,14 @@ +// RUN: %clang_cc1 -triple i686-pc-win32 -emit-llvm %s -o - | FileCheck %s + +class A { + public: + ~A() {} +}; + +void f() { +// CHECK: @_Z1fv +// CHECK-NOT: call void @_ZN1AD1Ev +// CHECK: ret void + __noop(A()); +}; + -- 2.40.0