Replace Sema-level implementation of -fassume-sane-operator-new with a

CodeGen-level implementation. Instead of adding an attribute to clang's
FunctionDecl, add the IR attribute directly. This means a module built with
this flag is now compatible with code built without it and vice versa.

This change also results in the 'noalias' attribute no longer being added to
calls to operator new in the IR; it's now only added to the declaration. It
also fixes a bug where we failed to add the attribute to the 'nothrow' versions
(because we didn't implicitly declare them, there was no good time to inject a
fake attribute).

llvm-svn: 265728

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/test/CodeGenCXX/new-array-init.cpp b/clang/test/CodeGenCXX/new-array-init.cpp
index 6b76f471a22..602f93c34f0 100644
--- a/clang/test/CodeGenCXX/new-array-init.cpp
+++ b/clang/test/CodeGenCXX/new-array-init.cpp
@@ -14,7 +14,7 @@ void fn(int n) {
 // CHECK-LABEL: define void @_Z15const_underflowv
 void const_underflow() {
   // CHECK-NOT: icmp ult i{{32|64}} %{{[^ ]+}}, 3
-  // CHECK: call noalias i8* @_Zna{{.}}(i{{32|64}} -1)
+  // CHECK: call i8* @_Zna{{.}}(i{{32|64}} -1)
   new int[2] { 1, 2, 3 };
 }
 
@@ -37,7 +37,7 @@ void check_array_value_init() {
   struct S;
   new (int S::*[3][4][5]) ();
 
-  // CHECK: call noalias i8* @_Zna{{.}}(i{{32 240|64 480}})
+  // CHECK: call i8* @_Zna{{.}}(i{{32 240|64 480}})
   // CHECK: getelementptr inbounds i{{32|64}}, i{{32|64}}* {{.*}}, i{{32|64}} 60
 
   // CHECK: phi