Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/strip-tbaa-metadata.ll

+; RUN: opt -S -strip-metadata %s | FileCheck %s
+
+; Test that !tbaa is removed from loads/stores.
+; CHECK: @foo
+; CHECK-NOT: !tbaa
+define double @foo(i32* nocapture %ptr1, double* nocapture %ptr2) nounwind readonly {
+  store i32 99999, i32* %ptr1, align 1, !tbaa !0
+  %1 = load double* %ptr2, align 8, !tbaa !3
+  ret double %1
+}
+
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
+
+; Test that !tbaa is removed from calls.
+; CHECK: @bar
+; CHECK-NOT: !tbaa
+define void @bar(i8* nocapture %p, i8* nocapture %q,
+       i8* nocapture %s) nounwind {
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p, i8* %q,
+                                            i64 16, i32 1, i1 false), !tbaa !4
+  store i8 2, i8* %s, align 1, !tbaa !5
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %q, i8* %p,
+                                            i64 16, i32 1, i1 false), !tbaa !4
+; CHECK ret void
+  ret void
+}
+
+; Test that the metadata nodes aren't left over.
+; CHECK-NOT: !0 =
+
+!0 = metadata !{metadata !"int", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA"}
+!3 = metadata !{metadata !"double", metadata !1}
+!4 = metadata !{metadata !"A", metadata !1}
+!5 = metadata !{metadata !"B", metadata !1}