Make FunctionAttrs TBAA-aware.

llvm-svn: 118417

1 files changed, 37 insertions, 0 deletions

diff --git a/llvm/test/Analysis/TypeBasedAliasAnalysis/functionattrs.ll b/llvm/test/Analysis/TypeBasedAliasAnalysis/functionattrs.ll
new file mode 100644
index 00000000000..62fe8aa1644
--- /dev/null
+++ b/llvm/test/Analysis/TypeBasedAliasAnalysis/functionattrs.ll
@@ -0,0 +1,37 @@
+; RUN: opt < %s -enable-tbaa -tbaa -basicaa -functionattrs -S | FileCheck %s
+
+; FunctionAttrs should make use of TBAA.
+
+; CHECK: define void @test0_yes(i32* nocapture %p) nounwind readnone {
+define void @test0_yes(i32* %p) nounwind {
+  store i32 0, i32* %p, !tbaa !1
+  ret void
+}
+
+; CHECK: define void @test0_no(i32* nocapture %p) nounwind {
+define void @test0_no(i32* %p) nounwind {
+  store i32 0, i32* %p, !tbaa !2
+  ret void
+}
+
+; CHECK: define void @test1_yes(i32* %p) nounwind readonly {
+define void @test1_yes(i32* %p) nounwind {
+  call void @callee(i32* %p), !tbaa !1
+  ret void
+}
+
+; CHECK: define void @test1_no(i32* %p) nounwind {
+define void @test1_no(i32* %p) nounwind {
+  call void @callee(i32* %p), !tbaa !2
+  ret void
+}
+
+declare void @callee(i32* %p) nounwind
+
+; Root note.
+!0 = metadata !{ }
+
+; Invariant memory.
+!1 = metadata !{ metadata !"foo", metadata !0, i1 1 }
+; Not invariant memory.
+!2 = metadata !{ metadata !"foo", metadata !0, i1 0 }