Merge tests into modref.ll. Also add a test for r84174 at Chris' behest!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84400 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/BasicAA/modref.ll b/test/Analysis/BasicAA/modref.ll
index 54d415e..b3d93ac 100644
--- a/test/Analysis/BasicAA/modref.ll
+++ b/test/Analysis/BasicAA/modref.ll
@@ -1,6 +1,9 @@
-; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
+; RUN: opt < %s -basicaa -gvn -dse -S | FileCheck %s
declare void @llvm.memset.i32(i8*, i8, i32, i32)
+declare void @llvm.memset.i8(i8*, i8, i8, i32)
+declare void @llvm.memcpy.i8(i8*, i8*, i8, i32)
+declare void @llvm.lifetime.end(i64, i8* nocapture)
declare void @external(i32*)
@@ -19,3 +22,40 @@
; CHECK: ret i32 0
}
+declare void @llvm.memcpy.i8(i8*, i8*, i8, i32)
+
+define i8 @test1() {
+; CHECK: @test1
+ %A = alloca i8
+ %B = alloca i8
+
+ store i8 2, i8* %B ;; Not written to by memcpy
+
+ call void @llvm.memcpy.i8(i8* %A, i8* %B, i8 -1, i32 0)
+
+ %C = load i8* %B
+ ret i8 %C
+; CHECK: ret i8 2
+}
+
+define i8 @test2(i8* %P) {
+; CHECK: @test2
+ %P2 = getelementptr i8* %P, i32 1000
+ store i8 1, i8* %P2 ;; Not dead across memset
+ call void @llvm.memset.i8(i8* %P, i8 2, i8 127, i32 0)
+ %A = load i8* %P2
+ ret i8 %A
+; CHECK: ret i8 1
+}
+
+define void @test3(i8* %P) {
+; CHECK: @test3
+ %P2 = getelementptr i8* %P, i32 2
+ store i8 1, i8* %P2 ;; Not read by lifetime.end
+; CHECK: store
+ call void @llvm.lifetime.end(i64 1, i8* %P)
+ store i8 2, i8* %P2
+; CHECK-NOT: store
+ ret void
+; CHECK: ret void
+}
\ No newline at end of file