Add a couple new testcases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84385 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/BasicAA/memintrinsic-src.ll b/test/Analysis/BasicAA/memintrinsic-src.ll
new file mode 100644 (file)
index 0000000..084c807
--- /dev/null
+++ b/test/Analysis/BasicAA/memintrinsic-src.ll
@@ -0,0 +1,17 @@
+; RUN: opt -S -gvn -dse < %s | FileCheck %s
+
+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-NEXT: ret i8 2
+}

diff --git a/test/Analysis/BasicAA/memintrisic-size.ll b/test/Analysis/BasicAA/memintrisic-size.ll
new file mode 100644 (file)
index 0000000..480058b
--- /dev/null
+++ b/test/Analysis/BasicAA/memintrisic-size.ll
@@ -0,0 +1,13 @@
+; RUN: opt -S -gvn < %s | FileCheck %s
+
+declare void @llvm.memset.i8(i8*, i8, i8, i32)
+
+define i8 @test(i8* %P) {
+  %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
+}
+