Teach ConstantFoldInstruction() how to fold insertvalue and extractvalue.
llvm-svn: 120316
diff --git a/llvm/test/Transforms/ConstProp/extractvalue.ll b/llvm/test/Transforms/ConstProp/extractvalue.ll
new file mode 100644
index 0000000..32d5291
--- /dev/null
+++ b/llvm/test/Transforms/ConstProp/extractvalue.ll
@@ -0,0 +1,68 @@
+; RUN: opt < %s -constprop -S | FileCheck %s
+
+%struct = type { i32, [4 x i8] }
+%array = type [3 x %struct]
+
+define i32 @test1() {
+ %A = extractvalue %struct { i32 2, [4 x i8] c"foo\00" }, 0
+ ret i32 %A
+; CHECK: @test1
+; CHECK: ret i32 2
+}
+
+define i8 @test2() {
+ %A = extractvalue %struct { i32 2, [4 x i8] c"foo\00" }, 1, 2
+ ret i8 %A
+; CHECK: @test2
+; CHECK: ret i8 111
+}
+
+define i32 @test3() {
+ %A = extractvalue %array [ %struct { i32 0, [4 x i8] c"aaaa" }, %struct { i32 1, [4 x i8] c"bbbb" }, %struct { i32 2, [4 x i8] c"cccc" } ], 1, 0
+ ret i32 %A
+; CHECK: @test3
+; CHECK: ret i32 1
+}
+
+define i32 @zeroinitializer-test1() {
+ %A = extractvalue %struct zeroinitializer, 0
+ ret i32 %A
+; CHECK: @zeroinitializer-test1
+; CHECK: ret i32 0
+}
+
+define i8 @zeroinitializer-test2() {
+ %A = extractvalue %struct zeroinitializer, 1, 2
+ ret i8 %A
+; CHECK: @zeroinitializer-test2
+; CHECK: ret i8 0
+}
+
+define i32 @zeroinitializer-test3() {
+ %A = extractvalue %array zeroinitializer, 1, 0
+ ret i32 %A
+; CHECK: @zeroinitializer-test3
+; CHECK: ret i32 0
+}
+
+define i32 @undef-test1() {
+ %A = extractvalue %struct undef, 0
+ ret i32 %A
+; CHECK: @undef-test1
+; CHECK: ret i32 undef
+}
+
+define i8 @undef-test2() {
+ %A = extractvalue %struct undef, 1, 2
+ ret i8 %A
+; CHECK: @undef-test2
+; CHECK: ret i8 undef
+}
+
+define i32 @undef-test3() {
+ %A = extractvalue %array undef, 1, 0
+ ret i32 %A
+; CHECK: @undef-test3
+; CHECK: ret i32 undef
+}
+