Add a few cases to instcombine's extractvalue testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53675 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/extractvalue.ll b/test/Transforms/InstCombine/extractvalue.ll
index e84b102923ed741e376b981d58726d7e434a47e9..59b996e130e1c433799a112db3a6f07e830e2e2e 100644 (file)
--- a/test/Transforms/InstCombine/extractvalue.ll
+++ b/test/Transforms/InstCombine/extractvalue.ll
@@ -17,8 +17,22 @@ define i32 @foo() {
         %ns1.2 = insertvalue {i32, {i32, i32}} %ns1.1, i32 %v1, 1, 0
         %ns1   = insertvalue {i32, {i32, i32}} %ns1.2, i32 %v2, 1, 1
         %s2    = extractvalue {i32, {i32, i32}} %ns1, 1
+        %v3    = extractvalue {i32, {i32, i32}} %ns1, 1, 1
         call void @bar({i32, i32} %s2)
-        %v3 = extractvalue {i32, {i32, i32}} %ns1, 1, 1
-        ret i32 %v3
+
+        ; Use nested extractvalues to get to a value
+        %s3    = extractvalue {i32, {i32, i32}} %ns1, 1
+        %v4    = extractvalue {i32, i32} %s3, 1
+        call void @bar({i32, i32} %s3)
+
+        ; Use nested insertvalues to build a nested struct
+        %s4.1 = insertvalue {i32, i32} undef, i32 %v3, 0
+        %s4   = insertvalue {i32, i32} %s4.1, i32 %v4, 1
+        %ns2  = insertvalue {i32, {i32, i32}} undef, {i32, i32} %s4, 1
+
+        ; And now extract a single value from there
+        %v5   = extractvalue {i32, {i32, i32}} %ns2, 1, 1
+
+        ret i32 %v5
 }