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-rw-r--r--test/Transforms/IPConstantProp/return-constants.ll39
1 files changed, 30 insertions, 9 deletions
diff --git a/test/Transforms/IPConstantProp/return-constants.ll b/test/Transforms/IPConstantProp/return-constants.ll
index 40567f80bd..7205c2820a 100644
--- a/test/Transforms/IPConstantProp/return-constants.ll
+++ b/test/Transforms/IPConstantProp/return-constants.ll
@@ -1,20 +1,41 @@
-; RUN: llvm-as < %s | opt -ipconstprop | llvm-dis | grep {add i32 21, 21}
+; RUN: llvm-as < %s | opt -ipconstprop | llvm-dis > %t
+;; Check that the 21 constants got propagated properly
+; RUN: cat %t | grep {%M = add i32 21, 21}
+;; Check that the second return values didn't get propagated
+; RUN: cat %t | grep {%N = add i32 %B, %D}
-define internal {i32, i32} @foo(i1 %C) {
- br i1 %C, label %T, label %F
+define internal {i32, i32} @foo(i1 %Q) {
+ br i1 %Q, label %T, label %F
T: ; preds = %0
- ret i32 21, i32 21
+ ret i32 21, i32 22
F: ; preds = %0
- ret i32 21, i32 21
+ ret i32 21, i32 23
}
-define i32 @caller(i1 %C) {
- %X = call {i32, i32} @foo( i1 %C )
+define internal {i32, i32} @bar(i1 %Q) {
+ %A = insertvalue { i32, i32 } undef, i32 21, 0
+ br i1 %Q, label %T, label %F
+
+T: ; preds = %0
+ %B = insertvalue { i32, i32 } %A, i32 22, 1
+ ret { i32, i32 } %B
+
+F: ; preds = %0
+ %C = insertvalue { i32, i32 } %A, i32 23, 1
+ ret { i32, i32 } %C
+}
+
+define { i32, i32 } @caller(i1 %Q) {
+ %X = call {i32, i32} @foo( i1 %Q )
%A = getresult {i32, i32} %X, 0
%B = getresult {i32, i32} %X, 1
- %Y = add i32 %A, %B
- ret i32 %Y
+ %Y = call {i32, i32} @bar( i1 %Q )
+ %C = extractvalue {i32, i32} %Y, 0
+ %D = extractvalue {i32, i32} %Y, 1
+ %M = add i32 %A, %C
+ %N = add i32 %B, %D
+ ret { i32, i32 } %X
}