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-rw-r--r--llvm/test/Transforms/MergeFunc/constant-entire-value.ll42
1 files changed, 42 insertions, 0 deletions
diff --git a/llvm/test/Transforms/MergeFunc/constant-entire-value.ll b/llvm/test/Transforms/MergeFunc/constant-entire-value.ll
new file mode 100644
index 00000000000..cb193d06ee4
--- /dev/null
+++ b/llvm/test/Transforms/MergeFunc/constant-entire-value.ll
@@ -0,0 +1,42 @@
+; RUN: opt -S -mergefunc < %s | FileCheck %s
+
+; RUN: opt -S -mergefunc < %s | FileCheck -check-prefix=NOPLUS %s
+
+; This makes sure that zeros in constants don't cause problems with string based
+; memory comparisons
+define internal i32 @sum(i32 %x, i32 %y) {
+; CHECK-LABEL: @sum
+ %sum = add i32 %x, %y
+ %1 = extractvalue [3 x i32] [ i32 3, i32 0, i32 2 ], 2
+ %sum2 = add i32 %sum, %1
+ %sum3 = add i32 %sum2, %y
+ ret i32 %sum3
+}
+
+define internal i32 @add(i32 %x, i32 %y) {
+; CHECK-LABEL: @add
+ %sum = add i32 %x, %y
+ %1 = extractvalue [3 x i32] [ i32 3, i32 0, i32 1 ], 2
+ %sum2 = add i32 %sum, %1
+ %sum3 = add i32 %sum2, %y
+ ret i32 %sum3
+}
+
+define internal i32 @plus(i32 %x, i32 %y) {
+; NOPLUS-NOT: @plus
+ %sum = add i32 %x, %y
+ %1 = extractvalue [3 x i32] [ i32 3, i32 0, i32 5 ], 2
+ %sum2 = add i32 %sum, %1
+ %sum3 = add i32 %sum2, %y
+ ret i32 %sum3
+}
+
+define internal i32 @next(i32 %x, i32 %y) {
+; CHECK-LABEL: @next
+ %sum = add i32 %x, %y
+ %1 = extractvalue [3 x i32] [ i32 3, i32 0, i32 5 ], 2
+ %sum2 = add i32 %sum, %1
+ %sum3 = add i32 %sum2, %y
+ ret i32 %sum3
+}
+
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