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-rw-r--r--llvm/test/Feature/OperandBundles/dse.ll29
1 files changed, 29 insertions, 0 deletions
diff --git a/llvm/test/Feature/OperandBundles/dse.ll b/llvm/test/Feature/OperandBundles/dse.ll
new file mode 100644
index 00000000000..cc5647a2fa0
--- /dev/null
+++ b/llvm/test/Feature/OperandBundles/dse.ll
@@ -0,0 +1,29 @@
+; RUN: opt -S -dse < %s | FileCheck %s
+
+declare void @f()
+declare noalias i8* @malloc(i32) nounwind
+
+define void @test_0() {
+; CHECK-LABEL: @test_0(
+ %m = call i8* @malloc(i32 24)
+ tail call void @f() [ "unknown"(i8* %m) ]
+; CHECK: store i8 -19, i8* %m
+ store i8 -19, i8* %m
+ ret void
+}
+
+define i8* @test_1() {
+; CHECK-LABEL: @test_1(
+ %m = call i8* @malloc(i32 24)
+ tail call void @f() [ "unknown"(i8* %m) ]
+ store i8 -19, i8* %m
+ tail call void @f()
+ store i8 101, i8* %m
+
+; CHECK: tail call void @f() [ "unknown"(i8* %m) ]
+; CHECK: store i8 -19, i8* %m
+; CHECK: tail call void @f()
+; CHECK: store i8 101, i8* %m
+
+ ret i8* %m
+}
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