1 files changed, 14 insertions, 0 deletions
diff --git a/test/Transforms/DeadStoreElimination/partial-overwrite.ll b/test/Transforms/DeadStoreElimination/partial-overwrite.ll
new file mode 100644
index 0000000..048d464
--- /dev/null
+++ b/test/Transforms/DeadStoreElimination/partial-overwrite.ll
@@ -0,0 +1,14 @@
+; RUN: opt -dse -S %s | FileCheck %s
+; Note that we could do better by merging the two stores into one.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @test(i32* %P) {
+  store i32 0, i32* %P
+; CHECK: store i32
+  %Q = bitcast i32* %P to i16*
+  store i16 1, i16* %Q
+; CHECK: store i16
+  ret void
+}