1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/GVN/pr10820.ll b/test/Transforms/GVN/pr10820.ll
new file mode 100644
index 0000000..12c1e70
--- /dev/null
+++ b/test/Transforms/GVN/pr10820.ll
@@ -0,0 +1,18 @@
+; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
+
+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-f128:128:128-n8:16:32:64"
+target triple = "x86_64-unknown-linux-gnu"
+
+@g = external global i31
+
+define void @main() nounwind uwtable {
+entry:
+; CHECK: store i32
+  store i32 402662078, i32* bitcast (i31* @g to i32*), align 8
+; CHECK-NOT: load i31
+  %0 = load i31* @g, align 8
+; CHECK: store i31
+  store i31 %0, i31* undef, align 1
+  unreachable
+}