1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/load-arm.ll b/test/CodeGen/ARM/load-arm.ll
new file mode 100644
index 0000000000000..3807424ece81a
--- /dev/null
+++ b/test/CodeGen/ARM/load-arm.ll
@@ -0,0 +1,28 @@
+; RUN: llc -mtriple=arm %s -o - | FileCheck %s
+; RUN: llc -mtriple=thumbv7 %s -o - | FileCheck %s
+
+; We ended up feeding a deleted node back to TableGen when we converted "Off *
+; 410" into "(Off * 205) << 1", where the multiplication already existed in the
+; DAG.
+
+; CHECK-LABEL: addrmode_cse_mutation:
+; CHECK: {{mul|muls}}    [[OFFSET:r[0-9]+]], {{r[0-9]+}}, {{r[0-9]+}}
+; CHECK: {{ldrb|ldrb.w}} {{r[0-9]+}}, [r0, [[OFFSET]], lsl #3]
+define i32 @addrmode_cse_mutation(i8* %base, i32 %count) {
+  %offset = mul i32 %count, 277288
+  %ptr = getelementptr i8, i8* %base, i32 %offset
+  %val = load volatile i8, i8* %ptr
+  %res = mul i32 %count, 34661
+  ret i32 %res
+}
+
+; CHECK-LABEL: addrmode_cse_multi_use:
+; CHECK-NOT: {{ldrb|ldrb.w}} {{r[0-9]+}}, [{{r[0-9]+}}, {{r[0-9]+}}, lsl #3]
+define i32 @addrmode_cse_multi_use(i8* %base, i32 %count) {
+  %offset = mul i32 %count, 277288
+  %ptr = getelementptr i8, i8* %base, i32 %offset
+  %val = load volatile i8, i8* %ptr
+  %res = mul i32 %count, 34661
+  %res.1 = add i32 %res, %offset
+  ret i32 %res.1
+}