Fix ARM isle code that optimize multiply by constants which are power-of-2 +/- 1.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76520 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/mul_const.ll b/test/CodeGen/ARM/mul_const.ll
new file mode 100644
index 0000000..f5ace18
--- /dev/null
+++ b/test/CodeGen/ARM/mul_const.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc -march=arm | FileCheck %s
+
+define i32 @t1(i32 %v) nounwind readnone {
+entry:
+; CHECK: t1:
+; CHECK: add r0, r0, r0, lsl #3
+ %0 = mul i32 %v, 9
+ ret i32 %0
+}
+
+define i32 @t2(i32 %v) nounwind readnone {
+entry:
+; CHECK: t2:
+; CHECK: rsb r0, r0, r0, lsl #3
+ %0 = mul i32 %v, 7
+ ret i32 %0
+}