Teach DAG combine that multiplication by 1.0 can always be constant folded.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156023 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/fmuls.ll b/test/CodeGen/ARM/fmuls.ll
index bc118b8..3c3182b 100644
--- a/test/CodeGen/ARM/fmuls.ll
+++ b/test/CodeGen/ARM/fmuls.ll
@@ -21,3 +21,12 @@
; CORTEXA8: vmul.f32 d0, d1, d0
; CORTEXA9: test:
; CORTEXA9: vmul.f32 s{{.}}, s{{.}}, s{{.}}
+
+; VFP2: test2
+define float @test2(float %a) nounwind {
+; CHECK-NOT: mul
+; CHECK: mov pc, lr
+ %ret = fmul float %a, 1.0
+ ret float %ret
+}
+