1 files changed, 45 insertions, 0 deletions
diff --git a/llvm/test/Transforms/ConstantHoisting/ARM/bad-cases.ll b/llvm/test/Transforms/ConstantHoisting/ARM/bad-cases.ll
index 3602eb9f3fd..8fa78e3d69b 100644
--- a/llvm/test/Transforms/ConstantHoisting/ARM/bad-cases.ll
+++ b/llvm/test/Transforms/ConstantHoisting/ARM/bad-cases.ll
@@ -45,3 +45,48 @@ bb2:
 default:
   ret void
 }
+
+; We don't want to convert constant divides because the benefit from converting
+; them to a mul in the backend is larget than constant materialization savings.
+define void @signed_const_division(i32 %in1, i32 %in2, i32* %addr) {
+; CHECK-LABEL: @signed_const_division
+; CHECK: %res1 = sdiv i32 %l1, 1000000000
+; CHECK: %res2 = srem i32 %l2, 1000000000
+entry:
+  br label %loop
+
+loop:
+  %l1 = phi i32 [%res1, %loop], [%in1, %entry]
+  %l2 = phi i32 [%res2, %loop], [%in2, %entry]
+  %res1 = sdiv i32 %l1, 1000000000
+  store volatile i32 %res1, i32* %addr
+  %res2 = srem i32 %l2, 1000000000
+  store volatile i32 %res2, i32* %addr
+  %again = icmp eq i32 %res1, %res2
+  br i1 %again, label %loop, label %end
+
+end:
+  ret void
+}
+
+define void @unsigned_const_division(i32 %in1, i32 %in2, i32* %addr) {
+; CHECK-LABEL: @unsigned_const_division
+; CHECK: %res1 = udiv i32 %l1, 1000000000
+; CHECK: %res2 = urem i32 %l2, 1000000000
+
+entry:
+  br label %loop
+
+loop:
+  %l1 = phi i32 [%res1, %loop], [%in1, %entry]
+  %l2 = phi i32 [%res2, %loop], [%in2, %entry]
+  %res1 = udiv i32 %l1, 1000000000
+  store volatile i32 %res1, i32* %addr
+  %res2 = urem i32 %l2, 1000000000
+  store volatile i32 %res2, i32* %addr
+  %again = icmp eq i32 %res1, %res2
+  br i1 %again, label %loop, label %end
+
+end:
+  ret void
+}