instcombine: Migrate math library call simplifications

[oota-llvm.git] / test / Transforms / InstCombine / div.ll

diff --git a/test/Transforms/InstCombine/div.ll b/test/Transforms/InstCombine/div.ll
index 2e24f19dce4caf2e302e93c2777a4bbfcc02cf28..8a0897b972de39f92f801dc5a948d0e8d6f02833 100644 (file)
--- a/test/Transforms/InstCombine/div.ll
+++ b/test/Transforms/InstCombine/div.ll
@@ -118,3 +118,17 @@ define i32 @test14(i8 %x) nounwind {
 ; CHECK: @test14
 ; CHECK-NEXT: ret i32 0
 }
+
+; PR9814
+define i32 @test15(i32 %a, i32 %b) nounwind {
+  %shl = shl i32 1, %b
+  %div = lshr i32 %shl, 2
+  %div2 = udiv i32 %a, %div
+  ret i32 %div2
+; CHECK: @test15
+; CHECK-NEXT: add i32 %b, -2
+; CHECK-NEXT: lshr i32 %a, 
+; CHECK-NEXT: ret i32
+}
+
+