1 files changed, 38 insertions, 5 deletions
diff --git a/test/Transforms/InstCombine/2008-11-20-DivMulRem.ll b/test/Transforms/InstCombine/2008-11-20-DivMulRem.ll
index b2774d6..43af190 100644
--- a/test/Transforms/InstCombine/2008-11-20-DivMulRem.ll
+++ b/test/Transforms/InstCombine/2008-11-20-DivMulRem.ll
@@ -1,34 +1,67 @@
-; RUN: opt < %s -instcombine -S > %t
-; RUN: grep urem %t | count 3
-; RUN: grep srem %t | count 1
-; RUN: grep sub %t | count 2
-; RUN: grep add %t | count 1
+; RUN: opt < %s -instcombine -S | FileCheck %s
 ; PR3103
 
 define i8 @test1(i8 %x, i8 %y) {
+; CHECK: @test1
   %A = udiv i8 %x, %y
+; CHECK-NEXT: urem
   %B = mul i8 %A, %y
   %C = sub i8 %x, %B
   ret i8 %C
+; CHECK-NEXT: ret
 }
 
 define i8 @test2(i8 %x, i8 %y) {
+; CHECK: @test2
   %A = sdiv i8 %x, %y
+; CHECK-NEXT: srem
   %B = mul i8 %A, %y
   %C = sub i8 %x, %B
   ret i8 %C
+; CHECK-NEXT: ret
 }
 
 define i8 @test3(i8 %x, i8 %y) {
+; CHECK: @test3
   %A = udiv i8 %x, %y
+; CHECK-NEXT: urem
   %B = mul i8 %A, %y
   %C = sub i8 %B, %x
+; CHECK-NEXT: sub
   ret i8 %C
+; CHECK-NEXT: ret
 }
 
 define i8 @test4(i8 %x) {
+; CHECK: @test4
   %A = udiv i8 %x, 3
+; CHECK-NEXT: urem
   %B = mul i8 %A, -3
+; CHECK-NEXT: sub
   %C = sub i8 %x, %B
+; CHECK-NEXT: add
   ret i8 %C
+; CHECK-NEXT: ret
+}
+
+define i32 @test5(i32 %x, i32 %y) {
+; CHECK: @test5
+; (((X / Y) * Y) / Y) -> X / Y
+  %div = sdiv i32 %x, %y
+; CHECK-NEXT: sdiv
+  %mul = mul i32 %div, %y
+  %r = sdiv i32 %mul, %y
+  ret i32 %r
+; CHECK-NEXT: ret
+}
+
+define i32 @test6(i32 %x, i32 %y) {
+; CHECK: @test6
+; (((X / Y) * Y) / Y) -> X / Y
+  %div = udiv i32 %x, %y
+; CHECK-NEXT: udiv
+  %mul = mul i32 %div, %y
+  %r = udiv i32 %mul, %y
+  ret i32 %r
+; CHECK-NEXT: ret
 }