Revert "Remove an InstCombine that seems to have become redundant."

[oota-llvm.git] / test / Transforms / InstSimplify / rem.ll

diff --git a/test/Transforms/InstSimplify/rem.ll b/test/Transforms/InstSimplify/rem.ll
index 4c8f87cf5e92034b01c63c389a1968b7a34fc63f..f5ea45107e2a8297456788a0039607e14512442e 100644 (file)
--- a/test/Transforms/InstSimplify/rem.ll
+++ b/test/Transforms/InstSimplify/rem.ll
@@ -1,7 +1,7 @@
 ; RUN: opt < %s -instsimplify -S | FileCheck %s
 
 define i32 @select1(i32 %x, i1 %b) {
-; CHECK: @select1
+; CHECK-LABEL: @select1(
   %rhs = select i1 %b, i32 %x, i32 1
   %rem = srem i32 %x, %rhs
   ret i32 %rem
@@ -9,9 +9,37 @@ define i32 @select1(i32 %x, i1 %b) {
 }
 
 define i32 @select2(i32 %x, i1 %b) {
-; CHECK: @select2
+; CHECK-LABEL: @select2(
   %rhs = select i1 %b, i32 %x, i32 1
   %rem = urem i32 %x, %rhs
   ret i32 %rem
 ; CHECK: ret i32 0
 }
+
+define i32 @rem1(i32 %x, i32 %n) {
+; CHECK-LABEL: @rem1(
+; CHECK-NEXT: %mod = srem i32 %x, %n
+; CHECK-NEXT: ret i32 %mod
+ %mod = srem i32 %x, %n
+ %mod1 = srem i32 %mod, %n
+ ret i32 %mod1
+}
+
+define i32 @rem2(i32 %x, i32 %n) {
+; CHECK-LABEL: @rem2(
+; CHECK-NEXT: %mod = urem i32 %x, %n
+; CHECK-NEXT: ret i32 %mod
+ %mod = urem i32 %x, %n
+ %mod1 = urem i32 %mod, %n
+ ret i32 %mod1
+}
+
+define i32 @rem3(i32 %x, i32 %n) {
+; CHECK-LABEL: @rem3(
+; CHECK-NEXT: %[[srem:.*]] = srem i32 %x, %n
+; CHECK-NEXT: %[[urem:.*]] = urem i32 %[[srem]], %n
+; CHECK-NEXT: ret i32 %[[urem]]
+ %mod = srem i32 %x, %n
+ %mod1 = urem i32 %mod, %n
+ ret i32 %mod1
+}