[InstCombine] Add new tests for icmp ugt/ult (add nuw X, C2), C

Differential Revision: https://reviews.llvm.org/D51040

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340284 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/icmp-add.ll b/test/Transforms/InstCombine/icmp-add.ll
index ec2fd13..49517e5 100644 (file)
--- a/test/Transforms/InstCombine/icmp-add.ll
+++ b/test/Transforms/InstCombine/icmp-add.ll
@@ -281,3 +281,46 @@ define i1 @slt_zero_add_nuw_signbit(i8 %x) {
   ret i1 %z
 }
 
+define i1 @reduce_add_ult(i32 %in) {
+; CHECK-LABEL: @reduce_add_ult(
+; CHECK-NEXT:    [[A6:%.*]] = add nuw i32 [[IN:%.*]], 3
+; CHECK-NEXT:    [[A18:%.*]] = icmp ult i32 [[A6]], 12
+; CHECK-NEXT:    ret i1 [[A18]]
+;
+  %a6 = add nuw i32 %in, 3
+  %a18 = icmp ult i32 %a6, 12
+  ret i1 %a18
+}
+
+define i1 @reduce_add_ugt(i32 %in) {
+; CHECK-LABEL: @reduce_add_ugt(
+; CHECK-NEXT:    [[A6:%.*]] = add nuw i32 [[IN:%.*]], 3
+; CHECK-NEXT:    [[A18:%.*]] = icmp ugt i32 [[A6]], 12
+; CHECK-NEXT:    ret i1 [[A18]]
+;
+  %a6 = add nuw i32 %in, 3
+  %a18 = icmp ugt i32 %a6, 12
+  ret i1 %a18
+}
+
+define i1 @reduce_add_ule(i32 %in) {
+; CHECK-LABEL: @reduce_add_ule(
+; CHECK-NEXT:    [[A6:%.*]] = add nuw i32 [[IN:%.*]], 3
+; CHECK-NEXT:    [[A18:%.*]] = icmp ult i32 [[A6]], 13
+; CHECK-NEXT:    ret i1 [[A18]]
+;
+  %a6 = add nuw i32 %in, 3
+  %a18 = icmp ule i32 %a6, 12
+  ret i1 %a18
+}
+
+define i1 @reduce_add_uge(i32 %in) {
+; CHECK-LABEL: @reduce_add_uge(
+; CHECK-NEXT:    [[A6:%.*]] = add nuw i32 [[IN:%.*]], 3
+; CHECK-NEXT:    [[A18:%.*]] = icmp ugt i32 [[A6]], 11
+; CHECK-NEXT:    ret i1 [[A18]]
+;
+  %a6 = add nuw i32 %in, 3
+  %a18 = icmp uge i32 %a6, 12
+  ret i1 %a18
+}