[llvm] [ValueTracking] Infer `X u<= X +nuw Y` for any Y (PR #75524)

Nikita Popov via llvm-commits llvm-commits at lists.llvm.org
Thu Dec 14 12:15:42 PST 2023


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@@ -321,9 +321,7 @@ define i1 @pr70374(i32 %x, i32 %y, i32 %z) {
 ; CHECK-LABEL: @pr70374(
 ; CHECK-NEXT:    [[ADD:%.*]] = add nuw i32 [[Y:%.*]], [[Z:%.*]]
 ; CHECK-NEXT:    [[CMP1:%.*]] = icmp ule i32 [[ADD]], [[X:%.*]]
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp uge i32 [[X]], [[Y]]
-; CHECK-NEXT:    [[RES:%.*]] = and i1 [[CMP2]], [[CMP1]]
-; CHECK-NEXT:    ret i1 [[RES]]
+; CHECK-NEXT:    ret i1 [[CMP1]]
 ;
   %add = add nuw i32 %y, %z
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nikic wrote:

Add test for commuted add operands?

https://github.com/llvm/llvm-project/pull/75524


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