[llvm] [IndVarSimplify] [NFC] Fix incorrect test (PR #159683)

[Florian Mayer via llvm-commits]

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@@ -109,12 +109,9 @@ for.body:                                         ; preds = %entry, %cont
   %0 = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %i.04, i32 1)
   %1 = extractvalue { i32, i1 } %0, 1
 
-; It is theoretically possible to prove this, but SCEV cannot
-; represent non-unsigned-wrapping subtraction operations.
-
 ; CHECK: for.body:
-; CHECK:  [[COND:%[^ ]+]] = extractvalue { i32, i1 } %1, 1
-; CHECK-NEXT:  br i1 [[COND]], label %trap, label %cont, !nosanitize !0
+; CHECK-NOT: @llvm.usub.with.overflow.i32
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fmayer wrote:

Shouldn't we add overflowing versions for the other tests then as well? Would be kind of weird to into have it for usub.

https://github.com/llvm/llvm-project/pull/159683