[llvm] [InstCombine] Decompose more icmps into masks (PR #110836)

[via llvm-commits]

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@@ -3335,10 +3335,8 @@ define i1 @icmp_eq_or_z_or_pow2orz_fail_bad_pred2(i8 %x, i8 %y) {
 
 define i1 @and_slt_to_mask(i8 %x) {
 ; CHECK-LABEL: @and_slt_to_mask(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i8 [[X:%.*]], -124
-; CHECK-NEXT:    [[AND:%.*]] = and i8 [[X]], 2
-; CHECK-NEXT:    [[CMP2:%.*]] = icmp eq i8 [[AND]], 0
-; CHECK-NEXT:    [[AND2:%.*]] = and i1 [[CMP]], [[CMP2]]
+; CHECK-NEXT:    [[TMP1:%.*]] = and i8 [[X:%.*]], -2
+; CHECK-NEXT:    [[AND2:%.*]] = icmp eq i8 [[TMP1]], -128
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goldsteinn wrote:

See: https://github.com/llvm/llvm-project/pull/110880

https://github.com/llvm/llvm-project/pull/110836