[llvm] [LVI] Generalize mask not equal conditions handling (PR #92946)

[Nikita Popov via llvm-commits]

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@@ -2788,4 +2788,31 @@ TEST_F(ConstantRangeTest, isSizeLargerThan) {
   EXPECT_FALSE(One.isSizeLargerThan(1));
 }
 
+TEST_F(ConstantRangeTest, MakeMaskNotEqualRangeExhaustive) {
+  unsigned Bits = 4;
+  unsigned Max = 1 << Bits;
+
+  for (unsigned MaskVal = 1; MaskVal < Max; ++MaskVal) {
+    APInt Mask(Bits, MaskVal);
+    for (unsigned CVal = 0; CVal < Max; ++CVal) {
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nikic wrote:

Can use EnumerateAPInts here.

https://github.com/llvm/llvm-project/pull/92946