[llvm] 4ee240b - [NFC] [ValueTracking] Add unittest for haveNoCommonBitsSet
Chuanqi Xu via llvm-commits
llvm-commits at lists.llvm.org
Sun Feb 13 22:10:57 PST 2022
Author: Chuanqi Xu
Date: 2022-02-14T14:10:30+08:00
New Revision: 4ee240b86085ef90d20ce731a434287805d119ea
URL: https://github.com/llvm/llvm-project/commit/4ee240b86085ef90d20ce731a434287805d119ea
DIFF: https://github.com/llvm/llvm-project/commit/4ee240b86085ef90d20ce731a434287805d119ea.diff
LOG: [NFC] [ValueTracking] Add unittest for haveNoCommonBitsSet
Added:
Modified:
llvm/unittests/Analysis/ValueTrackingTest.cpp
Removed:
################################################################################
diff --git a/llvm/unittests/Analysis/ValueTrackingTest.cpp b/llvm/unittests/Analysis/ValueTrackingTest.cpp
index f4b4d345a054..9fb4a7ee7734 100644
--- a/llvm/unittests/Analysis/ValueTrackingTest.cpp
+++ b/llvm/unittests/Analysis/ValueTrackingTest.cpp
@@ -1725,6 +1725,28 @@ TEST_F(ComputeKnownBitsTest, ComputeKnownBitsCrash) {
A, M->getDataLayout(), /* Depth */ 0, &AC, F->front().getTerminator());
}
+TEST_F(ValueTrackingTest, HaveNoCommonBitsSet) {
+ {
+ // Check for an inverted mask: (X & ~M) op (Y & M).
+ auto M = parseModule(R"(
+ define i32 @test(i32 %X, i32 %Y, i32 %M) {
+ %1 = xor i32 %M, -1
+ %LHS = and i32 %1, %X
+ %RHS = and i32 %Y, %M
+ %Ret = add i32 %LHS, %RHS
+ ret i32 %Ret
+ })");
+
+ F = M->getFunction("test");
+ auto *LHS = findInstructionByNameOrNull(F, "LHS");
+ auto *RHS = findInstructionByNameOrNull(F, "RHS");
+
+ const DataLayout &DL = M->getDataLayout();
+ EXPECT_TRUE(haveNoCommonBitsSet(LHS, RHS, DL));
+ EXPECT_TRUE(haveNoCommonBitsSet(RHS, LHS, DL));
+ }
+}
+
class IsBytewiseValueTest : public ValueTrackingTest,
public ::testing::WithParamInterface<
std::pair<const char *, const char *>> {
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