diff options
Diffstat (limited to 'llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp')
| -rw-r--r-- | llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp b/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp index 2fd09feb1f7..f67184fc208 100644 --- a/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp +++ b/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp @@ -40,6 +40,22 @@ TEST_F(GISelMITest, TestKnownBitsPtrToIntViceVersa) { EXPECT_EQ(256u, Res.One.getZExtValue()); EXPECT_EQ(0xfffffeffu, Res.Zero.getZExtValue()); } +TEST_F(GISelMITest, TestKnownBitsXOR) { + StringRef MIRString = " %3:_(s8) = G_CONSTANT i8 4\n" + " %4:_(s8) = G_CONSTANT i8 7\n" + " %5:_(s8) = G_XOR %3, %4\n" + " %6:_(s8) = COPY %5\n"; + setUp(MIRString); + if (!TM) + return; + unsigned CopyReg = Copies[Copies.size() - 1]; + MachineInstr *FinalCopy = MRI->getVRegDef(CopyReg); + unsigned SrcReg = FinalCopy->getOperand(1).getReg(); + GISelKnownBits Info(*MF); + KnownBits Res = Info.getKnownBits(SrcReg); + EXPECT_EQ(3u, Res.One.getZExtValue()); + EXPECT_EQ(252u, Res.Zero.getZExtValue()); +} TEST_F(GISelMITest, TestKnownBits) { |
