diff options
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp | 2 | ||||
| -rw-r--r-- | llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp | 16 |
2 files changed, 17 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp b/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp index 12e69f8a788..aef43568b63 100644 --- a/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp +++ b/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp @@ -297,7 +297,7 @@ void GISelKnownBits::computeKnownBitsImpl(Register R, KnownBits &Known, Register SrcReg = MI.getOperand(1).getReg(); LLT SrcTy = MRI.getType(SrcReg); unsigned SrcBitWidth = SrcTy.isPointer() - ? DL.getIndexSize(SrcTy.getAddressSpace()) + ? DL.getIndexSizeInBits(SrcTy.getAddressSpace()) : SrcTy.getSizeInBits(); assert(SrcBitWidth && "SrcBitWidth can't be zero"); Known = Known.zextOrTrunc(SrcBitWidth, true); diff --git a/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp b/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp index 0cd35958f9f..2fd09feb1f7 100644 --- a/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp +++ b/llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp @@ -24,6 +24,22 @@ TEST_F(GISelMITest, TestKnownBitsCst) { EXPECT_EQ((uint64_t)1, Res.One.getZExtValue()); EXPECT_EQ((uint64_t)0xfe, Res.Zero.getZExtValue()); } +TEST_F(GISelMITest, TestKnownBitsPtrToIntViceVersa) { + StringRef MIRString = " %3:_(s16) = G_CONSTANT i16 256\n" + " %4:_(p0) = G_INTTOPTR %3\n" + " %5:_(s32) = G_PTRTOINT %4\n" + " %6:_(s32) = 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(256u, Res.One.getZExtValue()); + EXPECT_EQ(0xfffffeffu, Res.Zero.getZExtValue()); +} TEST_F(GISelMITest, TestKnownBits) { |
