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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2019-08-29 17:55:05 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2019-08-29 17:55:05 +0000 |
| commit | 093ebf927569a7d79991716cc786aa2c9250d012 (patch) | |
| tree | ecddc1a112d68f7e00cd693186afb8ba3ecccba3 /llvm/lib/CodeGen | |
| parent | f9cdb98f406f785bb7c0d466aa8f08571c3516c9 (diff) | |
| download | bcm5719-llvm-093ebf927569a7d79991716cc786aa2c9250d012.tar.gz bcm5719-llvm-093ebf927569a7d79991716cc786aa2c9250d012.zip | |
GlobalISel: Don't compute known bits for non-integral GEP
llvm-svn: 370392
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp b/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp index 0870aa3812f..057a32fd1d5 100644 --- a/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp +++ b/llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp @@ -150,8 +150,13 @@ void GISelKnownBits::computeKnownBitsImpl(Register R, KnownBits &Known, Known.Zero = KnownZeroOut; break; } - // G_GEP is like G_ADD. FIXME: Is this true for all targets? - case TargetOpcode::G_GEP: + case TargetOpcode::G_GEP: { + // G_GEP is like G_ADD. FIXME: Is this true for all targets? + LLT Ty = MRI.getType(MI.getOperand(1).getReg()); + if (DL.isNonIntegralAddressSpace(Ty.getAddressSpace())) + break; + LLVM_FALLTHROUGH; + } case TargetOpcode::G_ADD: { // Output known-0 bits are known if clear or set in both the low clear bits // common to both LHS & RHS. For example, 8+(X<<3) is known to have the |
