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| author | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2018-06-13 18:52:54 +0000 |
|---|---|---|
| committer | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2018-06-13 18:52:54 +0000 |
| commit | 7bec57300c799632d282d67916745b6d20a12e6f (patch) | |
| tree | 1f480c96f4729e1fa78241d79878ba0be1044d7a /llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp | |
| parent | 2d283830977b751564ca6a03ecc7c8260e72bafc (diff) | |
| download | bcm5719-llvm-7bec57300c799632d282d67916745b6d20a12e6f.tar.gz bcm5719-llvm-7bec57300c799632d282d67916745b6d20a12e6f.zip | |
[AMDGPU] Corrected computeKnownBits for V_PERM_B32
Differential Revision: https://reviews.llvm.org/D48133
llvm-svn: 334640
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp index 148de14dd5e..19106a5ae8d 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp @@ -4317,18 +4317,19 @@ void AMDGPUTargetLowering::computeKnownBitsForTargetNode( unsigned Sel = CMask->getZExtValue(); for (unsigned I = 0; I < 32; I += 8) { - unsigned ByteMask = 0xff << I; unsigned SelBits = Sel & 0xff; if (SelBits < 4) { - Known.One |= RHSKnown.One & ByteMask; - Known.Zero |= RHSKnown.Zero & ByteMask; + SelBits *= 8; + Known.One |= ((RHSKnown.One.getZExtValue() >> SelBits) & 0xff) << I; + Known.Zero |= ((RHSKnown.Zero.getZExtValue() >> SelBits) & 0xff) << I; } else if (SelBits < 7) { - Known.One |= LHSKnown.One & ByteMask; - Known.Zero |= LHSKnown.Zero & ByteMask; + SelBits = (SelBits & 3) * 8; + Known.One |= ((LHSKnown.One.getZExtValue() >> SelBits) & 0xff) << I; + Known.Zero |= ((LHSKnown.Zero.getZExtValue() >> SelBits) & 0xff) << I; } else if (SelBits == 0x0c) { - Known.Zero |= ByteMask; + Known.Zero |= 0xff << I; } else if (SelBits > 0x0c) { - Known.One |= ByteMask; + Known.One |= 0xff << I; } Sel >>= 8; } |
