[AVX-512] Fix DecodeVPERMV3Mask to handle cases where the constant pool entry has a different type than the shuffle itself.

Summary: This is especially important for 32-bit targets with 64-bit shuff

[AVX-512] Fix DecodeVPERMV3Mask to handle cases where the constant pool entry has a different type than the shuffle itself.

Summary: This is especially important for 32-bit targets with 64-bit shuffle elements.This is similar to how PSHUFB and VPERMIL handle the same problem.

Reviewers: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25666

llvm-svn: 284451

show more ...

[X86][SSE] Cleaned up shuffle decode assertion messages

llvm-svn: 283050

[X86] Avoid "unused" warnings if no asserts

llvm-svn: 282732

[X86][SSE] Added common helper for shuffle mask constant pool decodes.

The shuffle mask decodes have a large amount of repeated code extracting/splitting mask values from Constant data.

This patch

[X86][SSE] Added common helper for shuffle mask constant pool decodes.

The shuffle mask decodes have a large amount of repeated code extracting/splitting mask values from Constant data.

This patch pulls all of this duplicated code into a single helper function to identify undef elements and combine/split constant integer data into the requested shuffle mask elements.

Updated PSHUFB/VPERMIL/VPERMIL2/VPPERM decoders to use it (VPERMV/VPERMV3 could be converted as well in the future).

llvm-svn: 282720

show more ...

[X86][AVX] Add support for target shuffle combining to VPERMILPS variable shuffle mask

Added AVX512F VPERMILPS shuffle decoding support

llvm-svn: 275270

[X86][AVX512] Fixed decoding of permd/permpd variable mask shuffles + enabled them for target shuffle combining

Corrected element mask masking to extract the bottom index bits (now matches the perm2

[X86][AVX512] Fixed decoding of permd/permpd variable mask shuffles + enabled them for target shuffle combining

Corrected element mask masking to extract the bottom index bits (now matches the perm2 implementation but for unary inputs).

llvm-svn: 274571

show more ...

Try a bit harder to remove the signed and unsigned comparison warning.
Hopefully this time it actually works and stays away.

llvm-svn: 272463

Compare to an unsigned literal to avoid a -Wsign-compare warning.

llvm-svn: 272459

[X86][XOP] Tidied up DecodeVPERMIL2PMask to more closely match DecodeVPERMILPMask.

llvm-svn: 271830

[X86][XOP] Added VPERMIL2PD/VPERMIL2PS shuffle mask comment decoding

llvm-svn: 271809

[X86][XOP] Support for VPPERM 2-input shuffle mask decoding

This patch adds support for decoding XOP VPPERM instruction when it represents a basic shuffle.

The mask decoding required the existing M

[X86][XOP] Support for VPPERM 2-input shuffle mask decoding

This patch adds support for decoding XOP VPPERM instruction when it represents a basic shuffle.

The mask decoding required the existing MCInstrLowering code to be updated to support binary shuffles - the implementation now matches what is done in X86InstrComments.cpp.

Differential Revision: http://reviews.llvm.org/D18441

llvm-svn: 265874

show more ...

[X86][AVX512] Fixed VPERMT2* shuffle mask decoding and enabled target shuffle combining.

Patch to add support for target shuffle combining of X86ISD::VPERMV3 nodes, including support for detecting u

[X86][AVX512] Fixed VPERMT2* shuffle mask decoding and enabled target shuffle combining.

Patch to add support for target shuffle combining of X86ISD::VPERMV3 nodes, including support for detecting unary shuffles.

This uncovered several issues with the X86ISD::VPERMV3 shuffle mask decoding of non-64 bit shuffle mask elements - the bit masking wasn't being correctly computed.

Removed non-constant pool mask decode path as we have no way of testing it right now.

Differential Revision: http://reviews.llvm.org/D17916

llvm-svn: 262809

show more ...

Fix spelling. NFCI.

llvm-svn: 262078

[X86][SSE] Improve PSHUFB shuffle mask decoding.

In cases where the PSHUFB shuffle mask is shared it might not be bitcasted to a vXi8 byte vector. This patch adds support for decoding these wider sh

[X86][SSE] Improve PSHUFB shuffle mask decoding.

In cases where the PSHUFB shuffle mask is shared it might not be bitcasted to a vXi8 byte vector. This patch adds support for decoding these wider shuffle masks from the ConstantPool.

The test case in question makes use of this to recognise the shuffle mask is an unary UNPCKL pattern and simplifies accordingly.

llvm-svn: 261201

show more ...

[X86] Move shuffle decoding for constant pool into the X86CodeGen library to remove a layering violation in the Util library.

llvm-svn: 256680