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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-06-20 10:33:34 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-06-20 10:33:34 +0000 |
| commit | b233c0a5d2580d6d19e19d4624b239bbe5b69751 (patch) | |
| tree | 775ee37c5ad13d3ee7a590b87a08a8c4bd7fc1bf /llvm/lib/Target/X86/X86ISelLowering.cpp | |
| parent | b4a77fe83a84c6dfacbb35b7da9436b5c4df40d7 (diff) | |
| download | bcm5719-llvm-b233c0a5d2580d6d19e19d4624b239bbe5b69751.tar.gz bcm5719-llvm-b233c0a5d2580d6d19e19d4624b239bbe5b69751.zip | |
[X86][SSE] Dropped old INSERT_VECTOR_ELT lowering TODO
Target shuffle combining now supports the matching of INSERT_VECTOR_ELT/PINSRW/PINSRB for merging multiple insertions into shuffles/bitmasks.
llvm-svn: 305788
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 172eba0002d..a604a8bf789 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -14272,8 +14272,6 @@ SDValue X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op, // If we are inserting a element, see if we can do this more efficiently with // a blend shuffle with a rematerializable vector than a costly integer // insertion. - // TODO: pre-SSE41 targets will tend to use bit masking - this could still - // be beneficial if we are inserting several zeros and can combine the masks. if ((IsZeroElt || IsAllOnesElt) && Subtarget.hasSSE41() && NumElts <= 8) { SmallVector<int, 8> BlendMask; for (unsigned i = 0; i != NumElts; ++i) |
