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authorSimon Pilgrim <llvm-dev@redking.me.uk>2016-07-03 18:27:37 +0000
committerSimon Pilgrim <llvm-dev@redking.me.uk>2016-07-03 18:27:37 +0000
commita0d73835b204432b4b5c7e1dda272d13f81b091d (patch)
tree621a6347f78d57c35e681a1adfe8c47dbea4947b /llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
parent5080e7f56cc01b16351a1d5524caec2e84f32efc (diff)
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[X86][AVX512] Add support for 512-bit shuffle decoding of VPERMPD/VPERMQ
llvm-svn: 274468
Diffstat (limited to 'llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp')
-rw-r--r--llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp14
1 files changed, 8 insertions, 6 deletions
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
index 899080a..713595d 100644
--- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
+++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
@@ -382,12 +382,14 @@ void DecodeVPPERMMask(ArrayRef<uint64_t> RawMask,
}
}
- /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
-/// No VT provided since it only works on 256-bit, 4 element vectors.
-void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
- for (unsigned i = 0; i != 4; ++i) {
- ShuffleMask.push_back((Imm >> (2 * i)) & 3);
- }
+/// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
+void DecodeVPERMMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
+ assert((VT.is256BitVector() || VT.is512BitVector()) &&
+ (VT.getScalarSizeInBits() == 64) && "Unexpected vector value type");
+ unsigned NumElts = VT.getVectorNumElements();
+ for (unsigned l = 0; l != NumElts; l += 4)
+ for (unsigned i = 0; i != 4; ++i)
+ ShuffleMask.push_back(l + ((Imm >> (2 * i)) & 3));
}
void DecodeZeroExtendMask(MVT SrcScalarVT, MVT DstVT, SmallVectorImpl<int> &Mask) {