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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238126 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
NAKAMURA Takumi
2015-05-25 01:43:34 +00:00
parent f61fb0c9a7
commit 4d3b6d43cc
6 changed files with 88 additions and 92 deletions
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38
lib/Target/X86/Utils/X86ShuffleDecode.cpp
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@@ -35,7 +35,7 @@ void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
unsigned CountS = (Imm >> 6) & 3;
// CountS selects which input element to use.
unsigned InVal = 4+CountS;
unsigned InVal = 4 + CountS;
// CountD specifies which element of destination to update.
ShuffleMask[CountD] = InVal;
// ZMask zaps values, potentially overriding the CountD elt.
@@ -47,20 +47,20 @@ void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
// <3,1> or <6,7,2,3>
void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask) {
for (unsigned i = NElts/2; i != NElts; ++i)
ShuffleMask.push_back(NElts+i);
for (unsigned i = NElts / 2; i != NElts; ++i)
ShuffleMask.push_back(NElts + i);
for (unsigned i = NElts/2; i != NElts; ++i)
for (unsigned i = NElts / 2; i != NElts; ++i)
ShuffleMask.push_back(i);
}
// <0,2> or <0,1,4,5>
void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask) {
for (unsigned i = 0; i != NElts/2; ++i)
for (unsigned i = 0; i != NElts / 2; ++i)
ShuffleMask.push_back(i);
for (unsigned i = 0; i != NElts/2; ++i)
ShuffleMask.push_back(NElts+i);
for (unsigned i = 0; i != NElts / 2; ++i)
ShuffleMask.push_back(NElts + i);
}
void DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask) {
@@ -203,8 +203,8 @@ void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
unsigned NewImm = Imm;
for (unsigned l = 0; l != NumElts; l += NumLaneElts) {
// each half of a lane comes from different source
for (unsigned s = 0; s != NumElts*2; s += NumElts) {
for (unsigned i = 0; i != NumLaneElts/2; ++i) {
for (unsigned s = 0; s != NumElts * 2; s += NumElts) {
for (unsigned i = 0; i != NumLaneElts / 2; ++i) {
ShuffleMask.push_back(NewImm % NumLaneElts + s + l);
NewImm /= NumLaneElts;
}
@@ -226,9 +226,9 @@ void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask) {
unsigned NumLaneElts = NumElts / NumLanes;
for (unsigned l = 0; l != NumElts; l += NumLaneElts) {
for (unsigned i = l + NumLaneElts/2, e = l + NumLaneElts; i != e; ++i) {
ShuffleMask.push_back(i); // Reads from dest/src1
ShuffleMask.push_back(i+NumElts); // Reads from src/src2
for (unsigned i = l + NumLaneElts / 2, e = l + NumLaneElts; i != e; ++i) {
ShuffleMask.push_back(i); // Reads from dest/src1
ShuffleMask.push_back(i + NumElts); // Reads from src/src2
}
}
}
@@ -246,9 +246,9 @@ void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask) {
unsigned NumLaneElts = NumElts / NumLanes;
for (unsigned l = 0; l != NumElts; l += NumLaneElts) {
for (unsigned i = l, e = l + NumLaneElts/2; i != e; ++i) {
ShuffleMask.push_back(i); // Reads from dest/src1
ShuffleMask.push_back(i+NumElts); // Reads from src/src2
for (unsigned i = l, e = l + NumLaneElts / 2; i != e; ++i) {
ShuffleMask.push_back(i); // Reads from dest/src1
ShuffleMask.push_back(i + NumElts); // Reads from src/src2
}
}
}
@@ -258,11 +258,11 @@ void DecodeVPERM2X128Mask(MVT VT, unsigned Imm,
if (Imm & 0x88)
return; // Not a shuffle
unsigned HalfSize = VT.getVectorNumElements()/2;
unsigned HalfSize = VT.getVectorNumElements() / 2;
for (unsigned l = 0; l != 2; ++l) {
unsigned HalfBegin = ((Imm >> (l*4)) & 0x3) * HalfSize;
for (unsigned i = HalfBegin, e = HalfBegin+HalfSize; i != e; ++i)
unsigned HalfBegin = ((Imm >> (l * 4)) & 0x3) * HalfSize;
for (unsigned i = HalfBegin, e = HalfBegin + HalfSize; i != e; ++i)
ShuffleMask.push_back(i);
}
}
@@ -355,7 +355,7 @@ void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
/// 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);
ShuffleMask.push_back((Imm >> (2 * i)) & 3);
}
}