}
}
-void DecodeSHUFPSMask(unsigned NElts, unsigned Imm,
- SmallVectorImpl<unsigned> &ShuffleMask) {
- // Part that reads from dest.
- for (unsigned i = 0; i != NElts/2; ++i) {
- ShuffleMask.push_back(Imm % NElts);
- Imm /= NElts;
- }
- // Part that reads from src.
- for (unsigned i = 0; i != NElts/2; ++i) {
- ShuffleMask.push_back(Imm % NElts + NElts);
- Imm /= NElts;
- }
-}
+void DecodeSHUFPMask(EVT VT, unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ unsigned NumElts = VT.getVectorNumElements();
-void DecodeUNPCKHPMask(unsigned NElts,
- SmallVectorImpl<unsigned> &ShuffleMask) {
- for (unsigned i = 0; i != NElts/2; ++i) {
- ShuffleMask.push_back(i+NElts/2); // Reads from dest
- ShuffleMask.push_back(i+NElts+NElts/2); // Reads from src
+ unsigned NumLanes = VT.getSizeInBits() / 128;
+ unsigned NumLaneElts = NumElts / NumLanes;
+
+ int NewImm = Imm;
+ for (unsigned l = 0; l < NumLanes; ++l) {
+ unsigned LaneStart = l * NumLaneElts;
+ // Part that reads from dest.
+ for (unsigned i = 0; i != NumLaneElts/2; ++i) {
+ ShuffleMask.push_back(NewImm % NumLaneElts + LaneStart);
+ NewImm /= NumLaneElts;
+ }
+ // Part that reads from src.
+ for (unsigned i = 0; i != NumLaneElts/2; ++i) {
+ ShuffleMask.push_back(NewImm % NumLaneElts + NumElts + LaneStart);
+ NewImm /= NumLaneElts;
+ }
+ if (NumLaneElts == 4) NewImm = Imm; // reload imm
}
}
-void DecodeUNPCKLPSMask(unsigned NElts,
- SmallVectorImpl<unsigned> &ShuffleMask) {
- DecodeUNPCKLPMask(MVT::getVectorVT(MVT::i32, NElts), ShuffleMask);
-}
+void DecodeUNPCKHPMask(EVT VT, SmallVectorImpl<unsigned> &ShuffleMask) {
+ unsigned NumElts = VT.getVectorNumElements();
-void DecodeUNPCKLPDMask(unsigned NElts,
- SmallVectorImpl<unsigned> &ShuffleMask) {
- DecodeUNPCKLPMask(MVT::getVectorVT(MVT::i64, NElts), ShuffleMask);
+ // Handle 128 and 256-bit vector lengths. AVX defines UNPCK* to operate
+ // independently on 128-bit lanes.
+ unsigned NumLanes = VT.getSizeInBits() / 128;
+ if (NumLanes == 0 ) NumLanes = 1; // Handle MMX
+ unsigned NumLaneElts = NumElts / NumLanes;
+
+ for (unsigned s = 0; s < NumLanes; ++s) {
+ unsigned Start = s * NumLaneElts + NumLaneElts/2;
+ unsigned End = s * NumLaneElts + NumLaneElts;
+ for (unsigned i = Start; i != End; ++i) {
+ ShuffleMask.push_back(i); // Reads from dest/src1
+ ShuffleMask.push_back(i+NumElts); // Reads from src/src2
+ }
+ }
}
/// DecodeUNPCKLPMask - This decodes the shuffle masks for unpcklps/unpcklpd
/// etc. VT indicates the type of the vector allowing it to handle different
/// datatypes and vector widths.
-void DecodeUNPCKLPMask(EVT VT,
- SmallVectorImpl<unsigned> &ShuffleMask) {
+void DecodeUNPCKLPMask(EVT VT, SmallVectorImpl<unsigned> &ShuffleMask) {
unsigned NumElts = VT.getVectorNumElements();
- // Handle vector lengths > 128 bits. Define a "section" as a set of
- // 128 bits. AVX defines UNPCK* to operate independently on 128-bit
- // sections.
- unsigned NumSections = VT.getSizeInBits() / 128;
- if (NumSections == 0 ) NumSections = 1; // Handle MMX
- unsigned NumSectionElts = NumElts / NumSections;
+ // Handle 128 and 256-bit vector lengths. AVX defines UNPCK* to operate
+ // independently on 128-bit lanes.
+ unsigned NumLanes = VT.getSizeInBits() / 128;
+ if (NumLanes == 0 ) NumLanes = 1; // Handle MMX
+ unsigned NumLaneElts = NumElts / NumLanes;
- unsigned Start = 0;
- unsigned End = NumSectionElts / 2;
- for (unsigned s = 0; s < NumSections; ++s) {
+ for (unsigned s = 0; s < NumLanes; ++s) {
+ unsigned Start = s * NumLaneElts;
+ unsigned End = s * NumLaneElts + NumLaneElts/2;
for (unsigned i = Start; i != End; ++i) {
- ShuffleMask.push_back(i); // Reads from dest/src1
- ShuffleMask.push_back(i+NumSectionElts); // Reads from src/src2
+ ShuffleMask.push_back(i); // Reads from dest/src1
+ ShuffleMask.push_back(i+NumElts); // Reads from src/src2
+ }
+ }
+}
+
+// DecodeVPERMILPSMask - Decodes VPERMILPS permutes for any 128-bit 32-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes and the mask of the first lane must
+// be the same of the second.
+void DecodeVPERMILPSMask(unsigned NumElts, unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ unsigned NumLanes = (NumElts*32)/128;
+ unsigned LaneSize = NumElts/NumLanes;
+
+ for (unsigned l = 0; l != NumLanes; ++l) {
+ for (unsigned i = 0; i != LaneSize; ++i) {
+ unsigned Idx = (Imm >> (i*2)) & 0x3 ;
+ ShuffleMask.push_back(Idx+(l*LaneSize));
+ }
+ }
+}
+
+// DecodeVPERMILPDMask - Decodes VPERMILPD permutes for any 128-bit 64-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes but the mask of the first lane can
+// be the different of the second (not like VPERMILPS).
+void DecodeVPERMILPDMask(unsigned NumElts, unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ unsigned NumLanes = (NumElts*64)/128;
+ unsigned LaneSize = NumElts/NumLanes;
+
+ for (unsigned l = 0; l < NumLanes; ++l) {
+ for (unsigned i = l*LaneSize; i < LaneSize*(l+1); ++i) {
+ unsigned Idx = (Imm >> i) & 0x1;
+ ShuffleMask.push_back(Idx+(l*LaneSize));
}
- // Process the next 128 bits.
- Start += NumSectionElts;
- End += NumSectionElts;
}
}
+void DecodeVPERM2F128Mask(EVT VT, unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ unsigned HalfSize = VT.getVectorNumElements()/2;
+ unsigned FstHalfBegin = (Imm & 0x3) * HalfSize;
+ unsigned SndHalfBegin = ((Imm >> 4) & 0x3) * HalfSize;
+
+ for (int i = FstHalfBegin, e = FstHalfBegin+HalfSize; i != e; ++i)
+ ShuffleMask.push_back(i);
+ for (int i = SndHalfBegin, e = SndHalfBegin+HalfSize; i != e; ++i)
+ ShuffleMask.push_back(i);
+}
+
+void DecodeVPERM2F128Mask(unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ // VPERM2F128 is used by any 256-bit EVT, but X86InstComments only
+ // has information about the instruction and not the types. So for
+ // instruction comments purpose, assume the 256-bit vector is v4i64.
+ return DecodeVPERM2F128Mask(MVT::v4i64, Imm, ShuffleMask);
+}
+
} // llvm namespace
projects / oota-llvm.git / blobdiff