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Allow lowering for palignr instructions for mmx sized vectors. Add

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patterns to handle the lowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101331 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2010-04-15 01:40:20 +00:00
parent adf979900c
commit cff6f85454
2 changed files with 23 additions and 3 deletions
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4
lib/Target/X86/X86ISelLowering.cpp
View File

@ -7949,9 +7949,9 @@ bool X86TargetLowering::isNarrowingProfitable(EVT VT1, EVT VT2) const {
bool
X86TargetLowering::isShuffleMaskLegal(const SmallVectorImpl<int> &M,
EVT VT) const {
// Only do shuffles on 128-bit vector types for now.
// Very little shuffling can be done for 64-bit vectors right now.
if (VT.getSizeInBits() == 64)
return false;
return isPALIGNRMask(M, VT, Subtarget->hasSSSE3());
// FIXME: pshufb, blends, shifts.
return (VT.getVectorNumElements() == 2 ||

22
lib/Target/X86/X86InstrSSE.td
View File

@ -2915,6 +2915,7 @@ defm PSIGND : SS3I_binop_rm_int_32<0x0A, "psignd",
int_x86_ssse3_psign_d,
int_x86_ssse3_psign_d_128>;
// palignr patterns.
let Constraints = "$src1 = $dst" in {
def PALIGNR64rr : SS3AI<0x0F, MRMSrcReg, (outs VR64:$dst),
(ins VR64:$src1, VR64:$src2, i8imm:$src3),
@ -2935,7 +2936,6 @@ let Constraints = "$src1 = $dst" in {
[]>, OpSize;
}
// palignr patterns.
def : Pat<(int_x86_ssse3_palign_r VR64:$src1, VR64:$src2, (i8 imm:$src3)),
(PALIGNR64rr VR64:$src1, VR64:$src2, (BYTE_imm imm:$src3))>,
Requires<[HasSSSE3]>;
@ -2944,6 +2944,26 @@ def : Pat<(int_x86_ssse3_palign_r VR64:$src1,
(i8 imm:$src3)),
(PALIGNR64rm VR64:$src1, addr:$src2, (BYTE_imm imm:$src3))>,
Requires<[HasSSSE3]>;
def : Pat<(v1i64 (palign:$src3 VR64:$src1, VR64:$src2)),
(PALIGNR64rr VR64:$src2, VR64:$src1,
(SHUFFLE_get_palign_imm VR64:$src3))>,
Requires<[HasSSSE3]>;
def : Pat<(v2i32 (palign:$src3 VR64:$src1, VR64:$src2)),
(PALIGNR64rr VR64:$src2, VR64:$src1,
(SHUFFLE_get_palign_imm VR64:$src3))>,
Requires<[HasSSSE3]>;
def : Pat<(v2f32 (palign:$src3 VR64:$src1, VR64:$src2)),
(PALIGNR64rr VR64:$src2, VR64:$src1,
(SHUFFLE_get_palign_imm VR64:$src3))>,
Requires<[HasSSSE3]>;
def : Pat<(v4i16 (palign:$src3 VR64:$src1, VR64:$src2)),
(PALIGNR64rr VR64:$src2, VR64:$src1,
(SHUFFLE_get_palign_imm VR64:$src3))>,
Requires<[HasSSSE3]>;
def : Pat<(v8i8 (palign:$src3 VR64:$src1, VR64:$src2)),
(PALIGNR64rr VR64:$src2, VR64:$src1,
(SHUFFLE_get_palign_imm VR64:$src3))>,
Requires<[HasSSSE3]>;
def : Pat<(int_x86_ssse3_palign_r_128 VR128:$src1, VR128:$src2, (i8 imm:$src3)),
(PALIGNR128rr VR128:$src1, VR128:$src2, (BYTE_imm imm:$src3))>,