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[AVX512] The AVX512 file only need subtract_subvector index 0 patterns where the source is 512-bits. The 256-bit source patterns were redundant with AVX. 

llvm-svn: 270356
This commit is contained in:
Craig Topper 2016-05-22 07:40:58 +00:00
parent a1041ff001
commit 5f3fef884f
1 changed files with 35 additions and 15 deletions
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50
llvm/lib/Target/X86/X86InstrAVX512.td
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@ -629,19 +629,9 @@ def VINSERTPSzrm: AVX512AIi8<0x21, MRMSrcMem, (outs VR128X:$dst),
// AVX-512 VECTOR EXTRACT
//---
multiclass vextract_for_size_first_position_lowering<X86VectorVTInfo From,
X86VectorVTInfo To> {
// A subvector extract from the first vector position is
// a subregister copy that needs no instruction.
def NAME # To.NumElts:
Pat<(To.VT (extract_subvector (From.VT From.RC:$src),(iPTR 0))),
(To.VT (EXTRACT_SUBREG (From.VT From.RC:$src), To.SubRegIdx))>;
}
multiclass vextract_for_size<int Opcode,
X86VectorVTInfo From, X86VectorVTInfo To,
PatFrag vextract_extract> :
vextract_for_size_first_position_lowering<From, To> {
PatFrag vextract_extract> {
let hasSideEffects = 0, ExeDomain = To.ExeDomain in {
// use AVX512_maskable_in_asm (AVX512_maskable can't be used due to
@ -704,9 +694,7 @@ multiclass vextract_for_size<int Opcode,
// Codegen pattern for the alternative types
multiclass vextract_for_size_lowering<string InstrStr, X86VectorVTInfo From,
X86VectorVTInfo To, PatFrag vextract_extract,
SDNodeXForm EXTRACT_get_vextract_imm, list<Predicate> p> :
vextract_for_size_first_position_lowering<From, To> {
SDNodeXForm EXTRACT_get_vextract_imm, list<Predicate> p> {
let Predicates = p in {
def : Pat<(vextract_extract:$ext (From.VT From.RC:$src1), (iPTR imm)),
(To.VT (!cast<Instruction>(InstrStr#"rr")
@ -794,9 +782,39 @@ defm : vextract_for_size_lowering<"VEXTRACTI64x4Z", v32i16_info, v16i16x_info,
defm : vextract_for_size_lowering<"VEXTRACTI64x4Z", v64i8_info, v32i8x_info,
vextract256_extract, EXTRACT_get_vextract256_imm, [HasAVX512]>;
// A 128-bit subvector extract from the first 256-bit vector position
// is a subregister copy that needs no instruction.
def : Pat<(v2i64 (extract_subvector (v8i64 VR512:$src), (iPTR 0))),
(v2i64 (EXTRACT_SUBREG (v8i64 VR512:$src), sub_xmm))>;
def : Pat<(v2f64 (extract_subvector (v8f64 VR512:$src), (iPTR 0))),
(v2f64 (EXTRACT_SUBREG (v8f64 VR512:$src), sub_xmm))>;
def : Pat<(v4i32 (extract_subvector (v16i32 VR512:$src), (iPTR 0))),
(v4i32 (EXTRACT_SUBREG (v16i32 VR512:$src), sub_xmm))>;
def : Pat<(v4f32 (extract_subvector (v16f32 VR512:$src), (iPTR 0))),
(v4f32 (EXTRACT_SUBREG (v16f32 VR512:$src), sub_xmm))>;
def : Pat<(v8i16 (extract_subvector (v32i16 VR512:$src), (iPTR 0))),
(v8i16 (EXTRACT_SUBREG (v32i16 VR512:$src), sub_xmm))>;
def : Pat<(v16i8 (extract_subvector (v64i8 VR512:$src), (iPTR 0))),
(v16i8 (EXTRACT_SUBREG (v64i8 VR512:$src), sub_xmm))>;
// A 256-bit subvector extract from the first 256-bit vector position
// is a subregister copy that needs no instruction.
def : Pat<(v4i64 (extract_subvector (v8i64 VR512:$src), (iPTR 0))),
(v4i64 (EXTRACT_SUBREG (v8i64 VR512:$src), sub_ymm))>;
def : Pat<(v4f64 (extract_subvector (v8f64 VR512:$src), (iPTR 0))),
(v4f64 (EXTRACT_SUBREG (v8f64 VR512:$src), sub_ymm))>;
def : Pat<(v8i32 (extract_subvector (v16i32 VR512:$src), (iPTR 0))),
(v8i32 (EXTRACT_SUBREG (v16i32 VR512:$src), sub_ymm))>;
def : Pat<(v8f32 (extract_subvector (v16f32 VR512:$src), (iPTR 0))),
(v8f32 (EXTRACT_SUBREG (v16f32 VR512:$src), sub_ymm))>;
def : Pat<(v16i16 (extract_subvector (v32i16 VR512:$src), (iPTR 0))),
(v16i16 (EXTRACT_SUBREG (v32i16 VR512:$src), sub_ymm))>;
def : Pat<(v32i8 (extract_subvector (v64i8 VR512:$src), (iPTR 0))),
(v32i8 (EXTRACT_SUBREG (v64i8 VR512:$src), sub_ymm))>;
let AddedComplexity = 25 in { // to give priority over vinsertf128rm
// A 128-bit subvector insert to the first 512-bit vector position
// is a subregister copy that needs no instruction.
let AddedComplexity = 25 in { // to give priority over vinsertf128rm
def : Pat<(v8i64 (insert_subvector undef, (v2i64 VR128X:$src), (iPTR 0))),
(INSERT_SUBREG (v8i64 (IMPLICIT_DEF)), VR128X:$src, sub_xmm)>;
def : Pat<(v8f64 (insert_subvector undef, (v2f64 VR128X:$src), (iPTR 0))),
@ -810,6 +828,8 @@ def : Pat<(v32i16 (insert_subvector undef, (v8i16 VR128X:$src), (iPTR 0))),
def : Pat<(v64i8 (insert_subvector undef, (v16i8 VR128X:$src), (iPTR 0))),
(INSERT_SUBREG (v64i8 (IMPLICIT_DEF)), VR128X:$src, sub_xmm)>;
// A 256-bit subvector insert to the first 512-bit vector position
// is a subregister copy that needs no instruction.
def : Pat<(v8i64 (insert_subvector undef, (v4i64 VR256X:$src), (iPTR 0))),
(INSERT_SUBREG (v8i64 (IMPLICIT_DEF)), VR256X:$src, sub_ymm)>;
def : Pat<(v8f64 (insert_subvector undef, (v4f64 VR256X:$src), (iPTR 0))),