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A64: Implement EXT

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This commit is contained in:
MerryMage 2018-07-15 17:47:32 +01:00
parent d50eaedaa7
commit 5563bbbd79
3 changed files with 5 additions and 5 deletions
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6
src/backend_x64/emit_x64_vector.cpp
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@ -722,14 +722,14 @@ void EmitX64::EmitVectorExtractLower(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm xmm_a = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm xmm_b = ctx.reg_alloc.UseScratchXmm(args[1]);
const Xbyak::Xmm xmm_b = ctx.reg_alloc.UseXmm(args[1]);
const u8 position = args[2].GetImmediateU8();
ASSERT(position % 8 == 0);
code.punpcklqdq(xmm_a, xmm_b);
code.psrldq(xmm_a, position / 8);
code.pslldq(xmm_b, (64 - position) / 8);
code.por(xmm_a, xmm_b);
code.movq(xmm_a, xmm_a);
ctx.reg_alloc.DefineValue(inst, xmm_a);
}

2
src/frontend/A64/decoder/a64.inc
View file

@ -523,7 +523,7 @@ INST(TRN2, "TRN2", "0Q001
INST(ZIP2, "ZIP2", "0Q001110zz0mmmmm011110nnnnnddddd")
// Data Processing - FP and SIMD - SIMD Extract
//INST(EXT, "EXT", "0Q101110000mmmmm0iiii0nnnnnddddd")
INST(EXT, "EXT", "0Q101110000mmmmm0iiii0nnnnnddddd")
// Data Processing - FP and SIMD - SIMD Copy
INST(DUP_elt_2, "DUP (element)", "0Q001110000iiiii000001nnnnnddddd")

2
src/frontend/A64/translate/impl/simd_extract.cpp
View file

@ -18,7 +18,7 @@ bool TranslatorVisitor::EXT(bool Q, Vec Vm, Imm<4> imm4, Vec Vn, Vec Vd) {
const IR::U128 lo = V(datasize, Vn);
const IR::U128 hi = V(datasize, Vm);
const IR::U128 result = ir.VectorExtract(lo, hi, position);
const IR::U128 result = datasize == 64 ? ir.VectorExtractLower(lo, hi, position) : ir.VectorExtract(lo, hi, position);
V(datasize, Vd, result);