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IR: Add IR instruction VectorGetElement{8,16,32,64}

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This commit is contained in:
MerryMage 2018-01-24 15:54:56 +00:00
parent 28ccd85e5c
commit e00a522cba
4 changed files with 95 additions and 0 deletions
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73
src/backend_x64/emit_x64_vector.cpp
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@ -17,6 +17,79 @@ namespace BackendX64 {
using namespace Xbyak::util;
void EmitX64::EmitVectorGetElement8(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ASSERT(args[1].IsImmediate());
u8 index = args[1].GetImmediateU8();
Xbyak::Xmm source = ctx.reg_alloc.UseXmm(args[0]);
if (code->DoesCpuSupport(Xbyak::util::Cpu::tSSE41)) {
Xbyak::Reg32 dest = ctx.reg_alloc.ScratchGpr().cvt32();
code->pextrb(dest, source, index);
ctx.reg_alloc.DefineValue(inst, dest);
} else {
Xbyak::Reg32 dest = ctx.reg_alloc.ScratchGpr().cvt32();
code->pextrw(dest, source, index);
ctx.reg_alloc.DefineValue(inst, dest);
}
}
void EmitX64::EmitVectorGetElement16(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ASSERT(args[1].IsImmediate());
u8 index = args[1].GetImmediateU8();
Xbyak::Xmm source = ctx.reg_alloc.UseXmm(args[0]);
Xbyak::Reg32 dest = ctx.reg_alloc.ScratchGpr().cvt32();
code->pextrw(dest, source, index);
ctx.reg_alloc.DefineValue(inst, dest);
}
void EmitX64::EmitVectorGetElement32(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ASSERT(args[1].IsImmediate());
u8 index = args[1].GetImmediateU8();
Xbyak::Reg32 dest = ctx.reg_alloc.ScratchGpr().cvt32();
if (index == 0) {
Xbyak::Xmm source = ctx.reg_alloc.UseXmm(args[0]);
code->movd(dest, source);
} else if (code->DoesCpuSupport(Xbyak::util::Cpu::tSSE41)) {
Xbyak::Xmm source = ctx.reg_alloc.UseXmm(args[0]);
code->pextrd(dest, source, index);
} else {
Xbyak::Xmm source = ctx.reg_alloc.UseScratchXmm(args[0]);
code->pshufd(source, source, index);
code->movd(dest, source);
}
ctx.reg_alloc.DefineValue(inst, dest);
}
void EmitX64::EmitVectorGetElement64(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ASSERT(args[1].IsImmediate());
u8 index = args[1].GetImmediateU8();
Xbyak::Reg64 dest = ctx.reg_alloc.ScratchGpr().cvt64();
if (index == 0) {
Xbyak::Xmm source = ctx.reg_alloc.UseXmm(args[0]);
code->movq(dest, source);
} else if (code->DoesCpuSupport(Xbyak::util::Cpu::tSSE41)) {
Xbyak::Xmm source = ctx.reg_alloc.UseXmm(args[0]);
code->pextrq(dest, source, 1);
} else {
Xbyak::Xmm source = ctx.reg_alloc.UseScratchXmm(args[0]);
code->punpckhqdq(source, source);
code->movq(dest, source);
}
ctx.reg_alloc.DefineValue(inst, dest);
}
static void EmitVectorOperation(BlockOfCode* code, EmitContext& ctx, IR::Inst* inst, void (Xbyak::CodeGenerator::*fn)(const Xbyak::Mmx& mmx, const Xbyak::Operand&)) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);