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A64: Implement FRSQRTE (vector), single/double variant

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This commit is contained in:
MerryMage 2018-07-23 22:46:12 +01:00
parent b74d5520f9
commit 45dc5f74f3
6 changed files with 75 additions and 1 deletions
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45
src/backend_x64/emit_x64_vector_floating_point.cpp
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@ -10,7 +10,10 @@
#include "backend_x64/block_of_code.h"
#include "backend_x64/emit_x64.h"
#include "common/bit_util.h"
#include "common/fp/fpcr.h"
#include "common/fp/op.h"
#include "common/fp/util.h"
#include "common/mp.h"
#include "frontend/ir/basic_block.h"
#include "frontend/ir/microinstruction.h"
@ -222,6 +225,31 @@ static void EmitVectorOperation64(BlockOfCode& code, EmitContext& ctx, IR::Inst*
ctx.reg_alloc.DefineValue(inst, result);
}
template <typename Lambda>
inline void EmitOneArgumentFallback(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, Lambda lambda) {
const auto fn = static_cast<mp::equivalent_function_type_t<Lambda>*>(lambda);
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm arg1 = ctx.reg_alloc.UseXmm(args[0]);
ctx.reg_alloc.EndOfAllocScope();
ctx.reg_alloc.HostCall(nullptr);
constexpr u32 stack_space = 2 * 16;
code.sub(rsp, stack_space + ABI_SHADOW_SPACE);
code.lea(code.ABI_PARAM1, ptr[rsp + ABI_SHADOW_SPACE + 0 * 16]);
code.lea(code.ABI_PARAM2, ptr[rsp + ABI_SHADOW_SPACE + 1 * 16]);
code.mov(code.ABI_PARAM3.cvt32(), ctx.FPCR());
code.lea(code.ABI_PARAM4, code.ptr[code.r15 + code.GetJitStateInfo().offsetof_fpsr_exc]);
code.movaps(xword[code.ABI_PARAM2], arg1);
code.CallFunction(fn);
code.movaps(xmm0, xword[rsp + ABI_SHADOW_SPACE + 0 * 16]);
code.add(rsp, stack_space + ABI_SHADOW_SPACE);
ctx.reg_alloc.DefineValue(inst, xmm0);
}
void EmitX64::EmitFPVectorAbs16(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
@ -365,6 +393,23 @@ void EmitX64::EmitFPVectorPairedAddLower64(EmitContext& ctx, IR::Inst* inst) {
});
}
template<typename FPT>
static void EmitRSqrtEstimate(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
EmitOneArgumentFallback(code, ctx, inst, [](VectorArray<FPT>& result, const VectorArray<FPT>& operand, FP::FPCR fpcr, FP::FPSR& fpsr) {
for (size_t i = 0; i < result.size(); i++) {
result[i] = FP::FPRSqrtEstimate<FPT>(operand[i], fpcr, fpsr);
}
});
}
void EmitX64::EmitFPVectorRSqrtEstimate32(EmitContext& ctx, IR::Inst* inst) {
EmitRSqrtEstimate<u32>(code, ctx, inst);
}
void EmitX64::EmitFPVectorRSqrtEstimate64(EmitContext& ctx, IR::Inst* inst) {
EmitRSqrtEstimate<u64>(code, ctx, inst);
}
void EmitX64::EmitFPVectorS32ToSingle(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm xmm = ctx.reg_alloc.UseScratchXmm(args[0]);