emit_arm64_data_processing: Implement LogicalShift{Left,Right}64
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0692f1d40e
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adb18fd0a7
1 changed files with 50 additions and 8 deletions
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@ -321,10 +321,31 @@ void EmitIR<IR::Opcode::LogicalShiftLeft32>(oaknut::CodeGenerator& code, EmitCon
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template<>
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void EmitIR<IR::Opcode::LogicalShiftLeft64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
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(void)code;
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(void)ctx;
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(void)inst;
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ASSERT_FALSE("Unimplemented");
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auto args = ctx.reg_alloc.GetArgumentInfo(inst);
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if (args[1].IsImmediate()) {
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const u8 shift = args[1].GetImmediateU8();
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auto Xresult = ctx.reg_alloc.WriteX(inst);
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auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
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RegAlloc::Realize(Xresult, Xoperand);
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if (shift <= 63) {
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code.LSL(Xresult, Xoperand, shift);
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} else {
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code.MOV(Xresult, XZR);
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}
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} else {
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auto Xresult = ctx.reg_alloc.WriteX(inst);
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auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
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auto Xshift = ctx.reg_alloc.ReadX(args[1]);
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RegAlloc::Realize(Xresult, Xoperand, Xshift);
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ctx.reg_alloc.SpillFlags();
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code.AND(Xscratch0, Xshift, 0xff);
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code.LSL(Xresult, Xoperand, Xscratch0);
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code.CMP(Xscratch0, 64);
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code.CSEL(Xresult, Xresult, XZR, LT);
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}
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}
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template<>
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@ -430,10 +451,31 @@ void EmitIR<IR::Opcode::LogicalShiftRight32>(oaknut::CodeGenerator& code, EmitCo
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template<>
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void EmitIR<IR::Opcode::LogicalShiftRight64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
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(void)code;
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(void)ctx;
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(void)inst;
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ASSERT_FALSE("Unimplemented");
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auto args = ctx.reg_alloc.GetArgumentInfo(inst);
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if (args[1].IsImmediate()) {
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const u8 shift = args[1].GetImmediateU8();
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auto Xresult = ctx.reg_alloc.WriteX(inst);
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auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
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RegAlloc::Realize(Xresult, Xoperand);
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if (shift <= 63) {
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code.LSR(Xresult, Xoperand, shift);
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} else {
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code.MOV(Xresult, XZR);
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}
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} else {
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auto Xresult = ctx.reg_alloc.WriteX(inst);
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auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
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auto Xshift = ctx.reg_alloc.ReadX(args[1]);
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RegAlloc::Realize(Xresult, Xoperand, Xshift);
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ctx.reg_alloc.SpillFlags();
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code.AND(Xscratch0, Xshift, 0xff);
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code.LSR(Xresult, Xoperand, Xscratch0);
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code.CMP(Xscratch0, 64);
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code.CSEL(Xresult, Xresult, XZR, LT);
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}
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}
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template<>
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