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A64: Implement FMINNM (scalar)

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This commit is contained in:
MerryMage 2018-02-20 14:08:46 +00:00
parent 1c9804ea07
commit 0575e7421b
6 changed files with 98 additions and 1 deletions
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69
src/backend_x64/emit_x64_floating_point.cpp
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@ -551,6 +551,75 @@ void EmitX64::EmitFPMin64(EmitContext& ctx, IR::Inst* inst) {
});
}
void EmitX64::EmitFPMinNumeric32(EmitContext& ctx, IR::Inst* inst) {
FPThreeOp32(code, ctx, inst, [&](Xbyak::Xmm result, Xbyak::Xmm operand, Xbyak::Reg32 scratch, Xbyak::Label& end){
Xbyak::Label normal, normal_or_equal, result_is_result;
code.ucomiss(result, operand);
code.jnp(normal_or_equal);
// If operand == QNaN, result = result.
code.movd(scratch, operand);
code.shl(scratch, 1);
code.cmp(scratch, 0xff800000u);
code.jae(result_is_result);
// If operand == SNaN, let usual NaN code handle it.
code.cmp(scratch, 0xff000000u);
code.ja(normal);
// If result == SNaN, && operand != NaN, result = result.
code.movd(scratch, result);
code.shl(scratch, 1);
code.cmp(scratch, 0xff800000u);
code.jnae(result_is_result);
// If result == QNaN && operand != NaN, result = operand.
code.movaps(result, operand);
code.jmp(end);
code.L(result_is_result);
code.movaps(operand, result);
code.jmp(normal);
code.L(normal_or_equal);
code.jnz(normal);
code.orps(operand, result);
code.L(normal);
}, &Xbyak::CodeGenerator::minss);
}
void EmitX64::EmitFPMinNumeric64(EmitContext& ctx, IR::Inst* inst) {
FPThreeOp64(code, ctx, inst, [&](Xbyak::Xmm result, Xbyak::Xmm operand, Xbyak::Reg64 scratch, Xbyak::Label& end){
Xbyak::Label normal, normal_or_equal, result_is_result;
code.ucomisd(result, operand);
code.jnp(normal_or_equal);
// If operand == QNaN, result = result.
code.movq(scratch, operand);
code.shl(scratch, 1);
code.cmp(scratch, code.MConst(qword, 0xfff0'0000'0000'0000u));
code.jae(result_is_result);
// If operand == SNaN, let usual NaN code handle it.
code.cmp(scratch, code.MConst(qword, 0xffe0'0000'0000'0000u));
code.ja(normal);
// If result == SNaN, && operand != NaN, result = result.
code.movq(scratch, result);
code.shl(scratch, 1);
code.cmp(scratch, code.MConst(qword, 0xfff0'0000'0000'0000u));
code.jnae(result_is_result);
// If result == QNaN && operand != NaN, result = operand.
code.movaps(result, operand);
code.jmp(end);
code.L(result_is_result);
code.movaps(operand, result);
code.jmp(normal);
code.L(normal_or_equal);
code.jnz(normal);
code.orps(operand, result);
code.L(normal);
}, &Xbyak::CodeGenerator::minsd);
}
void EmitX64::EmitFPMul32(EmitContext& ctx, IR::Inst* inst) {
FPThreeOp32(code, ctx, inst, &Xbyak::CodeGenerator::mulss);
}