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LibJS+LibJIT: Add fast path for Int32 ^ Int32
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parent
3a5c177025
commit
0aeb83b03f
3 changed files with 56 additions and 1 deletions
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@ -525,6 +525,27 @@ struct Assembler {
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}
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}
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void bitwise_xor32(Operand dst, Operand src)
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{
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if (dst.is_register_or_memory() && src.type == Operand::Type::Reg) {
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emit_rex_for_mr(dst, src, REX_W::No);
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emit8(0x31);
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emit_modrm_mr(dst, src);
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} else if (dst.type == Operand::Type::Reg && src.type == Operand::Type::Imm && src.fits_in_i8()) {
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emit_rex_for_slash(dst, REX_W::No);
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emit8(0x83);
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emit_modrm_slash(6, dst);
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emit8(src.offset_or_immediate);
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} else if (dst.type == Operand::Type::Reg && src.type == Operand::Type::Imm && src.fits_in_i32()) {
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emit_rex_for_slash(dst, REX_W::No);
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emit8(0x81);
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emit_modrm_slash(6, dst);
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emit32(src.offset_or_immediate);
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} else {
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VERIFY_NOT_REACHED();
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}
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}
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void enter()
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{
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push(Operand::Register(Reg::RBP));
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