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[FRONTEND] Semantic analysis refactor (#491)

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Moved dispatch.cc to semantic.py (@ptillet)
Integer signedness analysis was moved from C++ to python (@daadaada)
Cleaner frontend types (@daadaada)
Moved SSA construction to a separate object (@ptillet)


Co-authored-by: Yan Da <dyanab@connect.ust.hk>
This commit is contained in:
Philippe Tillet
2022-04-06 16:13:53 -07:00
committed by GitHub
parent 2bed6fc850
commit 9f08ecd684
19 changed files with 2174 additions and 1745 deletions
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4
lib/ir/instructions.cc
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@@ -377,8 +377,8 @@ cast_inst *cast_inst::create_integer_cast(value *arg, type *ty, bool is_signed,
unsigned arg_bits = arg_ty->get_scalar_ty()->get_integer_bitwidth();
unsigned dst_bits = ty->get_scalar_ty()->get_integer_bitwidth();
cast_op_t op = (arg_bits == dst_bits ? cast_op_t::BitCast :
(arg_bits > dst_bits ? cast_op_t::Trunc :
(is_signed ? cast_op_t::SExt : cast_op_t::ZExt)));
(arg_bits > dst_bits ? cast_op_t::Trunc :
(is_signed ? cast_op_t::SExt : cast_op_t::ZExt)));
return create(op, arg, ty, name, next);
}