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[code generation] basic to-llvm lowering

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This commit is contained in:
Philippe Tillet
2019-01-05 14:50:31 -05:00
parent f131ebb0bc
commit ec656af57c
23 changed files with 320 additions and 56 deletions
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38
lib/ir/instructions.cpp
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@@ -98,7 +98,6 @@ binary_operator *binary_operator::create_not(value *arg, const std::string &name
//===----------------------------------------------------------------------===//
// cmp_inst
cmp_inst::cmp_inst(type *ty, cmp_inst::pred_t pred, value *lhs, value *rhs, const std::string &name, instruction *next)
: instruction(ty, 2, name, next), pred_(pred) {
set_operand(0, lhs);
@@ -113,8 +112,6 @@ type* cmp_inst::make_cmp_result_type(type *ty){
}
bool cmp_inst::is_fp_predicate(pred_t pred) {
return pred >= pcmp::FIRST_FCMP_PREDICATE && pred <= pcmp::LAST_FCMP_PREDICATE;
}
@@ -124,7 +121,6 @@ bool cmp_inst::is_int_predicate(pred_t pred) {
}
// icmp_inst
icmp_inst* icmp_inst::create(pred_t pred, value *lhs, value *rhs, const std::string &name, instruction *next){
assert(is_int_predicate(pred));
type *res_ty = make_cmp_result_type(lhs->get_type());
@@ -132,7 +128,6 @@ icmp_inst* icmp_inst::create(pred_t pred, value *lhs, value *rhs, const std::str
}
// fcmp_inst
fcmp_inst* fcmp_inst::create(pred_t pred, value *lhs, value *rhs, const std::string &name, instruction *next){
assert(is_fp_predicate(pred));
type *res_ty = make_cmp_result_type(lhs->get_type());
@@ -195,7 +190,6 @@ cast_inst *cast_inst::create_integer_cast(value *arg, type *ty, bool is_signed,
// return_inst
return_inst::return_inst(context &ctx, value *ret_val, instruction *next)
: terminator_inst(type::get_void_ty(ctx), !!ret_val, "", next){
if(ret_val)
@@ -207,32 +201,32 @@ return_inst *return_inst::create(context &ctx, value *ret_val, instruction *next
}
// conditional/unconditional branch
// branch_inst
branch_inst* branch_inst::create(basic_block *dst, instruction *next) {
assert(dst && "Branch destination may not be null!");
return new uncond_branch_inst(dst, next);
}
branch_inst::branch_inst(basic_block *dst, instruction *next)
: terminator_inst(type::get_void_ty(dst->get_context()), 1, "", next){
branch_inst* branch_inst::create(value *cond, basic_block *if_dst, basic_block *else_dst, instruction *next) {
assert(cond->get_type()->is_integer_ty(1) && "May only branch on boolean predicates!");
return new cond_branch_inst(if_dst, else_dst, cond, next);
}
// uncond_branch_inst
uncond_branch_inst::uncond_branch_inst(basic_block *dst, instruction *next)
: branch_inst(type::get_void_ty(dst->get_context()), 1, "", next){
set_operand(0, dst);
}
branch_inst::branch_inst(basic_block *if_dst, basic_block *else_dst, value *cond, instruction *next)
: terminator_inst(type::get_void_ty(if_dst->get_context()), 3, "", next){
// cond_branch_inst
cond_branch_inst::cond_branch_inst(basic_block *if_dst, basic_block *else_dst, value *cond, instruction *next)
: branch_inst(type::get_void_ty(if_dst->get_context()), 3, "", next){
assert(cond->get_type()->is_integer_ty(1) && "May only branch on boolean predicates!");
set_operand(0, if_dst);
set_operand(1, else_dst);
set_operand(2, cond);
}
branch_inst* branch_inst::create(basic_block *dst, instruction *next) {
assert(dst && "Branch destination may not be null!");
return new branch_inst(dst, next);
}
branch_inst* branch_inst::create(value *cond, basic_block *if_dst, basic_block *else_dst, instruction *next) {
assert(cond->get_type()->is_integer_ty(1) && "May only branch on boolean predicates!");
return new branch_inst(if_dst, else_dst, cond, next);
}
//===----------------------------------------------------------------------===//
// getelementptr_inst classes
//===----------------------------------------------------------------------===//