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Remove copy elision code

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This commit is contained in:
gingerBill
2022-11-22 15:49:27 +00:00
parent 6fa0679be9
commit 0a0db23b17
4 changed files with 7 additions and 57 deletions
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src/llvm_backend_stmt.cpp
-33
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@@ -1,31 +1,3 @@
lbCopyElisionHint lb_set_copy_elision_hint(lbProcedure *p, lbAddr const &addr, Ast *ast) {
lbCopyElisionHint prev = p->copy_elision_hint;
p->copy_elision_hint.used = false;
p->copy_elision_hint.ptr = {};
p->copy_elision_hint.ast = nullptr;
#if 0
if (addr.kind == lbAddr_Default && addr.addr.value != nullptr) {
p->copy_elision_hint.ptr = lb_addr_get_ptr(p, addr);
p->copy_elision_hint.ast = unparen_expr(ast);
}
#endif
return prev;
}
void lb_reset_copy_elision_hint(lbProcedure *p, lbCopyElisionHint prev_hint) {
p->copy_elision_hint = prev_hint;
}
lbValue lb_consume_copy_elision_hint(lbProcedure *p) {
lbValue return_ptr = p->copy_elision_hint.ptr;
p->copy_elision_hint.used = true;
p->copy_elision_hint.ptr = {};
p->copy_elision_hint.ast = nullptr;
return return_ptr;
}
void lb_build_constant_value_decl(lbProcedure *p, AstValueDecl *vd) {
if (vd == nullptr || vd->is_mutable) {
return;
@@ -1591,12 +1563,7 @@ void lb_build_assignment(lbProcedure *p, Array<lbAddr> &lvals, Slice<Ast *> cons
array_add(&inits, v);
}
} else {
auto prev_hint = lb_set_copy_elision_hint(p, lvals[inits.count], rhs);
lbValue init = lb_build_expr(p, rhs);
if (p->copy_elision_hint.used) {
lvals[inits.count] = {}; // zero lval
}
lb_reset_copy_elision_hint(p, prev_hint);
array_add(&inits, init);
}
}