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Indexing into a constant array / struct now works at compile time. Constants defined by indexing into another constant could fail codegen. Stdlib nolibc code bugs fixed.

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This commit is contained in:
Christoffer Lerno
2024-07-20 01:20:03 +02:00
parent 7f5757d66b
commit b25c573ae3
18 changed files with 315 additions and 119 deletions
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8
src/compiler/sema_decls.c
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@@ -798,7 +798,7 @@ static inline bool sema_analyse_bitstruct_member(SemaContext *context, Decl *par
if (!sema_analyse_expr(context, start)) return false;
// Check for negative, non integer or non const values.
if (!expr_is_const(start) || !type_is_integer(start->type) || int_is_neg(start->const_expr.ixx))
if (!sema_cast_const(start) || !type_is_integer(start->type) || int_is_neg(start->const_expr.ixx))
{
SEMA_ERROR(start, "This must be a constant non-negative integer value.");
return false;
@@ -819,7 +819,7 @@ static inline bool sema_analyse_bitstruct_member(SemaContext *context, Decl *par
{
// Analyse the end
if (!sema_analyse_expr(context, start)) return false;
if (!expr_is_const(end) || !type_is_integer(end->type) || int_is_neg(end->const_expr.ixx))
if (!sema_cast_const(end) || !type_is_integer(end->type) || int_is_neg(end->const_expr.ixx))
{
SEMA_ERROR(end, "This must be a constant non-negative integer value.");
return false;
@@ -2522,7 +2522,7 @@ static bool sema_analyse_attribute(SemaContext *context, Decl *decl, Attr *attr,
case ATTRIBUTE_IF:
if (!expr) RETURN_SEMA_ERROR(attr, "'@if' requires a boolean argument.");
if (!sema_analyse_expr(context, expr)) return false;
if (expr->type->canonical != type_bool || !expr_is_const(expr))
if (expr->type->canonical != type_bool || !sema_cast_const(expr))
{
RETURN_SEMA_ERROR(expr, "Expected a boolean compile time constant value.");
}
@@ -3626,6 +3626,7 @@ bool sema_analyse_var_decl(SemaContext *context, Decl *decl, bool local)
if (!type_info)
{
if (!sema_analyse_expr(context, init_expr)) return decl_poison(decl);
if (global_level_var || !type_is_abi_aggregate(init_expr->type)) sema_cast_const(init_expr);
if (global_level_var && !expr_is_constant_eval(init_expr, CONSTANT_EVAL_GLOBAL_INIT))
{
SEMA_ERROR(init_expr, "This expression cannot be evaluated at compile time.");
@@ -3731,6 +3732,7 @@ bool sema_analyse_var_decl(SemaContext *context, Decl *decl, bool local)
SEMA_ERROR(init_expr, "The expression must be a constant value.");
return decl_poison(decl);
}
if (global_level_var || !type_is_abi_aggregate(init_expr->type)) sema_cast_const(init_expr);
if (expr_is_const(init_expr))
{
init_expr->const_expr.is_hex = false;