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Support (void)foo for any type.

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This commit is contained in:
Christoffer Lerno
2023-02-13 13:52:48 +01:00
parent 5e457be605
commit 3cfef690d3
6 changed files with 161 additions and 32 deletions
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36
src/compiler/llvm_codegen_expr.c
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@@ -1185,6 +1185,31 @@ void llvm_emit_bool_to_intvec_cast(GenContext *c, BEValue *value, Type *to_type,
llvm_value_set(value, res, to_type);
}
void llvm_emit_void_cast(GenContext *c, Expr *expr, BEValue *value)
{
// Simple path
if (!IS_OPTIONAL(expr))
{
llvm_emit_expr_to_rvalue(c, expr);
llvm_value_set(value, NULL, type_void);
return;
}
PUSH_OPT();
LLVMBasicBlockRef after_void = llvm_basic_block_new(c, "end_block");
c->opt_var = NULL;
c->catch_block = after_void;
llvm_emit_expr_to_rvalue(c, expr);
llvm_emit_br(c, after_void);
// Ensure we are on a branch that is non-empty.
if (llvm_emit_check_block_branch(c))
{
c->current_block = NULL;
c->current_block_is_target = false;
}
POP_OPT();
llvm_emit_block(c, after_void);
}
void llvm_emit_cast(GenContext *c, CastKind cast_kind, Expr *expr, BEValue *value, Type *to_type, Type *from_type)
{
@@ -1221,6 +1246,8 @@ void llvm_emit_cast(GenContext *c, CastKind cast_kind, Expr *expr, BEValue *valu
llvm_value_bitcast(c, value, to_type);
llvm_value_rvalue(c, value);
return;
case CAST_VOID:
UNREACHABLE;
case CAST_EUINT:
case CAST_ERINT:
to_type = type_lowering(to_type);
@@ -1414,8 +1441,13 @@ void llvm_emit_cast(GenContext *c, CastKind cast_kind, Expr *expr, BEValue *valu
value->type = to_type;
}
static inline void gencontext_emit_cast_expr(GenContext *context, BEValue *be_value, Expr *expr)
static inline void llvm_emit_cast_expr(GenContext *context, BEValue *be_value, Expr *expr)
{
if (expr->cast_expr.kind == CAST_VOID)
{
llvm_emit_void_cast(context, exprptr(expr->cast_expr.expr), be_value);
return;
}
llvm_emit_exprid(context, be_value, expr->cast_expr.expr);
llvm_emit_cast(context,
expr->cast_expr.kind,
@@ -6235,7 +6267,7 @@ void llvm_emit_expr(GenContext *c, BEValue *value, Expr *expr)
gencontext_emit_expression_list_expr(c, value, expr);
return;
case EXPR_CAST:
gencontext_emit_cast_expr(c, value, expr);
llvm_emit_cast_expr(c, value, expr);
return;
case EXPR_BITACCESS:
llvm_emit_bitaccess(c, value, expr);