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Add splat defaults for designated initialization #2441.

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Add ??? and +++= to list-precedence.
This commit is contained in:
Christoffer Lerno
2025-10-09 12:45:55 +02:00
parent e34a26422f
commit 0d85caf21c
10 changed files with 204 additions and 22 deletions
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64
src/compiler/llvm_codegen_expr.c
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@@ -49,7 +49,7 @@ static void llvm_emit_unary_expr(GenContext *c, BEValue *value, Expr *expr);
static inline void llvm_emit_memcmp(GenContext *c, BEValue *be_value, LLVMValueRef ptr, LLVMValueRef other_ptr, LLVMValueRef size);
static LLVMTypeRef llvm_find_inner_struct_type_for_coerce(GenContext *c, LLVMTypeRef struct_type, ByteSize dest_size);
static void llvm_expand_type_to_args(GenContext *context, Type *param_type, LLVMValueRef expand_ptr, LLVMValueRef *args, unsigned *arg_count_ref, AlignSize alignment);
static inline void llvm_emit_initialize_reference_designated_bitstruct(GenContext *c, BEValue *ref, Decl *bitstruct, Expr **elements);
static inline void llvm_emit_initialize_reference_designated_bitstruct(GenContext *c, BEValue *ref, Decl *bitstruct, Expr **elements, Expr *splat);
INLINE LLVMValueRef llvm_emit_bitstruct_value_update(GenContext *c, LLVMValueRef current_val, TypeSize bits, LLVMTypeRef bitstruct_type, Decl *member, LLVMValueRef val);
INLINE void llvm_emit_initialize_reference_bitstruct_array(GenContext *c, BEValue *ref, Decl *bitstruct, Expr** elements);
#define MAX_AGG 16
@@ -1824,12 +1824,21 @@ static void llvm_emit_initialize_designated_element(GenContext *c, BEValue *ref,
}
}
static inline void llvm_emit_initialize_reference_designated_bitstruct_array(GenContext *c, BEValue *ref, Decl *bitstruct, Expr **elements)
static inline void llvm_emit_initialize_reference_designated_bitstruct_array(GenContext *c, BEValue *ref, Decl *bitstruct, Expr **elements, Expr *splat)
{
LLVMTypeRef type = llvm_get_type(c, ref->type);
bool is_bitswap = bitstruct_requires_bitswap(bitstruct);
llvm_value_addr(c, ref);
llvm_store_zero(c, ref);
if (splat)
{
BEValue splat_val;
llvm_emit_expr(c, &splat_val, splat);
llvm_store(c, ref, &splat_val);
}
else
{
llvm_store_zero(c, ref);
}
AlignSize alignment = ref->alignment;
LLVMValueRef array_ptr = ref->value;
// Now walk through the elements.
@@ -1845,16 +1854,27 @@ static inline void llvm_emit_initialize_reference_designated_bitstruct_array(Gen
}
}
static inline void llvm_emit_initialize_reference_designated_bitstruct(GenContext *c, BEValue *ref, Decl *bitstruct, Expr **elements)
static inline void llvm_emit_initialize_reference_designated_bitstruct(GenContext *c, BEValue *ref, Decl *bitstruct, Expr **elements, Expr *splat)
{
Type *underlying_type = type_lowering(ref->type);
if (underlying_type->type_kind == TYPE_ARRAY)
{
llvm_emit_initialize_reference_designated_bitstruct_array(c, ref, bitstruct, elements);
llvm_emit_initialize_reference_designated_bitstruct_array(c, ref, bitstruct, elements, splat);
return;
}
LLVMTypeRef type = llvm_get_type(c, underlying_type);
LLVMValueRef data = LLVMConstNull(type);
LLVMValueRef data;
if (!splat)
{
data = LLVMConstNull(type);
}
else
{
BEValue splat_val;
llvm_emit_expr(c, &splat_val, splat);
llvm_value_rvalue(c, &splat_val);
data = splat_val.value;
}
TypeSize bits = type_bit_size(underlying_type);
// Now walk through the elements.
@@ -1877,13 +1897,15 @@ static inline void llvm_emit_initialize_reference_designated_bitstruct(GenContex
static inline void llvm_emit_initialize_reference_designated(GenContext *c, BEValue *ref, Expr *expr)
{
Expr **elements = expr->designated_init_list;
Expr **elements = expr->designated_init.list;
Expr *splat = expr->designated_init.splat;
ASSERT(vec_size(elements));
Type *type = type_flatten(expr->type);
ASSERT(type->type_kind != TYPE_SLICE);
if (type->type_kind == TYPE_BITSTRUCT)
{
llvm_emit_initialize_reference_designated_bitstruct(c, ref, type->decl, elements);
llvm_emit_initialize_reference_designated_bitstruct(c, ref, type->decl, elements, splat);
return;
}
@@ -1891,7 +1913,16 @@ static inline void llvm_emit_initialize_reference_designated(GenContext *c, BEVa
llvm_value_addr(c, ref);
// Clear the memory
llvm_store_zero(c, ref);
if (splat)
{
BEValue splat_value;
llvm_emit_expr(c, &splat_value, splat);
llvm_store(c, ref, &splat_value);
}
else
{
llvm_store_zero(c, ref);
}
// Now walk through the elements.
FOREACH(Expr *, designator, elements)
@@ -6369,8 +6400,19 @@ static inline void llvm_emit_vector_initializer_list(GenContext *c, BEValue *val
}
else
{
vec_value = llvm_get_zero_raw(llvm_type);
Expr **elements = expr->designated_init_list;
Expr **elements = expr->designated_init.list;
Expr *splat = expr->designated_init.splat;
if (splat)
{
BEValue splat_val;
llvm_emit_expr(c, &splat_val, splat);
llvm_value_rvalue(c, &splat_val);
vec_value = splat_val.value;
}
else
{
vec_value = llvm_get_zero_raw(llvm_type);
}
FOREACH(Expr *, designator, elements)
{