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added debug and error messages

This commit is contained in:
Sven Vogel 2024-05-27 15:56:44 +02:00
parent 92f4708ce7
commit e01d4c4808
4 changed files with 128 additions and 24 deletions
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6
src/llvm/backend.c
View File

@ -1,4 +1,5 @@
#include <assert.h>
#include <codegen/backend.h> #include <codegen/backend.h>
#include <llvm-c/Core.h> #include <llvm-c/Core.h>
#include <llvm-c/TargetMachine.h> #include <llvm-c/TargetMachine.h>
@ -8,16 +9,20 @@
#include <llvm/parser.h> #include <llvm/parser.h>
Target create_native_target() { Target create_native_target() {
DEBUG("creating native target...");
Target target; Target target;
target.triple.str = LLVMGetDefaultTargetTriple(); target.triple.str = LLVMGetDefaultTargetTriple();
target.triple.allocation = LLVM; target.triple.allocation = LLVM;
assert(target.triple.str != NULL);
target.cpu.str = LLVMGetHostCPUName(); target.cpu.str = LLVMGetHostCPUName();
target.cpu.allocation = LLVM; target.cpu.allocation = LLVM;
assert(target.cpu.str != NULL);
target.features.str = LLVMGetHostCPUFeatures(); target.features.str = LLVMGetHostCPUFeatures();
target.features.allocation = LLVM; target.features.allocation = LLVM;
assert(target.features.str != NULL);
target.opt = LLVMCodeGenLevelDefault; target.opt = LLVMCodeGenLevelDefault;
target.reloc = LLVMRelocDefault; target.reloc = LLVMRelocDefault;
@ -31,6 +36,7 @@ Target create_target_from_config() {
} }
static void delete_string(String string) { static void delete_string(String string) {
DEBUG("deleting string...");
switch (string.allocation) { switch (string.allocation) {
case LLVM: case LLVM:
LLVMDisposeMessage(string.str); LLVMDisposeMessage(string.str);

67
src/llvm/parser.c
View File

@ -4,6 +4,7 @@
#include <llvm-c/Target.h> #include <llvm-c/Target.h>
#include <llvm-c/TargetMachine.h> #include <llvm-c/TargetMachine.h>
#include <llvm-c/Types.h> #include <llvm-c/Types.h>
#include <llvm/backend.h>
#include <llvm/parser.h> #include <llvm/parser.h>
#include <llvm/types.h> #include <llvm/types.h>
#include <llvm/variables.h> #include <llvm/variables.h>
@ -11,52 +12,81 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <sys/log.h>
#include "llvm/backend.h" #define EXPORT_IR 1
BackendError export_IR(LLVMBackendCompileUnit* unit, const Target* target) {
DEBUG("exporting module to LLVM-IR...");
BackendError export_IR(LLVMBackendCompileUnit* unit) {
BackendError err = SUCCESS; BackendError err = SUCCESS;
// convert module to LLVM-IR
char* ir = LLVMPrintModuleToString(unit->module); char* ir = LLVMPrintModuleToString(unit->module);
FILE* output = fopen("module.ll", "w"); // construct file name
char* filename = alloca(strlen(target->name.str) + 2);
sprintf(filename, "%s.ll", target->name.str);
INFO("Writing LLVM-IR to %s", filename);
DEBUG("opening file...");
FILE* output = fopen(filename, "w");
if (output == NULL) { if (output == NULL) {
ERROR("unable to open file: %s", filename);
err = new_backend_impl_error(Implementation, NULL, err = new_backend_impl_error(Implementation, NULL,
"unable to open file for writing"); "unable to open file for writing");
LLVMDisposeMessage(ir); LLVMDisposeMessage(ir);
} }
fprintf(output, "%s", ir); DEBUG("printing LLVM-IR to file...");
size_t bytes = fprintf(output, "%s", ir);
// flush and close output file
fflush(output); fflush(output);
fclose(output); fclose(output);
INFO("%ld bytes written to %s", bytes, filename);
// clean up LLVM-IR string
LLVMDisposeMessage(ir); LLVMDisposeMessage(ir);
return err; return err;
} }
BackendError export_object(LLVMBackendCompileUnit* unit, const Target* target) { BackendError export_object(LLVMBackendCompileUnit* unit, const Target* target) {
DEBUG("exporting object file...");
INFO("Using target (%s): %s with features: %s", target->name.str,
target->triple.str, target->features.str);
LLVMTargetRef llvm_target = NULL; LLVMTargetRef llvm_target = NULL;
char* error = NULL; char* error = NULL;
DEBUG("creating target...");
if (LLVMGetTargetFromTriple(target->triple.str, &llvm_target, &error) != if (LLVMGetTargetFromTriple(target->triple.str, &llvm_target, &error) !=
0) { 0) {
BackendError err = ERROR("failed to create target machine: %s", error);
new_backend_impl_error(Implementation, NULL, strdup(error)); BackendError err = new_backend_impl_error(
Implementation, NULL, "unable to create target machine");
LLVMDisposeMessage(error); LLVMDisposeMessage(error);
return err; return err;
} }
DEBUG("Creating target machine...");
LLVMTargetMachineRef target_machine = LLVMCreateTargetMachine( LLVMTargetMachineRef target_machine = LLVMCreateTargetMachine(
llvm_target, target->triple.str, target->cpu.str, target->features.str, llvm_target, target->triple.str, target->cpu.str, target->features.str,
target->opt, target->reloc, target->model); target->opt, target->reloc, target->model);
LLVMCodeGenFileType file_type = LLVMObjectFile; LLVMCodeGenFileType file_type = LLVMObjectFile;
DEBUG("Generating code...");
if (LLVMTargetMachineEmitToFile(target_machine, unit->module, "output", if (LLVMTargetMachineEmitToFile(target_machine, unit->module, "output",
file_type, &error) != 0) { file_type, &error) != 0) {
ERROR("failed to emit code: %s", error);
BackendError err = BackendError err =
new_backend_impl_error(Implementation, NULL, strdup(error)); new_backend_impl_error(Implementation, NULL, "failed to emit code");
LLVMDisposeMessage(error); LLVMDisposeMessage(error);
return err; return err;
} }
@ -65,6 +95,7 @@ BackendError export_object(LLVMBackendCompileUnit* unit, const Target* target) {
} }
void list_available_targets() { void list_available_targets() {
DEBUG("initializing all available targets...");
LLVMInitializeAllTargetInfos(); LLVMInitializeAllTargetInfos();
printf("Available targets:\n"); printf("Available targets:\n");
@ -86,21 +117,32 @@ void list_available_targets() {
} }
BackendError export_module(LLVMBackendCompileUnit* unit, const Target* target) { BackendError export_module(LLVMBackendCompileUnit* unit, const Target* target) {
DEBUG("exporting module...");
BackendError err = SUCCESS; BackendError err = SUCCESS;
export_object(unit, target); export_object(unit, target);
if (EXPORT_IR) {
export_IR(unit, target);
} else {
DEBUG("not exporting LLVM-IR");
}
return err; return err;
} }
BackendError parse_module(const Module* module, void**) { BackendError parse_module(const Module* module, void**) {
DEBUG("generating code for module %p", module);
if (module == NULL) { if (module == NULL) {
ERROR("no module for codegen");
return new_backend_impl_error(Implementation, NULL, "no module"); return new_backend_impl_error(Implementation, NULL, "no module");
} }
LLVMBackendCompileUnit* unit = malloc(sizeof(LLVMBackendCompileUnit)); LLVMBackendCompileUnit* unit = malloc(sizeof(LLVMBackendCompileUnit));
// we start with a LLVM module // we start with a LLVM module
DEBUG("creating LLVM context and module");
unit->context = LLVMContextCreate(); unit->context = LLVMContextCreate();
unit->module = LLVMModuleCreateWithNameInContext("gemstone application", unit->module = LLVMModuleCreateWithNameInContext("gemstone application",
unit->context); unit->context);
@ -109,6 +151,8 @@ BackendError parse_module(const Module* module, void**) {
BackendError err = new_backend_error(Success); BackendError err = new_backend_error(Success);
DEBUG("generating code...");
err = impl_types(unit, global_scope, module->types); err = impl_types(unit, global_scope, module->types);
// NOTE: functions of boxes are not stored in the box itself, // NOTE: functions of boxes are not stored in the box itself,
// thus for a box we only implement the type // thus for a box we only implement the type
@ -116,11 +160,6 @@ BackendError parse_module(const Module* module, void**) {
err = impl_global_variables(unit, global_scope, module->variables); err = impl_global_variables(unit, global_scope, module->variables);
char* err_msg = NULL;
if (LLVMPrintModuleToFile(unit->module, "out.s", &err_msg)) {
err = new_backend_impl_error(Implementation, NULL, err_msg);
}
Target target = create_native_target(); Target target = create_native_target();
export_module(unit, &target); export_module(unit, &target);
@ -138,6 +177,7 @@ BackendError parse_module(const Module* module, void**) {
} }
LLVMGlobalScope* new_global_scope() { LLVMGlobalScope* new_global_scope() {
DEBUG("creating global scope...");
LLVMGlobalScope* scope = malloc(sizeof(LLVMGlobalScope)); LLVMGlobalScope* scope = malloc(sizeof(LLVMGlobalScope));
scope->functions = g_hash_table_new(g_str_hash, g_str_equal); scope->functions = g_hash_table_new(g_str_hash, g_str_equal);
@ -149,6 +189,7 @@ LLVMGlobalScope* new_global_scope() {
LLVMLocalScope* new_local_scope(LLVMGlobalScope* global_scope, LLVMLocalScope* new_local_scope(LLVMGlobalScope* global_scope,
LLVMLocalScope* parent_scope) { LLVMLocalScope* parent_scope) {
DEBUG("creating local scope...");
LLVMLocalScope* scope = malloc(sizeof(LLVMLocalScope)); LLVMLocalScope* scope = malloc(sizeof(LLVMLocalScope));
scope->variables = g_hash_table_new(g_str_hash, g_str_equal); scope->variables = g_hash_table_new(g_str_hash, g_str_equal);
@ -160,11 +201,13 @@ LLVMLocalScope* new_local_scope(LLVMGlobalScope* global_scope,
} }
void delete_local_scope(LLVMLocalScope* scope) { void delete_local_scope(LLVMLocalScope* scope) {
DEBUG("deleting global scope...");
g_hash_table_unref(scope->variables); g_hash_table_unref(scope->variables);
free(scope); free(scope);
} }
void delete_global_scope(LLVMGlobalScope* scope) { void delete_global_scope(LLVMGlobalScope* scope) {
DEBUG("deleting global scope...");
g_hash_table_unref(scope->functions); g_hash_table_unref(scope->functions);
g_hash_table_unref(scope->types); g_hash_table_unref(scope->types);
g_hash_table_unref(scope->variables); g_hash_table_unref(scope->variables);

51
src/llvm/types.c
View File

@ -1,21 +1,28 @@
#include <codegen/backend.h> #include <codegen/backend.h>
#include <llvm-c/Core.h> #include <llvm-c/Core.h>
#include <llvm-c/Types.h> #include <llvm-c/Types.h>
#include <llvm/parser.h>
#include <llvm/types.h> #include <llvm/types.h>
#include <set/types.h> #include <set/types.h>
#include <llvm/parser.h> #include <sys/log.h>
#define BASE_BYTES 4
#define BITS_PER_BYTE 8
BackendError impl_primtive_type(LLVMBackendCompileUnit* unit, BackendError impl_primtive_type(LLVMBackendCompileUnit* unit,
PrimitiveType primtive, PrimitiveType primtive,
LLVMTypeRef* llvm_type) { LLVMTypeRef* llvm_type) {
switch (primtive) { switch (primtive) {
case Int: case Int:
DEBUG("implementing primtive integral type...");
*llvm_type = LLVMInt32TypeInContext(unit->context); *llvm_type = LLVMInt32TypeInContext(unit->context);
break; break;
case Float: case Float:
DEBUG("implementing primtive float type...");
*llvm_type = LLVMFloatTypeInContext(unit->context); *llvm_type = LLVMFloatTypeInContext(unit->context);
break; break;
default: default:
PANIC("invalid primitive type");
break; break;
} }
@ -24,8 +31,9 @@ BackendError impl_primtive_type(LLVMBackendCompileUnit* unit,
BackendError impl_integral_type(LLVMBackendCompileUnit* unit, Scale scale, BackendError impl_integral_type(LLVMBackendCompileUnit* unit, Scale scale,
LLVMTypeRef* llvm_type) { LLVMTypeRef* llvm_type) {
LLVMTypeRef integral_type = size_t bits = (int)(4 * scale) * BITS_PER_BYTE;
LLVMIntTypeInContext(unit->context, (int)(4 * scale) * 8); DEBUG("implementing integral type of size: %ld", bits);
LLVMTypeRef integral_type = LLVMIntTypeInContext(unit->context, bits);
*llvm_type = integral_type; *llvm_type = integral_type;
@ -34,9 +42,12 @@ BackendError impl_integral_type(LLVMBackendCompileUnit* unit, Scale scale,
BackendError impl_float_type(LLVMBackendCompileUnit* unit, Scale scale, BackendError impl_float_type(LLVMBackendCompileUnit* unit, Scale scale,
LLVMTypeRef* llvm_type) { LLVMTypeRef* llvm_type) {
DEBUG("implementing floating point...");
LLVMTypeRef float_type = NULL; LLVMTypeRef float_type = NULL;
switch ((int)(scale * 4)) { size_t bytes = (int)(scale * BASE_BYTES);
DEBUG("requested float of bytes: %ld", bytes);
switch (bytes) {
case 2: case 2:
float_type = LLVMHalfTypeInContext(unit->context); float_type = LLVMHalfTypeInContext(unit->context);
break; break;
@ -50,6 +61,8 @@ BackendError impl_float_type(LLVMBackendCompileUnit* unit, Scale scale,
float_type = LLVMFP128TypeInContext(unit->context); float_type = LLVMFP128TypeInContext(unit->context);
break; break;
default: default:
ERROR("invalid floating point size: %ld bit",
bytes * BITS_PER_BYTE);
break; break;
} }
@ -65,6 +78,7 @@ BackendError impl_float_type(LLVMBackendCompileUnit* unit, Scale scale,
BackendError impl_composite_type(LLVMBackendCompileUnit* unit, BackendError impl_composite_type(LLVMBackendCompileUnit* unit,
CompositeType* composite, CompositeType* composite,
LLVMTypeRef* llvm_type) { LLVMTypeRef* llvm_type) {
DEBUG("implementing composite type...");
BackendError err = SUCCESS; BackendError err = SUCCESS;
switch (composite->primitive) { switch (composite->primitive) {
@ -75,12 +89,14 @@ BackendError impl_composite_type(LLVMBackendCompileUnit* unit,
if (composite->sign == Signed) { if (composite->sign == Signed) {
err = impl_float_type(unit, composite->scale, llvm_type); err = impl_float_type(unit, composite->scale, llvm_type);
} else { } else {
ERROR("unsgined floating point not supported");
err = new_backend_impl_error( err = new_backend_impl_error(
Implementation, composite->nodePtr, Implementation, composite->nodePtr,
"unsigned floating-point not supported"); "unsigned floating-point not supported");
} }
break; break;
default: default:
PANIC("invalid primitive kind: %ld", composite->primitive);
break; break;
} }
@ -97,6 +113,7 @@ BackendError impl_box_type(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
BackendError get_type_impl(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope, BackendError get_type_impl(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
Type* gemstone_type, LLVMTypeRef* llvm_type) { Type* gemstone_type, LLVMTypeRef* llvm_type) {
DEBUG("retrieving type implementation...");
BackendError err = BackendError err =
new_backend_impl_error(Implementation, gemstone_type->nodePtr, new_backend_impl_error(Implementation, gemstone_type->nodePtr,
"No type implementation covers type"); "No type implementation covers type");
@ -118,6 +135,9 @@ BackendError get_type_impl(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
err = err =
impl_box_type(unit, scope, &gemstone_type->impl.box, llvm_type); impl_box_type(unit, scope, &gemstone_type->impl.box, llvm_type);
break; break;
default:
PANIC("invalid type kind: %ld", gemstone_type->kind);
break;
} }
return err; return err;
@ -125,6 +145,7 @@ BackendError get_type_impl(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
BackendError impl_box_type(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope, BackendError impl_box_type(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
BoxType* box, LLVMTypeRef* llvm_type) { BoxType* box, LLVMTypeRef* llvm_type) {
DEBUG("implementing box type...");
GHashTableIter iterator; GHashTableIter iterator;
g_hash_table_iter_init(&iterator, box->member); g_hash_table_iter_init(&iterator, box->member);
@ -135,8 +156,11 @@ BackendError impl_box_type(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
GArray* members = g_array_new(FALSE, FALSE, sizeof(LLVMTypeRef)); GArray* members = g_array_new(FALSE, FALSE, sizeof(LLVMTypeRef));
DEBUG("implementing box members...");
while (g_hash_table_iter_next(&iterator, &key, &val) != FALSE) { while (g_hash_table_iter_next(&iterator, &key, &val) != FALSE) {
Type* member_type = ((BoxMember*) val)->type; Type* member_type = ((BoxMember*)val)->type;
DEBUG("implementing member: %s ", ((BoxMember*)val)->name);
LLVMTypeRef llvm_type = NULL; LLVMTypeRef llvm_type = NULL;
err = get_type_impl(unit, scope, member_type, &llvm_type); err = get_type_impl(unit, scope, member_type, &llvm_type);
@ -147,6 +171,7 @@ BackendError impl_box_type(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
g_array_append_val(members, llvm_type); g_array_append_val(members, llvm_type);
} }
DEBUG("implemented %ld members", members->len);
if (err.kind == Success) { if (err.kind == Success) {
*llvm_type = *llvm_type =
@ -162,6 +187,7 @@ BackendError impl_reference_type(LLVMBackendCompileUnit* unit,
LLVMGlobalScope* scope, LLVMGlobalScope* scope,
ReferenceType reference, ReferenceType reference,
LLVMTypeRef* llvm_type) { LLVMTypeRef* llvm_type) {
DEBUG("implementing reference type...");
BackendError err = SUCCESS; BackendError err = SUCCESS;
LLVMTypeRef type = NULL; LLVMTypeRef type = NULL;
err = get_type_impl(unit, scope, reference, &type); err = get_type_impl(unit, scope, reference, &type);
@ -176,6 +202,7 @@ BackendError impl_reference_type(LLVMBackendCompileUnit* unit,
BackendError impl_type(LLVMBackendCompileUnit* unit, Type* gemstone_type, BackendError impl_type(LLVMBackendCompileUnit* unit, Type* gemstone_type,
const char* alias, LLVMGlobalScope* scope) { const char* alias, LLVMGlobalScope* scope) {
BackendError err = SUCCESS; BackendError err = SUCCESS;
DEBUG("implementing type of kind: %ld as %s", gemstone_type->kind, alias);
LLVMTypeRef llvm_type = NULL; LLVMTypeRef llvm_type = NULL;
err = get_type_impl(unit, scope, gemstone_type, &llvm_type); err = get_type_impl(unit, scope, gemstone_type, &llvm_type);
@ -189,6 +216,7 @@ BackendError impl_type(LLVMBackendCompileUnit* unit, Type* gemstone_type,
BackendError impl_types(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope, BackendError impl_types(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
GHashTable* types) { GHashTable* types) {
DEBUG("implementing given types of %p", types);
GHashTableIter iterator; GHashTableIter iterator;
g_hash_table_iter_init(&iterator, types); g_hash_table_iter_init(&iterator, types);
@ -211,6 +239,7 @@ BackendError impl_types(LLVMBackendCompileUnit* unit, LLVMGlobalScope* scope,
BackendError get_primitive_default_value(PrimitiveType type, BackendError get_primitive_default_value(PrimitiveType type,
LLVMTypeRef llvm_type, LLVMTypeRef llvm_type,
LLVMValueRef* llvm_value) { LLVMValueRef* llvm_value) {
DEBUG("building primitive %ld default value", type);
switch (type) { switch (type) {
case Int: case Int:
*llvm_value = LLVMConstIntOfString(llvm_type, "0", 10); *llvm_value = LLVMConstIntOfString(llvm_type, "0", 10);
@ -219,6 +248,7 @@ BackendError get_primitive_default_value(PrimitiveType type,
*llvm_value = LLVMConstRealOfString(llvm_type, "0"); *llvm_value = LLVMConstRealOfString(llvm_type, "0");
break; break;
default: default:
ERROR("invalid primitive type: %ld", type);
return new_backend_impl_error(Implementation, NULL, return new_backend_impl_error(Implementation, NULL,
"unknown primitive type"); "unknown primitive type");
} }
@ -229,6 +259,7 @@ BackendError get_primitive_default_value(PrimitiveType type,
BackendError get_composite_default_value(CompositeType* composite, BackendError get_composite_default_value(CompositeType* composite,
LLVMTypeRef llvm_type, LLVMTypeRef llvm_type,
LLVMValueRef* llvm_value) { LLVMValueRef* llvm_value) {
DEBUG("building composite default value");
BackendError err = SUCCESS; BackendError err = SUCCESS;
switch (composite->primitive) { switch (composite->primitive) {
@ -245,6 +276,7 @@ BackendError get_composite_default_value(CompositeType* composite,
} }
break; break;
default: default:
ERROR("invalid primitive type: %ld", composite->primitive);
break; break;
} }
@ -253,6 +285,7 @@ BackendError get_composite_default_value(CompositeType* composite,
BackendError get_reference_default_value(LLVMTypeRef llvm_type, BackendError get_reference_default_value(LLVMTypeRef llvm_type,
LLVMValueRef* llvm_value) { LLVMValueRef* llvm_value) {
DEBUG("building reference default value");
*llvm_value = LLVMConstPointerNull(llvm_type); *llvm_value = LLVMConstPointerNull(llvm_type);
return SUCCESS; return SUCCESS;
@ -261,6 +294,7 @@ BackendError get_reference_default_value(LLVMTypeRef llvm_type,
BackendError get_box_default_value(LLVMBackendCompileUnit* unit, BackendError get_box_default_value(LLVMBackendCompileUnit* unit,
LLVMGlobalScope* scope, BoxType* type, LLVMGlobalScope* scope, BoxType* type,
LLVMValueRef* llvm_value) { LLVMValueRef* llvm_value) {
DEBUG("building box default value...");
GHashTableIter iterator; GHashTableIter iterator;
g_hash_table_iter_init(&iterator, type->member); g_hash_table_iter_init(&iterator, type->member);
@ -282,8 +316,10 @@ BackendError get_box_default_value(LLVMBackendCompileUnit* unit,
} }
} }
DEBUG("build %ld member default values", constants->len);
*llvm_value = LLVMConstStructInContext( *llvm_value = LLVMConstStructInContext(
unit->context, (LLVMValueRef*) constants->data, constants->len, 0); unit->context, (LLVMValueRef*)constants->data, constants->len, 0);
g_array_free(constants, FALSE); g_array_free(constants, FALSE);
@ -318,6 +354,9 @@ BackendError get_type_default_value(LLVMBackendCompileUnit* unit,
err = get_box_default_value(unit, scope, &gemstone_type->impl.box, err = get_box_default_value(unit, scope, &gemstone_type->impl.box,
llvm_value); llvm_value);
break; break;
default:
PANIC("invalid type kind: %ld", gemstone_type->kind);
break;
} }
return err; return err;

28
src/llvm/variables.c
View File

@ -5,11 +5,13 @@
#include <llvm/types.h> #include <llvm/types.h>
#include <llvm/variables.h> #include <llvm/variables.h>
#include <set/types.h> #include <set/types.h>
#include <sys/log.h>
BackendError impl_global_declaration(LLVMBackendCompileUnit* unit, BackendError impl_global_declaration(LLVMBackendCompileUnit* unit,
LLVMGlobalScope* scope, LLVMGlobalScope* scope,
VariableDeclaration* decl, VariableDeclaration* decl,
const char* name) { const char* name) {
DEBUG("implementing global declaration: ", name);
BackendError err = SUCCESS; BackendError err = SUCCESS;
LLVMTypeRef llvm_type = NULL; LLVMTypeRef llvm_type = NULL;
err = get_type_impl(unit, scope, &decl->type, &llvm_type); err = get_type_impl(unit, scope, &decl->type, &llvm_type);
@ -18,12 +20,14 @@ BackendError impl_global_declaration(LLVMBackendCompileUnit* unit,
return err; return err;
} }
DEBUG("creating global variable...");
LLVMValueRef global = LLVMAddGlobal(unit->module, llvm_type, name); LLVMValueRef global = LLVMAddGlobal(unit->module, llvm_type, name);
LLVMValueRef initial_value = NULL; LLVMValueRef initial_value = NULL;
err = get_type_default_value(unit, scope, &decl->type, &initial_value); err = get_type_default_value(unit, scope, &decl->type, &initial_value);
if (err.kind == Success) { if (err.kind == Success) {
DEBUG("setting default value...");
LLVMSetInitializer(global, initial_value); LLVMSetInitializer(global, initial_value);
g_hash_table_insert(scope->variables, (gpointer)name, global); g_hash_table_insert(scope->variables, (gpointer)name, global);
} }
@ -32,9 +36,9 @@ BackendError impl_global_declaration(LLVMBackendCompileUnit* unit,
} }
BackendError impl_global_definiton(LLVMBackendCompileUnit* unit, BackendError impl_global_definiton(LLVMBackendCompileUnit* unit,
LLVMGlobalScope* scope, LLVMGlobalScope* scope,
VariableDefiniton* def, VariableDefiniton* def, const char* name) {
const char* name) { DEBUG("implementing global definition: %s", name);
BackendError err = SUCCESS; BackendError err = SUCCESS;
LLVMTypeRef llvm_type = NULL; LLVMTypeRef llvm_type = NULL;
err = get_type_impl(unit, scope, &def->declaration.type, &llvm_type); err = get_type_impl(unit, scope, &def->declaration.type, &llvm_type);
@ -43,13 +47,16 @@ BackendError impl_global_definiton(LLVMBackendCompileUnit* unit,
return err; return err;
} }
DEBUG("creating global variable...");
LLVMValueRef global = LLVMAddGlobal(unit->module, llvm_type, name); LLVMValueRef global = LLVMAddGlobal(unit->module, llvm_type, name);
// FIXME: resolve initializer expression! // FIXME: resolve initializer expression!
LLVMValueRef initial_value = NULL; LLVMValueRef initial_value = NULL;
err = get_type_default_value(unit, scope, &def->declaration.type, &initial_value); err = get_type_default_value(unit, scope, &def->declaration.type,
&initial_value);
if (err.kind == Success) { if (err.kind == Success) {
DEBUG("setting default value");
LLVMSetInitializer(global, initial_value); LLVMSetInitializer(global, initial_value);
g_hash_table_insert(scope->variables, (gpointer)name, global); g_hash_table_insert(scope->variables, (gpointer)name, global);
} }
@ -68,13 +75,16 @@ BackendError impl_global_variable(LLVMBackendCompileUnit* unit,
unit, scope, &gemstone_var->impl.declaration, alias); unit, scope, &gemstone_var->impl.declaration, alias);
break; break;
case VariableKindDefinition: case VariableKindDefinition:
err = impl_global_definiton( err = impl_global_definiton(unit, scope,
unit, scope, &gemstone_var->impl.definiton, alias); &gemstone_var->impl.definiton, alias);
break; break;
case VariableKindBoxMember: case VariableKindBoxMember:
err = new_backend_impl_error(Implementation, gemstone_var->nodePtr, err = new_backend_impl_error(Implementation, gemstone_var->nodePtr,
"member variable cannot be "); "member variable cannot be ");
break; break;
default:
PANIC("invalid variable kind: %ld", gemstone_var->kind);
break;
} }
return err; return err;
@ -83,6 +93,7 @@ BackendError impl_global_variable(LLVMBackendCompileUnit* unit,
BackendError impl_global_variables(LLVMBackendCompileUnit* unit, BackendError impl_global_variables(LLVMBackendCompileUnit* unit,
LLVMGlobalScope* scope, LLVMGlobalScope* scope,
GHashTable* variables) { GHashTable* variables) {
DEBUG("implementing global variables...");
GHashTableIter iterator; GHashTableIter iterator;
g_hash_table_iter_init(&iterator, variables); g_hash_table_iter_init(&iterator, variables);
@ -91,6 +102,7 @@ BackendError impl_global_variables(LLVMBackendCompileUnit* unit,
BackendError err; BackendError err;
size_t variable_count = 0;
while (g_hash_table_iter_next(&iterator, &key, &val) != FALSE) { while (g_hash_table_iter_next(&iterator, &key, &val) != FALSE) {
err = err =
impl_global_variable(unit, (Variable*)val, (const char*)key, scope); impl_global_variable(unit, (Variable*)val, (const char*)key, scope);
@ -98,7 +110,11 @@ BackendError impl_global_variables(LLVMBackendCompileUnit* unit,
if (err.kind != Success) { if (err.kind != Success) {
break; break;
} }
variable_count++;
} }
DEBUG("implemented %ld global variables", variable_count);
return err; return err;
} }