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Panic function that may be redefined. Trap and stacktrace builtins. Bug using builtin fixed. Fixes to using $$LINE and friends. Produces a stacktrace on error.

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This commit is contained in:
Christoffer Lerno
2022-03-18 08:57:15 +01:00
committed by Christoffer Lerno
parent 3490814d73
commit 6789fab93c
26 changed files with 433 additions and 311 deletions
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39
src/compiler/llvm_codegen_expr.c
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@@ -3590,8 +3590,7 @@ static inline void llvm_emit_force_unwrap_expr(GenContext *c, BEValue *be_value,
// TODO, we should add info about the error.
SourceSpan loc = expr->span;
File *file = source_file_by_id(loc.file_id);
llvm_emit_debug_output(c, "Runtime error force unwrap!", file->name, c->cur_func_decl->extname, loc.row ? loc.row : 1);
llvm_emit_call_intrinsic(c, intrinsic_id.trap, NULL, 0, NULL, 0);
llvm_emit_panic(c, "Runtime error force unwrap!", file->name, c->cur_func_decl->extname, loc.row ? loc.row : 1);
LLVMBuildUnreachable(c->builder);
c->current_block = NULL;
c->current_block_is_target = NULL;
@@ -4213,12 +4212,12 @@ static void llvm_emit_intrinsic_expr(GenContext *c, unsigned intrinsic, BEValue
LLVMValueRef arg_results[4];
for (unsigned i = 0; i < arguments; i++)
{
llvm_emit_expr(c, be_value, expr->call_expr.arguments[0]);
llvm_emit_expr(c, be_value, expr->call_expr.arguments[i]);
llvm_value_rvalue(c, be_value);
arg_results[i] = be_value->value;
}
LLVMTypeRef call_type = llvm_get_type(c, expr->type);
LLVMValueRef result = llvm_emit_call_intrinsic(c, intrinsic, &call_type, 1, arg_results, arguments);
LLVMTypeRef call_type = expr->type == type_void ? NULL : llvm_get_type(c, expr->type);
LLVMValueRef result = llvm_emit_call_intrinsic(c, intrinsic, &call_type, call_type ? 1 : 0, arg_results, arguments);
llvm_value_set(be_value, result, expr->type);
}
@@ -4377,7 +4376,11 @@ unsigned llvm_get_intrinsic(BuiltinFunction func)
switch (func)
{
case BUILTIN_NONE:
case BUILTIN_UNREACHABLE:
case BUILTIN_STACKTRACE:
UNREACHABLE
case BUILTIN_TRAP:
return intrinsic_id.trap;
case BUILTIN_CEIL:
return intrinsic_id.ceil;
case BUILTIN_TRUNC:
@@ -4431,6 +4434,25 @@ LLVMAtomicOrdering llvm_atomic_ordering(Atomicity atomicity)
void llvm_emit_builtin_call(GenContext *c, BEValue *result_value, Expr *expr)
{
BuiltinFunction func = exprptr(expr->call_expr.function)->builtin_expr.builtin;
if (func == BUILTIN_UNREACHABLE)
{
llvm_value_set(result_value, LLVMBuildUnreachable(c->builder), type_void);
c->current_block = NULL;
c->current_block_is_target = NULL;
LLVMBasicBlockRef after_unreachable = llvm_basic_block_new(c, "after.unreachable");
llvm_emit_block(c, after_unreachable);
return;
}
if (func == BUILTIN_STACKTRACE)
{
if (!c->debug.enable_stacktrace)
{
llvm_value_set(result_value, llvm_get_zero(c, type_voidptr), type_voidptr);
return;
}
llvm_value_set(result_value, llvm_emit_bitcast(c, c->debug.stack_slot, type_voidptr), type_voidptr);
return;
}
if (func == BUILTIN_VOLATILE_STORE)
{
BEValue value;
@@ -4482,11 +4504,18 @@ void llvm_add_call_attributes(GenContext *c, LLVMValueRef call_value, int start_
}
void llvm_emit_call_expr(GenContext *c, BEValue *result_value, Expr *expr)
{
if (expr->call_expr.is_builtin)
{
llvm_emit_builtin_call(c, result_value, expr);
return;
}
if (c->debug.stack_slot_row)
{
llvm_store(c, c->debug.stack_slot_row, llvm_const_int(c, type_uint, expr->span.row), type_abi_alignment(type_uint));
}
LLVMTypeRef func_type;
LLVMValueRef func;
BEValue temp_value;