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Extra checks to reduce mem.zero calls

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This commit is contained in:
gingerBill
2019-02-06 13:47:52 +00:00
parent 0133dd9034
commit bc5c37ebb1
2 changed files with 11 additions and 7 deletions
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src/ir.cpp
+10 -6
View File
@@ -2740,12 +2740,16 @@ void ir_value_set_debug_location(irProcedure *proc, irValue *v) {
void ir_emit_zero_init(irProcedure *p, irValue *address, Ast *expr) { void ir_emit_zero_init(irProcedure *p, irValue *address, Ast *expr) {
gbAllocator a = ir_allocator(); gbAllocator a = ir_allocator();
Type *t = type_deref(ir_type(address)); Type *t = type_deref(ir_type(address));
auto args = array_make<irValue *>(a, 2); isize sz = type_size_of(t);
args[0] = ir_emit_conv(p, address, t_rawptr); if (!(gb_is_power_of_two(sz) && sz <= build_context.max_align)) {
args[1] = ir_const_int(type_size_of(t)); // TODO(bill): Is this a good idea?
AstPackage *pkg = get_core_package(p->module->info, str_lit("mem")); auto args = array_make<irValue *>(a, 2);
if (p->entity != nullptr && p->entity->token.string != "zero" && p->entity->pkg != pkg) { args[0] = ir_emit_conv(p, address, t_rawptr);
irValue *v = ir_emit_package_call(p, "mem", "zero", args, expr, ProcInlining_no_inline); args[1] = ir_const_int(type_size_of(t));
AstPackage *pkg = get_core_package(p->module->info, str_lit("mem"));
if (p->entity != nullptr && p->entity->token.string != "zero" && p->entity->pkg != pkg) {
irValue *v = ir_emit_package_call(p, "mem", "zero", args, expr, ProcInlining_no_inline);
}
} }
ir_emit(p, ir_instr_zero_init(p, address)); ir_emit(p, ir_instr_zero_init(p, address));
} }
src/ir_print.cpp
+1 -1
View File
@@ -1109,7 +1109,7 @@ void ir_print_instr(irFileBuffer *f, irModule *m, irValue *value) {
ir_print_exact_value(f, m, empty_exact_value, type); ir_print_exact_value(f, m, empty_exact_value, type);
ir_write_str_lit(f, ", "); ir_write_str_lit(f, ", ");
ir_print_type(f, m, type); ir_print_type(f, m, type);
ir_fprintf(f, "* %%%d", instr->ZeroInit.address->index); ir_fprintf(f, "* %%%d, align 1", instr->ZeroInit.address->index);
break; break;
} }