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Mock up for the ability to enforce our own runtime.memset if necessary

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gingerBill
2022-07-16 16:12:16 +01:00
parent 157c87b2a2
commit 872d391cfb
1 changed files with 24 additions and 11 deletions
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src/llvm_backend_utility.cpp
+15 -2
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@@ -1,3 +1,5 @@
lbValue lb_lookup_runtime_procedure(lbModule *m, String const &name);
bool lb_is_type_aggregate(Type *t) { bool lb_is_type_aggregate(Type *t) {
t = base_type(t); t = base_type(t);
switch (t->kind) { switch (t->kind) {
@@ -60,6 +62,7 @@ void lb_mem_zero_ptr_internal(lbProcedure *p, LLVMValueRef ptr, LLVMValueRef len
} }
} }
char const *name = "llvm.memset"; char const *name = "llvm.memset";
if (is_inlinable) { if (is_inlinable) {
name = "llvm.memset.inline"; name = "llvm.memset.inline";
@@ -69,6 +72,7 @@ void lb_mem_zero_ptr_internal(lbProcedure *p, LLVMValueRef ptr, LLVMValueRef len
lb_type(p->module, t_rawptr), lb_type(p->module, t_rawptr),
lb_type(p->module, t_int) lb_type(p->module, t_int)
}; };
if (true || is_inlinable) {
unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name)); unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name));
GB_ASSERT_MSG(id != 0, "Unable to find %s.%s.%s", name, LLVMPrintTypeToString(types[0]), LLVMPrintTypeToString(types[1])); GB_ASSERT_MSG(id != 0, "Unable to find %s.%s.%s", name, LLVMPrintTypeToString(types[0]), LLVMPrintTypeToString(types[1]));
LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, types, gb_count_of(types)); LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, types, gb_count_of(types));
@@ -80,6 +84,17 @@ void lb_mem_zero_ptr_internal(lbProcedure *p, LLVMValueRef ptr, LLVMValueRef len
args[3] = LLVMConstInt(LLVMInt1TypeInContext(p->module->ctx), is_volatile, false); args[3] = LLVMConstInt(LLVMInt1TypeInContext(p->module->ctx), is_volatile, false);
LLVMBuildCall(p->builder, ip, args, gb_count_of(args), ""); LLVMBuildCall(p->builder, ip, args, gb_count_of(args), "");
} else {
LLVMValueRef ip = lb_lookup_runtime_procedure(p->module, str_lit("memset")).value;
LLVMValueRef args[3] = {};
args[0] = LLVMBuildPointerCast(p->builder, ptr, types[0], "");
args[1] = LLVMConstInt(LLVMInt32TypeInContext(p->module->ctx), 0, false);
args[2] = LLVMBuildIntCast2(p->builder, len, types[1], /*signed*/false, "");
LLVMBuildCall(p->builder, ip, args, gb_count_of(args), "");
}
} }
void lb_mem_zero_ptr(lbProcedure *p, LLVMValueRef ptr, Type *type, unsigned alignment) { void lb_mem_zero_ptr(lbProcedure *p, LLVMValueRef ptr, Type *type, unsigned alignment) {
@@ -1842,8 +1857,6 @@ void lb_set_wasm_export_attributes(LLVMValueRef value, String export_name) {
} }
lbValue lb_lookup_runtime_procedure(lbModule *m, String const &name);
lbAddr lb_handle_objc_find_or_register_selector(lbProcedure *p, String const &name) { lbAddr lb_handle_objc_find_or_register_selector(lbProcedure *p, String const &name) {
lbAddr *found = string_map_get(&p->module->objc_selectors, name); lbAddr *found = string_map_get(&p->module->objc_selectors, name);