diff options
Diffstat (limited to 'src/llvm_backend_proc.cpp')
| -rw-r--r-- | src/llvm_backend_proc.cpp | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/src/llvm_backend_proc.cpp b/src/llvm_backend_proc.cpp index eb6c89b85..27a6ec209 100644 --- a/src/llvm_backend_proc.cpp +++ b/src/llvm_backend_proc.cpp @@ -135,6 +135,10 @@ lbProcedure *lb_create_procedure(lbModule *m, Entity *entity, bool ignore_body) lb_add_attribute_to_proc(m, p->value, "naked"); } + if (!entity->Procedure.is_foreign && build_context.disable_red_zone) { + lb_add_attribute_to_proc(m, p->value, "noredzone"); + } + switch (p->inlining) { case ProcInlining_inline: lb_add_attribute_to_proc(m, p->value, "alwaysinline"); @@ -1402,14 +1406,23 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv, case BuiltinProc_read_cycle_counter: { - char const *name = "llvm.readcyclecounter"; - unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name)); - GB_ASSERT_MSG(id != 0, "Unable to find %s", name); - LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, nullptr, 0); - lbValue res = {}; - res.value = LLVMBuildCall(p->builder, ip, nullptr, 0, ""); res.type = tv.type; + + if (build_context.metrics.arch == TargetArch_arm64) { + LLVMTypeRef func_type = LLVMFunctionType(LLVMInt64TypeInContext(p->module->ctx), nullptr, 0, false); + bool has_side_effects = false; + LLVMValueRef the_asm = llvm_get_inline_asm(func_type, str_lit("mrs x9, cntvct_el0"), str_lit("=r"), has_side_effects); + GB_ASSERT(the_asm != nullptr); + res.value = LLVMBuildCall2(p->builder, func_type, the_asm, nullptr, 0, ""); + } else { + char const *name = "llvm.readcyclecounter"; + unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name)); + GB_ASSERT_MSG(id != 0, "Unable to find %s", name); + LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, nullptr, 0); + + res.value = LLVMBuildCall(p->builder, ip, nullptr, 0, ""); + } return res; } |