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eae4673c2f
make_error_code(object_error) is slow because object::object_category() uses a ManagedStatic variable. But the real problem is that the function is called too frequently. This patch uses std::error_code() instead of object_error::success. In most cases, we return "success", so this patch reduces number of function calls to that function. http://reviews.llvm.org/D10333 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239409 91177308-0d34-0410-b5e6-96231b3b80d8
62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
//===- Error.cpp - system_error extensions for Object -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This defines a new error_category for the Object library.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/Error.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ManagedStatic.h"
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using namespace llvm;
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using namespace object;
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namespace {
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class _object_error_category : public std::error_category {
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public:
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const char* name() const LLVM_NOEXCEPT override;
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std::string message(int ev) const override;
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};
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}
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const char *_object_error_category::name() const LLVM_NOEXCEPT {
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return "llvm.object";
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}
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std::string _object_error_category::message(int EV) const {
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object_error E = static_cast<object_error>(EV);
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switch (E) {
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case object_error::arch_not_found:
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return "No object file for requested architecture";
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case object_error::invalid_file_type:
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return "The file was not recognized as a valid object file";
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case object_error::parse_failed:
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return "Invalid data was encountered while parsing the file";
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case object_error::unexpected_eof:
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return "The end of the file was unexpectedly encountered";
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case object_error::bitcode_section_not_found:
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return "Bitcode section not found in object file";
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case object_error::macho_small_load_command:
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return "Mach-O load command with size < 8 bytes";
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case object_error::macho_load_segment_too_many_sections:
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return "Mach-O segment load command contains too many sections";
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case object_error::macho_load_segment_too_small:
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return "Mach-O segment load command size is too small";
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}
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llvm_unreachable("An enumerator of object_error does not have a message "
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"defined.");
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}
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static ManagedStatic<_object_error_category> error_category;
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const std::error_category &object::object_category() {
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return *error_category;
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}
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