2017-02-22 09:23:18 +08:00
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//===- lib/MC/MCSectionWasm.cpp - Wasm Code Section Representation --------===//
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//
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2019-01-19 16:50:56 +08:00
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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2017-02-22 09:23:18 +08:00
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCSectionWasm.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCSymbol.h"
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2020-06-27 16:57:03 +08:00
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#include "llvm/MC/MCSymbolWasm.h"
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2017-02-22 09:23:18 +08:00
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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// Decides whether a '.section' directive
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// should be printed before the section name.
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[WebAssembly] clang-tidy (NFC)
Summary:
This patch fixes clang-tidy warnings on wasm-only files.
The list of checks used is:
`-*,clang-diagnostic-*,llvm-*,misc-*,-misc-unused-parameters,readability-identifier-naming,modernize-*`
(LLVM's default .clang-tidy list is the same except it does not have
`modernize-*`. But I've seen in multiple CLs in LLVM the modernize style
was recommended and code was fixed based on the style, so I added it as
well.)
The common fixes are:
- Variable names start with an uppercase letter
- Function names start with a lowercase letter
- Use `auto` when you use casts so the type is evident
- Use inline initialization for class member variables
- Use `= default` for empty constructors / destructors
- Use `using` in place of `typedef`
Reviewers: sbc100, tlively, aardappel
Subscribers: dschuff, sunfish, jgravelle-google, yurydelendik, kripken, MatzeB, mgorny, rupprecht, llvm-commits
Differential Revision: https://reviews.llvm.org/D57500
llvm-svn: 353075
2019-02-05 03:13:39 +08:00
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bool MCSectionWasm::shouldOmitSectionDirective(StringRef Name,
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2017-02-22 09:23:18 +08:00
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const MCAsmInfo &MAI) const {
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return MAI.shouldOmitSectionDirective(Name);
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}
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static void printName(raw_ostream &OS, StringRef Name) {
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if (Name.find_first_not_of("0123456789_."
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"abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ") == Name.npos) {
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OS << Name;
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return;
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}
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OS << '"';
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for (const char *B = Name.begin(), *E = Name.end(); B < E; ++B) {
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if (*B == '"') // Unquoted "
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OS << "\\\"";
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else if (*B != '\\') // Neither " or backslash
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OS << *B;
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else if (B + 1 == E) // Trailing backslash
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OS << "\\\\";
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else {
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OS << B[0] << B[1]; // Quoted character
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++B;
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}
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}
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OS << '"';
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}
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void MCSectionWasm::PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
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raw_ostream &OS,
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const MCExpr *Subsection) const {
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2020-04-16 06:49:05 +08:00
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if (shouldOmitSectionDirective(getName(), MAI)) {
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2020-04-16 06:49:05 +08:00
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OS << '\t' << getName();
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2017-02-22 09:23:18 +08:00
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if (Subsection) {
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OS << '\t';
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Subsection->print(OS, &MAI);
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}
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OS << '\n';
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return;
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}
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OS << "\t.section\t";
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2020-04-16 06:49:05 +08:00
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printName(OS, getName());
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2017-02-22 09:23:18 +08:00
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OS << ",\"";
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2019-02-20 06:56:19 +08:00
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if (IsPassive)
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2020-12-11 08:40:08 +08:00
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OS << "p";
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if (Group)
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OS << "G";
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2017-02-22 09:23:18 +08:00
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OS << '"';
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OS << ',';
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// If comment string is '@', e.g. as on ARM - use '%' instead
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if (MAI.getCommentString()[0] == '@')
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OS << '%';
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else
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OS << '@';
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// TODO: Print section type.
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2020-12-11 08:40:08 +08:00
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if (Group) {
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OS << ",";
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printName(OS, Group->getName());
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OS << ",comdat";
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}
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2017-02-22 09:23:18 +08:00
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if (isUnique())
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OS << ",unique," << UniqueID;
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OS << '\n';
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if (Subsection) {
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OS << "\t.subsection\t";
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Subsection->print(OS, &MAI);
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OS << '\n';
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}
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}
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bool MCSectionWasm::UseCodeAlign() const { return false; }
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bool MCSectionWasm::isVirtualSection() const { return false; }
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