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https://github.com/c64scene-ar/llvm-6502.git
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This patch contains the LLVM side of the fix of PR17239. This bug that happens because the /link (clang-cl.exe argument) is marked as "consume all remaining arguments". However, when inside a response file, /link should only consume all remaining arguments inside the response file where it is located, not the entire command line after expansion. My patch will change the semantics of the RemainingArgsClass kind to always consume only until the end of the response file when the option originally came from a response file. There are only two options in this class: dash dash (--) and /link. Reviewed By: rnk Differential Revision: http://reviews.llvm.org/D4899 Patch by Rafael Auler! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216280 91177308-0d34-0410-b5e6-96231b3b80d8
236 lines
6.7 KiB
C++
236 lines
6.7 KiB
C++
//===--- Option.cpp - Abstract Driver Options -----------------------------===//
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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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#include "llvm/Option/Option.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cassert>
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using namespace llvm;
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using namespace llvm::opt;
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Option::Option(const OptTable::Info *info, const OptTable *owner)
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: Info(info), Owner(owner) {
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// Multi-level aliases are not supported. This just simplifies option
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// tracking, it is not an inherent limitation.
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assert((!Info || !getAlias().isValid() || !getAlias().getAlias().isValid()) &&
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"Multi-level aliases are not supported.");
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if (Info && getAliasArgs()) {
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assert(getAlias().isValid() && "Only alias options can have alias args.");
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assert(getKind() == FlagClass && "Only Flag aliases can have alias args.");
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assert(getAlias().getKind() != FlagClass &&
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"Cannot provide alias args to a flag option.");
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}
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}
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Option::~Option() {
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}
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void Option::dump() const {
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llvm::errs() << "<";
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switch (getKind()) {
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#define P(N) case N: llvm::errs() << #N; break
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P(GroupClass);
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P(InputClass);
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P(UnknownClass);
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P(FlagClass);
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P(JoinedClass);
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P(SeparateClass);
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P(CommaJoinedClass);
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P(MultiArgClass);
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P(JoinedOrSeparateClass);
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P(JoinedAndSeparateClass);
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P(RemainingArgsClass);
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#undef P
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}
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if (Info->Prefixes) {
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llvm::errs() << " Prefixes:[";
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for (const char * const *Pre = Info->Prefixes; *Pre != nullptr; ++Pre) {
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llvm::errs() << '"' << *Pre << (*(Pre + 1) == nullptr ? "\"" : "\", ");
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}
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llvm::errs() << ']';
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}
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llvm::errs() << " Name:\"" << getName() << '"';
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const Option Group = getGroup();
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if (Group.isValid()) {
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llvm::errs() << " Group:";
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Group.dump();
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}
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const Option Alias = getAlias();
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if (Alias.isValid()) {
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llvm::errs() << " Alias:";
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Alias.dump();
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}
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if (getKind() == MultiArgClass)
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llvm::errs() << " NumArgs:" << getNumArgs();
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llvm::errs() << ">\n";
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}
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bool Option::matches(OptSpecifier Opt) const {
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// Aliases are never considered in matching, look through them.
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const Option Alias = getAlias();
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if (Alias.isValid())
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return Alias.matches(Opt);
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// Check exact match.
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if (getID() == Opt.getID())
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return true;
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const Option Group = getGroup();
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if (Group.isValid())
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return Group.matches(Opt);
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return false;
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}
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Arg *Option::accept(const ArgList &Args,
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unsigned &Index,
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unsigned ArgSize) const {
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const Option &UnaliasedOption = getUnaliasedOption();
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StringRef Spelling;
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// If the option was an alias, get the spelling from the unaliased one.
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if (getID() == UnaliasedOption.getID()) {
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Spelling = StringRef(Args.getArgString(Index), ArgSize);
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} else {
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Spelling = Args.MakeArgString(Twine(UnaliasedOption.getPrefix()) +
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Twine(UnaliasedOption.getName()));
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}
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switch (getKind()) {
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case FlagClass: {
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if (ArgSize != strlen(Args.getArgString(Index)))
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return nullptr;
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Arg *A = new Arg(UnaliasedOption, Spelling, Index++);
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if (getAliasArgs()) {
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const char *Val = getAliasArgs();
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while (*Val != '\0') {
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A->getValues().push_back(Val);
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// Move past the '\0' to the next argument.
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Val += strlen(Val) + 1;
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}
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}
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return A;
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}
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case JoinedClass: {
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const char *Value = Args.getArgString(Index) + ArgSize;
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return new Arg(UnaliasedOption, Spelling, Index++, Value);
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}
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case CommaJoinedClass: {
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// Always matches.
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const char *Str = Args.getArgString(Index) + ArgSize;
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Arg *A = new Arg(UnaliasedOption, Spelling, Index++);
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// Parse out the comma separated values.
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const char *Prev = Str;
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for (;; ++Str) {
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char c = *Str;
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if (!c || c == ',') {
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if (Prev != Str) {
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char *Value = new char[Str - Prev + 1];
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memcpy(Value, Prev, Str - Prev);
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Value[Str - Prev] = '\0';
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A->getValues().push_back(Value);
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}
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if (!c)
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break;
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Prev = Str + 1;
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}
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}
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A->setOwnsValues(true);
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return A;
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}
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case SeparateClass:
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// Matches iff this is an exact match.
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// FIXME: Avoid strlen.
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if (ArgSize != strlen(Args.getArgString(Index)))
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return nullptr;
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Index += 2;
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if (Index > Args.getNumInputArgStrings() ||
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Args.getArgString(Index - 1) == nullptr)
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return nullptr;
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return new Arg(UnaliasedOption, Spelling,
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Index - 2, Args.getArgString(Index - 1));
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case MultiArgClass: {
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// Matches iff this is an exact match.
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// FIXME: Avoid strlen.
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if (ArgSize != strlen(Args.getArgString(Index)))
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return nullptr;
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Index += 1 + getNumArgs();
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if (Index > Args.getNumInputArgStrings())
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return nullptr;
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Arg *A = new Arg(UnaliasedOption, Spelling, Index - 1 - getNumArgs(),
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Args.getArgString(Index - getNumArgs()));
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for (unsigned i = 1; i != getNumArgs(); ++i)
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A->getValues().push_back(Args.getArgString(Index - getNumArgs() + i));
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return A;
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}
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case JoinedOrSeparateClass: {
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// If this is not an exact match, it is a joined arg.
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// FIXME: Avoid strlen.
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if (ArgSize != strlen(Args.getArgString(Index))) {
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const char *Value = Args.getArgString(Index) + ArgSize;
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return new Arg(*this, Spelling, Index++, Value);
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}
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// Otherwise it must be separate.
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Index += 2;
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if (Index > Args.getNumInputArgStrings() ||
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Args.getArgString(Index - 1) == nullptr)
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return nullptr;
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return new Arg(UnaliasedOption, Spelling,
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Index - 2, Args.getArgString(Index - 1));
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}
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case JoinedAndSeparateClass:
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// Always matches.
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Index += 2;
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if (Index > Args.getNumInputArgStrings() ||
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Args.getArgString(Index - 1) == nullptr)
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return nullptr;
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return new Arg(UnaliasedOption, Spelling, Index - 2,
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Args.getArgString(Index - 2) + ArgSize,
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Args.getArgString(Index - 1));
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case RemainingArgsClass: {
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// Matches iff this is an exact match.
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// FIXME: Avoid strlen.
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if (ArgSize != strlen(Args.getArgString(Index)))
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return nullptr;
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Arg *A = new Arg(UnaliasedOption, Spelling, Index++);
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while (Index < Args.getNumInputArgStrings() &&
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Args.getArgString(Index) != nullptr)
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A->getValues().push_back(Args.getArgString(Index++));
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return A;
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}
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default:
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llvm_unreachable("Invalid option kind!");
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}
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}
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