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Driver: unify compiler-rt component selection 

Unify the component handling for compiler-rt.  The components are regularly
named, built up from:

  ${LIBRARY_PREFIX}clang_rt.${component}-${arch}[-${environment}]${LIBRARY_SUFFIX}

Unify the handling for all the various components, into a single path to link
against the various components in a number of places.  This reduces duplication
of the clang_rt library name construction logic.

llvm-svn: 225013
This commit is contained in:
Saleem Abdulrasool 2014-12-30 22:52:08 +00:00
parent 2e46ebe56f
commit 6815094f9b
1 changed files with 28 additions and 37 deletions
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65
clang/lib/Driver/Tools.cpp
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@ -2119,22 +2119,30 @@ static SmallString<128> getCompilerRTLibDir(const ToolChain &TC) {
return Res;
}
static SmallString<128> getCompilerRT(const ToolChain &TC, StringRef Component,
bool Shared = false,
const char *Env = "") {
bool IsOSWindows = TC.getTriple().isOSWindows();
StringRef Arch = getArchNameForCompilerRTLib(TC);
const char *Prefix = IsOSWindows ? "" : "lib";
const char *Suffix =
Shared ? (IsOSWindows ? ".dll" : ".so") : (IsOSWindows ? ".lib" : ".a");
SmallString<128> Path = getCompilerRTLibDir(TC);
llvm::sys::path::append(Path, Prefix + Twine("clang_rt.") + Component + "-" +
Arch + Env + Suffix);
return Path;
}
// This adds the static libclang_rt.builtins-arch.a directly to the command line
// FIXME: Make sure we can also emit shared objects if they're requested
// and available, check for possible errors, etc.
static void addClangRT(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
bool IsOSWindows = TC.getTriple().isOSWindows();
StringRef Arch = getArchNameForCompilerRTLib(TC);
const char *Prefix = IsOSWindows ? "" : "lib";
const char *Suffix = IsOSWindows ? ".lib" : ".a";
CmdArgs.push_back(Args.MakeArgString(getCompilerRT(TC, "builtins")));
SmallString<128> LibClangRT = getCompilerRTLibDir(TC);
llvm::sys::path::append(LibClangRT,
Prefix + Twine("clang_rt.builtins-") + Arch + Suffix);
CmdArgs.push_back(Args.MakeArgString(LibClangRT));
if (!IsOSWindows) {
if (!TC.getTriple().isOSWindows()) {
// FIXME: why do we link against gcc when we are using compiler-rt?
CmdArgs.push_back("-lgcc_s");
if (TC.getDriver().CCCIsCXX())
@ -2152,38 +2160,22 @@ static void addProfileRT(const ToolChain &TC, const ArgList &Args,
Args.hasArg(options::OPT_coverage)))
return;
SmallString<128> LibProfile = getCompilerRTLibDir(TC);
llvm::sys::path::append(LibProfile, Twine("libclang_rt.profile-") +
getArchNameForCompilerRTLib(TC) +
".a");
CmdArgs.push_back(Args.MakeArgString(LibProfile));
}
static SmallString<128> getSanitizerRTLibName(const ToolChain &TC,
StringRef Sanitizer,
bool Shared) {
// Sanitizer runtime has name "libclang_rt.<Sanitizer>-<ArchName>.{a,so}"
// (or "libclang_rt.<Sanitizer>-<ArchName>-android.so for Android)
const char *EnvSuffix =
TC.getTriple().getEnvironment() == llvm::Triple::Android ? "-android" : "";
SmallString<128> LibSanitizer = getCompilerRTLibDir(TC);
llvm::sys::path::append(LibSanitizer,
Twine("libclang_rt.") + Sanitizer + "-" +
getArchNameForCompilerRTLib(TC) + EnvSuffix +
(Shared ? ".so" : ".a"));
return LibSanitizer;
CmdArgs.push_back(Args.MakeArgString(getCompilerRT(TC, "profile")));
}
static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs, StringRef Sanitizer,
bool IsShared) {
SmallString<128> LibSanitizer = getSanitizerRTLibName(TC, Sanitizer, IsShared);
const char *Env = TC.getTriple().getEnvironment() == llvm::Triple::Android
? "-android"
: "";
// Static runtimes must be forced into executable, so we wrap them in
// whole-archive.
if (!IsShared)
CmdArgs.push_back("-whole-archive");
CmdArgs.push_back(Args.MakeArgString(LibSanitizer));
CmdArgs.push_back(Args.MakeArgString(getCompilerRT(TC, Sanitizer, IsShared,
Env)));
if (!IsShared)
CmdArgs.push_back("-no-whole-archive");
}
@ -2193,10 +2185,9 @@ static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs,
StringRef Sanitizer) {
SmallString<128> LibSanitizer = getSanitizerRTLibName(TC, Sanitizer, false);
if (llvm::sys::fs::exists(LibSanitizer + ".syms")) {
CmdArgs.push_back(
Args.MakeArgString("--dynamic-list=" + LibSanitizer + ".syms"));
SmallString<128> SanRT = getCompilerRT(TC, Sanitizer);
if (llvm::sys::fs::exists(SanRT + ".syms")) {
CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
return true;
}
return false;