D/ldc
1
0
Fork 0
mirror of https://github.com/xomboverlord/ldc.git synced 2026-01-13 03:13:13 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Hide obsucre LLVM flags on versions that support it.

Browse Source 
The idea is to hide any flags that an end user is unlikely
to need so that the -help output gets clearer. Some of the
flags are also downright confusing, as they seem similar
to unrelated D concepts. The hidden flags are still
available using -help-hidden.

Unfortunately, this is only possible on LLVM 3.3+.
This commit is contained in:
David Nadlinger
2013-10-15 01:15:59 +02:00
parent 90d0f6c12a
commit fd012bb002
1 changed files with 56 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
driver/main.cpp
View File

@@ -141,6 +141,59 @@ static void initFromString(char*& dest, const cl::opt<std::string>& src) {
}
}
#if LDC_LLVM_VER >= 303
static void hide(llvm::StringMap<cl::Option *>& map, const char* name) {
// Check if option exists first for resilience against LLVM changes
// between versions.
if (map.count(name))
map[name]->setHiddenFlag(cl::Hidden);
}
/// Removes command line options exposed from within LLVM that are unlikely
/// to be useful for end users from the -help output.
static void hideLLVMOptions() {
llvm::StringMap<cl::Option *> map;
cl::getRegisteredOptions(map);
hide(map, "bounds-checking-single-trap");
hide(map, "disable-spill-fusing");
hide(map, "enable-correct-eh-support");
hide(map, "enable-load-pre");
hide(map, "enable-objc-arc-opts");
hide(map, "enable-tbaa");
hide(map, "fatal-assembler-warnings");
hide(map, "internalize-public-api-file");
hide(map, "internalize-public-api-list");
hide(map, "join-liveintervals");
hide(map, "limit-float-precision");
hide(map, "mc-x86-disable-arith-relaxation");
hide(map, "pre-RA-sched");
hide(map, "print-after-all");
hide(map, "print-before-all");
hide(map, "print-machineinstrs");
hide(map, "profile-estimator-loop-weight");
hide(map, "profile-estimator-loop-weight");
hide(map, "profile-file");
hide(map, "profile-info-file");
hide(map, "profile-verifier-noassert");
hide(map, "regalloc");
hide(map, "shrink-wrap");
hide(map, "spiller");
hide(map, "stats");
hide(map, "strip-debug");
hide(map, "struct-path-tbaa");
hide(map, "time-passes");
hide(map, "unit-at-a-time");
hide(map, "verify-dom-info");
hide(map, "verify-loop-info");
hide(map, "verify-regalloc");
hide(map, "verify-region-info");
hide(map, "verify-scev");
hide(map, "x86-early-ifcvt");
hide(map, "x86-use-vzeroupper");
}
#endif
int main(int argc, char **argv);
/// Parses switches from the command line, any response files and the global
@@ -195,6 +248,9 @@ static void parseCommandLine(int argc, char **argv, Strings &sourceFiles, bool &
// Handle fixed-up arguments!
cl::SetVersionPrinter(&printVersion);
#if LDC_LLVM_VER >= 303
hideLLVMOptions();
#endif
cl::ParseCommandLineOptions(final_args.size(), const_cast<char**>(&final_args[0]),
"LDC - the LLVM D compiler\n"
#if LDC_LLVM_VER < 302