[PATCH] D95271: [CSSPGO] Passing the clang driver switch -fpseudo-probe-for-profiling to the linker.

[Hongtao Yu via Phabricator via cfe-commits]

hoy added inline comments.


================
Comment at: clang/lib/Driver/ToolChains/CommonArgs.cpp:609
+  // Pass an option to enable pseudo probe emission.
+  if (Args.hasArg(options::OPT_fpseudo_probe_for_profiling))
+    CmdArgs.push_back("-plugin-opt=pseudo-probe-for-profiling");
----------------
wenlei wrote:
> `getLastArg(options::OPT_fpseudo_probe_for_profiling, options::OPT_fno_pseudo_probe_for_profiling` instead?
Good point, changed to 
```
Args.hasFlag(options::OPT_fpseudo_probe_for_profiling, options::OPT_fno_pseudo_probe_for_profiling)
```

which matches the last positive flag


```
bool ArgList::hasFlag(OptSpecifier Pos, OptSpecifier Neg, bool Default) const {
  if (Arg *A = getLastArg(Pos, Neg))
    return A->getOption().matches(Pos);
  return Default;
}
```


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D95271/new/

https://reviews.llvm.org/D95271