jhuber6 added inline comments.
================
Comment at: clang/include/clang/Driver/Options.td:2527
HelpText<"Use the static host OpenMP runtime while linking.">;
+def offload_device_only : Flag<["-"], "offload-device-only">,
+ HelpText<"Only compile for the offloading device.">;
----------------
tra wrote:
> We should be using "--" for the new options.
What's the reason for preferring `--` over `-`? Is it just because `-o` can
bind to output?
================
Comment at: clang/lib/Driver/Driver.cpp:4215
Action *HostAction) const {
- if (!isa<CompileJobAction>(HostAction))
+ if (Args.hasArg(options::OPT_offload_host_only))
return HostAction;
----------------
tra wrote:
> This will not always be correct. E.g. `--offload-host-only
> --offload-host-device` would be true here, but we would still want to compile
> for both and device.
>
> Is there a reason we can no longer rely on `HostAction`?
Guess I should just use the last argument. Host action is used below, can
probably merge these if statements.
================
Comment at: clang/lib/Driver/Driver.cpp:4223
+
+ if (!isa<CompileJobAction>(HostAction) && PL.back() != phases::Preprocess)
+ return HostAction;
----------------
tra wrote:
> This could use a comment. I don't quite understand what we're doing here and
> why.
> Only doing host-side preprocessing if -E is passed?
OpenMP requires host IR for the device compile, but `-E` doesn't generate one,
but we don't use it for preprocessing.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D124220/new/
https://reviews.llvm.org/D124220
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