arsenm added inline comments.
================
Comment at: clang/lib/Driver/ToolChains/AMDGPU.cpp:394-395
+ // Get the last argument of -mwavefrontsize64 or -mno-wavefrontsize64.
+ for (auto WaveArg : Args.filtered_reverse(options::OPT_mwavefrontsize64,
+ options::OPT_mno_wavefrontsize64))
{
+ if (WaveArg->getOption().getID() == options::OPT_mwavefrontsize64) {
----------------
yaxunl wrote:
> arsenm wrote:
> > Why isn't this using hasFlag?
> > e.g. like
> >
> > ```
> > DriverArgs.hasFlag(options::OPT_fcuda_flush_denormals_to_zero,
> > options::OPT_fno_cuda_flush_denormals_to_zero,
> > getDefaultDenormsAreZeroForTarget(Kind)))
> > ```
> hasFlag always return true or false, but here we have 3 cases : no arg, last
> arg is wave64, last arg is no-wave64.
hasFlag considers all of these. The features only really need to add
+wavefrontsze64 or not based on true or false, the rest is just noise
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D88370/new/
https://reviews.llvm.org/D88370
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