[PowerPC][lit] Recognize triple ppc64le.*-linux

[tuliom]

Summary

Some Linux distributions, e.g. Red Hat, use the triple
ppc64le-redhat-linux. Add a pattern that treats ppc64le.*-linux as
powerpc64le-linux during test execution.

[qiucf]

Will this also recognize powerpc64le-redhat-linux?

[tuliom]

In D149746#4321215, @qiucf wrote:

Will this also recognize powerpc64le-redhat-linux?

This is not changing how powerpc64le-redhat-linux is interpreted. It is just interpreting ppc64le-redhat-linux as if it were powerpc64le-linux when running lit tests.

[qiucf]

llvm/utils/lit/lit/llvm/config.py

148

Why here is target= instead of target-?

[tuliom]

llvm/utils/lit/lit/llvm/config.py

148

Because the tests expect target=, e.g.:
https://github.com/llvm/llvm-project/blob/main/llvm/docs/TestingGuide.rst?plain=1#L542
https://github.com/llvm/llvm-project/blob/main/flang/test/Driver/fast_math.f90#L71
https://github.com/llvm/llvm-project/blob/main/clang/test/CodeGenCoroutines/pr56329.cpp#L5

AFAIU, in order to start accepting target-powerpc.*, all tests using target=powerpc.* would have to be modified.

[qiucf]

LGTM, thanks

llvm/utils/lit/lit/llvm/config.py

def __init__(self, lit_config, config):
             elif re.match(r'^x86_64.*', target_triple):
                 features.add('target-x86_64')
             elif re.match(r'^aarch64.*', target_triple):
                 features.add('target-aarch64')
             elif re.match(r'^arm64.*', target_triple):
                 features.add('target-aarch64')
             elif re.match(r'^arm.*', target_triple):
                 features.add('target-arm')
+            if re.match(r'^ppc64le.*-linux', target_triple):
+                features.add('target=powerpc64le-linux')
 
         use_gmalloc = lit_config.params.get('use_gmalloc', None)
         if lit.util.pythonize_bool(use_gmalloc):
             # Allow use of an explicit path for gmalloc library.
             # Will default to '/usr/lib/libgmalloc.dylib' if not set.
             gmalloc_path_str = lit_config.params.get(
                 'gmalloc_path', '/usr/lib/libgmalloc.dylib')
             if gmalloc_path_str is not None: