[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

138

Why here is target= instead of target-?

[tuliom]

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

138

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):
                 features.add("x86_64-apple")
                 host_cxx = getattr(config, "host_cxx", None)
                 if "address" in sanitizers and self.get_clang_has_lsan(
                     host_cxx, target_triple
                 ):
                     self.with_environment(
                         "ASAN_OPTIONS", "detect_leaks=1", append_path=True
                     )
             if re.match(r"^x86_64.*-linux", target_triple):
                 features.add("x86_64-linux")
             if re.match(r"^i.86.*", target_triple):
                 features.add("target-x86")
             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"
             )