[libcxx-commits] [PATCH] D131836: [libc++][CI] increases constexpr evaluation limit.

[Mark de Wever via Phabricator via libcxx-commits]

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This was discovered as an issue in D131317 <https://reviews.llvm.org/D131317>.

Depends on D131835 <https://reviews.llvm.org/D131835>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D131836

Files:
  libcxx/utils/libcxx/test/features.py


Index: libcxx/utils/libcxx/test/features.py
===================================================================
--- libcxx/utils/libcxx/test/features.py
+++ libcxx/utils/libcxx/test/features.py
@@ -39,6 +39,16 @@
           when=lambda cfg: hasCompileFlag(cfg, '-Wuser-defined-warnings'),
           actions=[AddCompileFlag('-Wuser-defined-warnings')]),
 
+  # The default maximum number of operations in a constexpr function are too
+  # small for some tests. A "correct" value has been determined empirical.
+  Feature(name='clang-constexpr-steps',
+          when=lambda cfg: hasCompileFlag(cfg, '-fconstexpr-steps=1'),
+          actions=[AddCompileFlag('-fconstexpr-steps=128000000')]),
+
+  Feature(name='gcc-constexpr-steps',
+          when=lambda cfg: hasCompileFlag(cfg, '-fconstexpr-ops-limit=1'),
+          actions=[AddCompileFlag('-fconstexpr-ops-limit=128000000')]),
+
   Feature(name='has-fblocks',                   when=lambda cfg: hasCompileFlag(cfg, '-fblocks')),
   Feature(name='-fsized-deallocation',          when=lambda cfg: hasCompileFlag(cfg, '-fsized-deallocation')),
   Feature(name='-faligned-allocation',          when=lambda cfg: hasCompileFlag(cfg, '-faligned-allocation')),


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