rjmccall added a comment.
Hmm. Do we actually want this behavior of `fast` overriding pragmas? What do
other compilers do here? It might be reasonable to just treat this as a bug.
================
Comment at: clang/docs/LanguageExtensions.rst:3214
+should be noted that ``-ffp-contract=fast`` option will always fuse multiply
+and addition across statements disregarding fp contract controlling pragmas.
----------------
Suggestion:
This can be useful when fast contraction is otherwise enabled for the
translation unit
with the ``-ffp-contract=faststd`` flag. Note that ``-ffp-contract=fast``
will override
pragmas to fuse multiply and addition across statements regardless of any
controlling
pragmas.
================
Comment at: clang/docs/UsersManual.rst:1295
of this by default. This behavior can be controlled with the
- ``FP_CONTRACT`` pragma. Please refer to the pragma documentation for a
- description of how the pragma interacts with this option.
+ ``FP_CONTRACT`` pragma. Clang also supports ``clang fp contract`` pragma
+ for more flexible controlling of floating-point contractions in all
----------------
"...with the ``FP_CONTRACT`` and ``clang fp contract`` pragmas. Please
refer..."
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D90174/new/
https://reviews.llvm.org/D90174
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
