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Author SHA1 Message Date
Aaron Ballman adc402bf3d Use functions with prototypes when appropriate; NFC 
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the eleventh batch of tests being updated (there are a
significant number of other tests left to be updated).
 2022-02-15 16:06:43 -05:00
Nick Desaulniers a63d4f6cba [Clang][Codegen] rename no_profile fn attr no_profile_instrument_function 
GCC has had this function attribute since GCC 7.1 for this purpose. I
added "no_profile" last week in D104475; rename this to
"no_profile_instrument_function" to improve compatibility with GCC.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80223#c11

Reviewed By: MaskRay, aaron.ballman

Differential Revision: https://reviews.llvm.org/D104658
 2021-06-21 11:42:06 -07:00
Nick Desaulniers 817218336a Whitespace fixes for 
193e41c987
which reportedly fails on the mac builds.
 2021-06-18 15:09:18 -07:00
Nick Desaulniers 193e41c987 [Clang][Codegen] Add GNU function attribute 'no_profile' and lower it to noprofile 
noprofile IR attribute already exists to prevent profiling with PGO;
emit that when a function uses the newly added no_profile function
attribute.

The Linux kernel would like to avoid compiler generated code in
functions annotated with such attribute. We already respect this for
libcalls to fentry() and mcount().

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80223
Link: https://lore.kernel.org/lkml/CAKwvOdmPTi93n2L0_yQkrzLdmpxzrOR7zggSzonyaw2PGshApw@mail.gmail.com/

Reviewed By: MaskRay, void, phosek, aaron.ballman

Differential Revision: https://reviews.llvm.org/D104475
 2021-06-18 13:42:32 -07:00