llvm-project

Commit Graph

Author	SHA1	Message	Date
Honggyu Kim	2b0e424b2f	[Frontend] Fix mcount inlining bug Since some profiling tools, such as gprof, ftrace, and uftrace, use -pg option to generate a mcount function call at the entry of each function. Function invocation can be detected by this hook function. But mcount insertion is done before function inlining phase in clang, sometime a function that already has a mcount call can be inlined in the middle of another function. This patch adds an attribute "counting-function" to each function rather than emitting the mcount call directly in frontend so that this attribute can be processed in backend. Then the mcount calls can be properly inserted in backend after all the other optimizations are completed. Link: https://llvm.org/bugs/show_bug.cgi?id=28660 Reviewers: hans, rjmccall, hfinkel, rengolin, compnerd Subscribers: shenhan, cfe-commits Differential Revision: https://reviews.llvm.org/D22666 llvm-svn: 280355	2016-09-01 11:29:21 +00:00
Saleem Abdulrasool	c066d9cf55	Basic: fix profiling with GNU EABI The GNU profiling support indicates that the interface is `_mcount` rather than `mcount`. Conditionalise the behaviour according to the `-meabi gnu` flag. Resolves PR27311 llvm-svn: 266039	2016-04-12 03:05:03 +00:00
Saleem Abdulrasool	2a0932fb45	Correct pg instrumentation for AArch64 It seems that there was a miscommunication between Renato and I, and the original behaviour of AArch64 was to be preserved and not to mirror the new behaviour. Restore the original behaviour for AArch64. Addresses post-commit review comments from Renato Golin. llvm-svn: 265899	2016-04-10 14:29:55 +00:00
Saleem Abdulrasool	cb12255442	test: add additional tests for SVN r265888 Add test cases for AArch64 as well as that was changed as part of that change. llvm-svn: 265889	2016-04-10 03:31:09 +00:00
Saleem Abdulrasool	9b5ba547f1	Add support for __gnu_mcount_nc as the pg interface This adds support to optionally support using `__gnu_mcount_nc` as the mcount interface rather than `mcount` for Linux and EABI. The other targets do not provide an implementation for `__gnu_mcount_nc`. This can be activated via the `-meabi gnu` flag. Resolves PR23969. llvm-svn: 265888	2016-04-10 03:19:47 +00:00

5 Commits