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6 Commits

Author SHA1 Message Date
Xinliang David Li f7185dcccd Fix -Wpointer-sign warning 
llvm-svn: 253770
 2015-11-21 07:26:46 +00:00
Xinliang David Li 2d5bf07c1d [PGO] Implement a more robust/readable Writer callback interface 
(patch suggested by silvas)

With this patch, the IO information is wrapped in struct
ProfDataIOVec, and interface of writerCallback takes a vector
of IOVec and a pointer to writer context pointer.

Differential Revision: http://reviews.llvm.org/D14859

llvm-svn: 253764
 2015-11-21 04:16:42 +00:00
Xinliang David Li e8efaeae4d [PGO] Minor cleanups (from review feedback) 
1. fix naming problem of file/buffer writer
2. change BufferOrFile to WriterCtx
3. move writer and writerctx together

llvm-svn: 253545
 2015-11-19 07:21:47 +00:00
Xinliang David Li 6e55716509 Fix format of previous patch (NFC) 
llvm-svn: 253503
 2015-11-18 21:11:46 +00:00
Xinliang David Li 1d8d46ae39 [PGO] Refactor File and Buffer API profile writing code 
With this change, Buffer API and File API implementations
are unified.

Differential Revision: http://reviews.llvm.org/D14692

llvm-svn: 253500
 2015-11-18 21:08:03 +00:00
Justin Bogner 55248db0c9 profile: Add low level versions of profile buffer functions 
On Darwin, compiler_rt uses magic linker symbols to find the profile
counters in the __DATA segment.  This is a reasonable method for
normal, hosted, userspace programs.  However programs with custom
memory layouts, such as the kernel, will need to tell compiler_rt
explicitly where to find these sections.

Patch by Lawrence D'Anna. Thanks!

llvm-svn: 223840
 2014-12-09 22:07:25 +00:00