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InstrProf: Instrumenter support for setting profile output from command line

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This change is the second of 3 patches to add support for specifying
the profile output from the command line via -fprofile-instr-generate=<path>,
where the specified output path/file will be overridden by the
LLVM_PROFILE_FILE environment variable.

This patch adds the necessary support to the llvm instrumenter, specifically
a new member of GCOVOptions for clang to save the specified filename, and
support for calling the new compiler-rt interface from __llvm_profile_init.

Patch by Teresa Johnson. Thanks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236288 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner
2015-04-30 23:49:23 +00:00
parent 04a02922de
commit d4f875c64f
2 changed files with 26 additions and 3 deletions
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3
include/llvm/Transforms/Instrumentation.h
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@@ -74,6 +74,9 @@ struct InstrProfOptions {
// Add the 'noredzone' attribute to added runtime library calls.
bool NoRedZone;
// Name of the profile file to use as output
std::string InstrProfileOutput;
};
/// Insert frontend instrumentation based profiling.