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| author | Dean Michael Berris <dberris@google.com> | 2017-03-06 07:08:21 +0000 |
|---|---|---|
| committer | Dean Michael Berris <dberris@google.com> | 2017-03-06 07:08:21 +0000 |
| commit | 418da3fe80230c26afaa29db0787f709c67c74c3 (patch) | |
| tree | f79afaeafdf792497a8c5896f4d7c1708d8b36e5 /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | 7e8eea429f16c8a36befb9e2ea3c0fbf9a33f283 (diff) | |
| download | bcm5719-llvm-418da3fe80230c26afaa29db0787f709c67c74c3.tar.gz bcm5719-llvm-418da3fe80230c26afaa29db0787f709c67c74c3.zip | |
[XRay] [clang] Allow logging the first argument of a function call.
Summary:
Functions with the "xray_log_args" attribute will tell LLVM to emit a special
XRay sled for compiler-rt to copy any call arguments to your logging handler.
Reviewers: dberris
Reviewed By: dberris
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D29704
llvm-svn: 296999
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index 1ebfd798c55..bad963b6fa3 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -779,6 +779,10 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, Fn->addFnAttr("function-instrument", "xray-always"); if (XRayAttr->neverXRayInstrument()) Fn->addFnAttr("function-instrument", "xray-never"); + if (const auto *LogArgs = D->getAttr<XRayLogArgsAttr>()) { + Fn->addFnAttr("xray-log-args", + llvm::utostr(LogArgs->getArgumentCount())); + } } else { Fn->addFnAttr( "xray-instruction-threshold", |
