diff options
| 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 | f037bd533e9461b203548e6c1e8fca08155a0a51 (patch) | |
| tree | dff62d158af1f9ccbf536c47fd6045657ae848e3 /lib/CodeGen/CodeGenFunction.cpp | |
| parent | a7325b067d8d0ebf370ffbffb0f861d9252c551c (diff) | |
[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
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@296999 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | lib/CodeGen/CodeGenFunction.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp index 1ebfd798c5..bad963b6fa 100644 --- a/lib/CodeGen/CodeGenFunction.cpp +++ b/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", |