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| author | Ian Levesque <ianlevesque@fb.com> | 2020-06-16 20:36:11 -0400 |
|---|---|---|
| committer | Ian Levesque <ianlevesque@fb.com> | 2020-06-17 13:49:01 -0400 |
| commit | 7c7c8e0da4e0c400e7e06c4c6658372ea0b487ea (patch) | |
| tree | 470a101986e1efd2ec880cafcca85a533b597273 /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | acb30f6856c34b929b30bfd76dc938a1087af0a9 (diff) | |
| download | llvm-7c7c8e0da4e0c400e7e06c4c6658372ea0b487ea.zip llvm-7c7c8e0da4e0c400e7e06c4c6658372ea0b487ea.tar.gz llvm-7c7c8e0da4e0c400e7e06c4c6658372ea0b487ea.tar.bz2 | |
[xray] Option to omit the function index
Summary:
Add a flag to omit the xray_fn_idx to cut size overhead and relocations
roughly in half at the cost of reduced performance for single function
patching. Minor additions to compiler-rt support per-function patching
without the index.
Reviewers: dberris, MaskRay, johnislarry
Subscribers: hiraditya, arphaman, cfe-commits, #sanitizers, llvm-commits
Tags: #clang, #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D81995
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
| -rw-r--r-- | clang/lib/Frontend/CompilerInvocation.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index c718077..4c05717 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -1081,6 +1081,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, Opts.XRayInstructionThreshold = getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags); Opts.XRayIgnoreLoops = Args.hasArg(OPT_fxray_ignore_loops); + Opts.XRayOmitFunctionIndex = Args.hasArg(OPT_fno_xray_function_index); auto XRayInstrBundles = Args.getAllArgValues(OPT_fxray_instrumentation_bundle); |