[XRay][clang] Make -fxray-modes= additive
Summary:
This allows us to do the following:
clang -fxray-modes=none ... -fxray-modes=xray-basic
It's important to be able to do this in cases where we'd like to
specialise the configuration for the invocation of the compiler, in
various scripting environments.
This is related to llvm.org/PR37066, a follow-up to D45474.
Reviewers: eizan, kpw, pelikan
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D45610
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@329989
91177308-0d34-0410-b5e6-
96231b3b80d8
projects / clang / commit