vitalybuka added inline comments.

================
Comment at: compiler-rt/test/msan/chained_origin_empty_stack_npm.cpp:4
+// this test.
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 \
+// RUN:     -fexperimental-new-pass-manager -O3 %s -o %t && \
----------------
vitalybuka wrote:
> rnk wrote:
> > leonardchan wrote:
> > > nemanjai wrote:
> > > > nemanjai wrote:
> > > > > vitalybuka wrote:
> > > > > > Why not to add RUN: section with -fexperimental-new-pass-manager 
> > > > > > into original tests?
> > > > > I just felt that this is a simpler way forward for a couple of 
> > > > > reasons:
> > > > > 1. Once the default switches, it is a very obvious change to just 
> > > > > delete these files rather than digging through the code inside the 
> > > > > existing ones
> > > > > 2. Many of the tests actually contain the testing that is split up 
> > > > > into multiple steps so I would have to duplicate all the steps for 
> > > > > the NPM vs. default builds:
> > > > > - compile/link
> > > > > - run with one option set and FileCheck
> > > > > - run with another option set and FileCheck
> > > > > - rinse/repeat
> > > > > (example: chained_origin_limits.cpp)
> > > > > 
> > > > > But of course, if there are strong objections to this approach, I can 
> > > > > certainly go the other way.
> > > > Seems Phabricator reformatted what I wrote here. Points 3, 4, 5, 6 were 
> > > > supposed to be sub-bullets for 2.
> > > > Basically, I tried to describe that in the mentioned test case, I would 
> > > > have to replicate a number of subsequent steps for each `RUN` directive 
> > > > that invokes the compiler.
> > > If we're going this way, I think the original tests should explicitly 
> > > have `-fno-experimental-new-pass-manager`. Also no strong preference 
> > > towards either way.
> > I don't think we should even make changes to the tests in compiler-rt. We 
> > should write a targeted test in clang/test/CodeGen that ensures these 
> > options are passed down correctly to the MSan instrumentation pass. It 
> > should be easy to FileCheck the IR to look for the appropriate 
> > instrumentation callbacks. We can run that test with the new and old PM.
> I also prefer not have these new tests.
> Maybe we can add some option to run all compiler-rt tests with new PM. It 
> should be a separate patch.
maybe COMPILER_RT_TEST_COMPILER_CFLAGS is enough


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77249/new/

https://reviews.llvm.org/D77249



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