Improve output of DXC test runs:
- Add `-lit-verbose` option to `hctbuild` to setup lit test runs with
verbose output (`hcttest` will list test names as they run)
- Hide tests that are never supported (there was over 10K of unsupported
tests found by LIT discovery)
- Show warnings about non-essential tools only in LIT debug mode
- Skip over file copying and non-LIT part of `hcttest.cmd` if all
requested tests have already been run
- CMD tests have been move under clang's lit tests; keep the `hcttest
cmd` option for running cmd tests separately
Number of unsupported tests was reduced from 10452 to 1 if spir-v is
enabled, 39 if not. The number of tests that run did not change.
Disable LLVM LIT suites and tests
This patch is a little more selective than the clang counterpart. Most
of the LLVM tests are expected to pass in DXC.
In cases where very few tests are failing for obvious reasons I've
disabled individual tests using `REQUIRES` lines. In most places I've
disabled whole suites. Any suite that is expected to pass, I've also
included a comment of the failing test cases so that we can investigate
further.
IR Verifier and Integer tests are disabled only on Windows. These tests
pass on *nix platforms but fail on Windows due to the MS filesystem
modifications causing llvm-as to crash.
Helena Kotas
Chris B
Marcelo Lopez Ruiz