Does anyone have the IR that llvmpipe is creating?

Split off x87 fabs/fchs instructions into WriteFSign class as well

In D45787#1071927, @gbedwell wrote:

What's the more general plan for regression testing exegesis? It looks like the issue with pfm failing to match counters was a regression introduced by rL329675 due to the trailing commas. It would be nice to be able to have regression tests for this sort of thing, especially as it's under active development so the churn is likely to be quite high along with the risk of introducing regressions. I know it gets complicated due to the libpfm dependency and the fact it's CPU specific, but it should still be a solvable problem.

Don't remove the -fast-isel tests - they should be updated to test the generic codegen instead

Please can you update the sse2-intrinsics-fast-isel.ll etc. to use the same codegen as the clang builtins tests.

This doesn't seem x86 specific - any reason not to include it in dagcombine?

LGTM - thanks Greg!

In D45369#1061961, @MaskRay wrote:

It would be great to use a python3 shebang. These utilities are independent from other (possibly Python 2 specific) Python files

% head -n 1 utils/update_cc_test_checks.py
#!/usr/bin/env python3