llvm-project/llvm/lib/Passes
Eric Christopher c3649a0871 In the new pass manager use PTO.LoopUnrolling to determine when and how
we will unroll loops. Also comment a few occasions where we need to
know whether or not we're forcing the unwinder or not.

The default before and after this patch is for LoopUnroll to be enabled,
and for it to use a cost model to determine whether to unroll the loop
(`OnlyWhenForced = false`). Before this patch, disabling loop unroll
would not run the LoopUnroll pass. After this patch, the LoopUnroll pass
is being run, but it restricts unrolling to only the loops marked by a
pragma (`OnlyWhenForced = true`).

In addition, this patch disables the UnrollAndJam pass when disabling unrolling.

Testcase is in clang because it's controlling how the loop optimizer
is being set up and there's no other way to trigger the behavior.

llvm-svn: 374838
2019-10-14 22:56:07 +00:00
..
CMakeLists.txt [New PM][PassInstrumentation] IR printing support for New Pass Manager 2018-09-24 16:08:15 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
PassBuilder.cpp In the new pass manager use PTO.LoopUnrolling to determine when and how 2019-10-14 22:56:07 +00:00
PassPlugin.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
PassRegistry.def Reapply r374743 with a fix for the ocaml binding 2019-10-14 16:15:14 +00:00
StandardInstrumentations.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00