tree 535f87fe83a622e6766da7b77b801ade5f7e8969
parent 8fbfe678d893e9c42e82e9b9dce3aca9626ad622
author Fedor Sergeev <fedor.sergeev@azul.com> 1547114513 +0000
committer Fedor Sergeev <fedor.sergeev@azul.com> 1547114513 +0000

[LoopUnroll] add parsing for unroll parameters in -passes pipeline

Allow to specify loop-unrolling with optional parameters explicitly
spelled out in -passes pipeline specification.
Introducing somewhat generic way of specifying parameters parsing via
FUNCTION_PASS_PARAMETRIZED pass registration.

Syntax of parametrized unroll pass name is as follows:
   'unroll<' parameter-list '>'

Where parameter-list is ';'-separate list of parameter names and optlevel
   optlevel: 'O[0-3]'
   parameter: { 'partial' | 'peeling' | 'runtime' | 'upperbound' }
   negated:  'no-' parameter

Example:
   -passes=loop(unroll<O3;runtime;no-upperbound>)

    this invokes LoopUnrollPass configured with OptLevel=3,
    Runtime, no UpperBound, everything else by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350808 91177308-0d34-0410-b5e6-96231b3b80d8