[all-commits] [llvm/llvm-project] b7dee6: [OpenMPIRBuilder] Implement tileLoops.

[Michael Kruse via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b7dee667b64ff7dea66b483a35883190798c7d72
      https://github.com/llvm/llvm-project/commit/b7dee667b64ff7dea66b483a35883190798c7d72
  Author: Michael Kruse <llvm-project at meinersbur.de>
  Date:   2021-01-23 (Sat, 23 Jan 2021)

  Changed paths:
    M llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
    M llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
    M llvm/lib/IR/BasicBlock.cpp
    M llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp

  Log Message:
  -----------
  [OpenMPIRBuilder] Implement tileLoops.

The  tileLoops method implements the code generation part of the tile directive introduced in OpenMP 5.1. It takes a list of loops forming a loop nest, tiles it, and returns the CanonicalLoopInfo representing the generated loops.

The implementation takes n CanonicalLoopInfos, n tile size Values and returns 2*n new CanonicalLoopInfos. The input CanonicalLoopInfos are invalidated and BBs not reused in the new loop nest removed from the function.

In a modified version of D76342, I was able to correctly compile and execute a tiled loop nest.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D92974