[all-commits] [llvm/llvm-project] a1783b: [SimpifyCFG] Remove recursion from FoldCondBranchO...

[Carl Ritson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a1783b54e8b873c4a668259ae69bfc150f879dca
      https://github.com/llvm/llvm-project/commit/a1783b54e8b873c4a668259ae69bfc150f879dca
  Author: Carl Ritson <carl.ritson at amd.com>
  Date:   2021-08-10 (Tue, 10 Aug 2021)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyCFG.cpp

  Log Message:
  -----------
  [SimpifyCFG] Remove recursion from FoldCondBranchOnPHI. NFCI.

Avoid stack overflow errors on systems with small stack sizes
by removing recursion in FoldCondBranchOnPHI.

This is a simple change as the recursion was only iteratively
calling the function again on the same arguments.
Ideally this would be compiled to a tail call, but there is
no guarantee.

Reviewed By: lebedev.ri

Differential Revision: https://reviews.llvm.org/D107803