[all-commits] [llvm/llvm-project] e11089: [WEbAssembly] Clear frame base vreg in explicit-lo...

[Derek Schuff via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e110897e28c31f0241590a04e19814b5faeb5663
      https://github.com/llvm/llvm-project/commit/e110897e28c31f0241590a04e19814b5faeb5663
  Author: Derek Schuff <dschuff at chromium.org>
  Date:   2020-03-26 (Thu, 26 Mar 2020)

  Changed paths:
    M llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp

  Log Message:
  -----------
  [WEbAssembly] Clear frame base vreg in explicit-locals when stack pointer is dead

Having an alloca in a function causes the stack pointer to be generated in the
prolog, but if it's unused other than for debug info, explicit-locals will drop
it and not allocate a local. In this case we need to reset the FrameBaseVreg.

Differential Revision: https://reviews.llvm.org/D76784