[PATCH] D26263: [WebAssembly] Emit a BasePointer when we have overly-aligned stack objects

[Jacob Gravelle via llvm-commits]

jgravelle-google created this revision.
jgravelle-google added reviewers: dschuff, sunfish.
jgravelle-google added a subscriber: llvm-commits.
Herald added a subscriber: jfb.

Because we shift the stack pointer by an unknown amount, we need an
additional pointer. In the case where we have variable-size objects
as well, we can't reuse the frame pointer, thus three pointers.


https://reviews.llvm.org/D26263

Files:
  lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
  lib/Target/WebAssembly/WebAssemblyFrameLowering.h
  lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
  test/CodeGen/WebAssembly/alignment.ll

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