[PATCH] D15774: [PEI] Calculate stack protector frame offset before local stack allocation.

[Charlie Turner via llvm-commits]

chatur01 created this revision.
chatur01 added reviewers: void, grosbach, hfinkel, jmagee, sunfish.
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`In cases where virtual frame index registers are used, make sure the canary is
calculated at an offset above those, otherwise it's placed in the wrong part of
the stack.

This was only causing problems with variable length arguments lists.

Fixes PR25610.`

Repository:
  rL LLVM

http://reviews.llvm.org/D15774

Files:
  lib/CodeGen/PrologEpilogInserter.cpp
  test/CodeGen/AArch64/stack-guard-vaarg.ll

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