[PATCH] D15200: [X86] Put no-op ADJCALLSTACK markers around all dynamic lowerings

[Reid Kleckner via llvm-commits]

rnk created this revision.
rnk added a reviewer: qcolombet.
rnk added subscribers: llvm-commits, hans.

These ADJCALLSTACK markers don't generate code, but they keep dynamic
alloca code that calls chkstk out of the prologue.

http://reviews.llvm.org/D15200

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/shrink-wrap-chkstk.ll

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