[PATCH] D30797: [Outliner] Add simple stack fixup support in X86

[Jessica Paquette via Phabricator via llvm-commits]

paquette created this revision.

This commit adds support for simple stack fixups to the MachineOutliner pass. There are certain instructions that use, say, the stack pointer in x86-64 that can safely be outlined by modifying their offsets inside outlined functions. By making these instructions legal, it's possible to find longer sequences of instructions to outline.

As a start, commit adds support for outlining MOV64mr and MOV64rm MachineInstrs that use RSP to the x86-64 outliner.

This relies on https://reviews.llvm.org/D30670.


https://reviews.llvm.org/D30797

Files:
  lib/Target/X86/X86InstrInfo.cpp
  lib/Target/X86/X86InstrInfo.h

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