[PATCH] D84419: Fix interaction between stack alignment and inline-asm stack clash protection
serge via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Sep 22 08:53:20 PDT 2020
serge-sans-paille updated this revision to Diff 293475.
serge-sans-paille added a comment.
Enforce an extra invariant: after alignment adjustment, there is less than PAGE_SIZE unprobed, which make sit possible to decouple it from stack allocation probing. I think this adresses @efriedma comment (?)
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D84419/new/
https://reviews.llvm.org/D84419
Files:
llvm/lib/Target/X86/X86FrameLowering.cpp
llvm/lib/Target/X86/X86FrameLowering.h
llvm/test/CodeGen/X86/stack-clash-large-large-align.ll
llvm/test/CodeGen/X86/stack-clash-no-free-probe.ll
llvm/test/CodeGen/X86/stack-clash-small-alloc-medium-align.ll
llvm/test/CodeGen/X86/stack-clash-small-large-align.ll
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