[PATCH] D77015: Fix mismatch in prologue and epilogue for funclets on AArch64 Windows

[Daniel Frampton via Phabricator via llvm-commits]

danielframpton created this revision.
danielframpton added reviewers: efriedma, rnk.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

The generated code for a funclet can have an add to sp in the epilogue for which there is no corresponding sub in the prologue.

This patch removes the early return from emitPrologue that was preventing the sub to sp, and instead conditionalizes the appropriate parts of the rest of the function.

Test case included.

Fixes: See https://bugs.llvm.org/show_bug.cgi?id=45345


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D77015

Files:
  llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
  llvm/test/CodeGen/AArch64/funclet-match-add-sub-stack.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D77015.253428.patch
Type: text/x-patch
Size: 5441 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20200329/aadab44d/attachment-0001.bin>