[PATCH] D50020: [X86] Preserve more liveness information in emitStackProbeInline

[Francis Visoiu Mistrih via Phabricator via llvm-commits]

thegameg created this revision.
thegameg added reviewers: MatzeB, rnk, craig.topper.

This commit fixes two issues with the liveness information after the call:

1. The code always spills RCX and RDX if InProlog == true, which results in a use of undefined phys reg.
2. FinalReg, JoinReg, RoundedReg, SizeReg are not added as live-ins to the basic blocks that use them, therefore they are seen undefined.

PR38376


https://reviews.llvm.org/D50020

Files:
  lib/Target/X86/X86FrameLowering.cpp
  test/CodeGen/X86/win_coreclr_chkstk.ll
  test/CodeGen/X86/win_coreclr_chkstk_liveins.mir

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