[PATCH] D85756: [DebugInstrRef][5/9] Substitute debug value numbers to handle optimisations

[Jeremy Morse via Phabricator via llvm-commits]

jmorse created this revision.
jmorse added a reviewer: debug-info.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.
jmorse requested review of this revision.

This patch handles two optimisations, TwoAddressInstruction and X86's FixupLEAs pass, both of which optimise by re-creating instructions. For LEAs, various bits of arithmetic are better represented as LEAs on X86, while TwoAddressInstruction sometimes converts instrs into three address instructions if it's profitable. Both of these require substitutions to be created -- test that an entry is made in the MIR output. (Handling of this in LiveDebugValues comes later).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D85756

Files:
  llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
  llvm/lib/Target/X86/X86FixupLEAs.cpp
  llvm/test/DebugInfo/MIR/InstrRef/twoaddr-to-threeaddr-sub.mir

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D85756.284805.patch
Type: text/x-patch
Size: 3832 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20200811/00f72a41/attachment.bin>