[Backend] Keep call site info valid through the backend
Handle call instruction replacements and deletions in order to preserve
valid state of the call site info of the MachineFunction.
NOTE: If the call site info is enabled for a new target, the assertion from
the MachineFunction::DeleteMachineInstr() should help to locate places
where the updateCallSiteInfo() should be called in order to preserve valid
state of the call site info.
([10/13] Introduce the debug entry values.)
Co-authored-by: Ananth Sowda <asowda@cisco.com>
Co-authored-by: Nikola Prica <nikola.prica@rt-rk.com>
Co-authored-by: Ivan Baev <ibaev@cisco.com>
Differential Revision: https://reviews.llvm.org/D61062
llvm-svn: 364536
diff --git a/llvm/lib/CodeGen/LiveRangeEdit.cpp b/llvm/lib/CodeGen/LiveRangeEdit.cpp
index 8602177..7968ad3 100644
--- a/llvm/lib/CodeGen/LiveRangeEdit.cpp
+++ b/llvm/lib/CodeGen/LiveRangeEdit.cpp
@@ -232,6 +232,8 @@
LLVM_DEBUG(dbgs() << " folded: " << *FoldMI);
LIS.ReplaceMachineInstrInMaps(*UseMI, *FoldMI);
UseMI->eraseFromParent();
+ if (UseMI->isCall())
+ UseMI->getMF()->updateCallSiteInfo(UseMI, FoldMI);
DefMI->addRegisterDead(LI->reg, nullptr);
Dead.push_back(DefMI);
++NumDCEFoldedLoads;