Reapply "Deprecate the `-fbasic-block-sections=labels` option." (#110039)

This reapplies commit 1911a50fae8a441b445eb835b98950710d28fc88 with a
minor fix in lld/ELF/LTO.cpp which sets Options.BBAddrMap when
`--lto-basic-block-sections=labels` is passed.

1 files changed, 0 insertions, 7 deletions

diff --git a/llvm/lib/CodeGen/BasicBlockSections.cpp b/llvm/lib/CodeGen/BasicBlockSections.cpp
index 0071284..1eedfc4 100644
--- a/llvm/lib/CodeGen/BasicBlockSections.cpp
+++ b/llvm/lib/CodeGen/BasicBlockSections.cpp
@@ -311,11 +311,6 @@ bool BasicBlockSections::handleBBSections(MachineFunction &MF) {
   // original layout positions and finding the original fallthroughs.
   MF.RenumberBlocks();
 
-  if (BBSectionsType == BasicBlockSection::Labels) {
-    MF.setBBSectionsType(BBSectionsType);
-    return true;
-  }
-
   DenseMap<UniqueBBID, BBClusterInfo> FuncClusterInfo;
   if (BBSectionsType == BasicBlockSection::List) {
     auto [HasProfile, ClusterInfo] =
@@ -382,8 +377,6 @@ bool BasicBlockSections::handleBBSections(MachineFunction &MF) {
 // avoids the need to store basic block IDs in the BB address map section, since
 // they can be determined implicitly.
 bool BasicBlockSections::handleBBAddrMap(MachineFunction &MF) {
-  if (MF.getTarget().getBBSectionsType() == BasicBlockSection::Labels)
-    return false;
   if (!MF.getTarget().Options.BBAddrMap)
     return false;
   MF.RenumberBlocks();