Revert rG70f5aecedef9a6e347e425eb5b843bf797b95319 - "Reland [AArch64][DebugInfo] Do not recompute CalleeSavedStackSize (Take 2)"

This fails on EXPENSIVE_CHECKS builds

3 files changed, 4 insertions, 16 deletions

diff --git a/llvm/lib/CodeGen/LiveDebugValues.cpp b/llvm/lib/CodeGen/LiveDebugValues.cpp
index b15c594..ea96578 100644
--- a/llvm/lib/CodeGen/LiveDebugValues.cpp
+++ b/llvm/lib/CodeGen/LiveDebugValues.cpp
@@ -1432,7 +1432,8 @@ bool LiveDebugValues::runOnMachineFunction(MachineFunction &MF) {
   TRI = MF.getSubtarget().getRegisterInfo();
   TII = MF.getSubtarget().getInstrInfo();
   TFI = MF.getSubtarget().getFrameLowering();
-  TFI->getCalleeSaves(MF, CalleeSavedRegs);
+  TFI->determineCalleeSaves(MF, CalleeSavedRegs,
+                            std::make_unique<RegScavenger>().get());
   LS.initialize(MF);
 
   bool Changed = ExtendRanges(MF);
diff --git a/llvm/lib/CodeGen/RegUsageInfoCollector.cpp b/llvm/lib/CodeGen/RegUsageInfoCollector.cpp
index 5a79ac4..757ff0e 100644
--- a/llvm/lib/CodeGen/RegUsageInfoCollector.cpp
+++ b/llvm/lib/CodeGen/RegUsageInfoCollector.cpp
@@ -56,7 +56,7 @@ public:
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 
-  // Call getCalleeSaves and then also set the bits for subregs and
+  // Call determineCalleeSaves and then also set the bits for subregs and
   // fully saved superregs.
   static void computeCalleeSavedRegs(BitVector &SavedRegs, MachineFunction &MF);
 
@@ -199,7 +199,7 @@ computeCalleeSavedRegs(BitVector &SavedRegs, MachineFunction &MF) {
 
   // Target will return the set of registers that it saves/restores as needed.
   SavedRegs.clear();
-  TFI.getCalleeSaves(MF, SavedRegs);
+  TFI.determineCalleeSaves(MF, SavedRegs);
   if (SavedRegs.none())
     return;
 
diff --git a/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp b/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp
index bc59be8..9eeacc2 100644
--- a/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp
+++ b/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp
@@ -60,19 +60,6 @@ bool TargetFrameLowering::needsFrameIndexResolution(
   return MF.getFrameInfo().hasStackObjects();
 }
 
-void TargetFrameLowering::getCalleeSaves(const MachineFunction &MF,
-                                         BitVector &CalleeSaves) const {
-  const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo();
-  CalleeSaves.resize(TRI.getNumRegs());
-
-  const MachineFrameInfo &MFI = MF.getFrameInfo();
-  if (!MFI.isCalleeSavedInfoValid())
-    return;
-
-  for (const CalleeSavedInfo &Info : MFI.getCalleeSavedInfo())
-    CalleeSaves.set(Info.getReg());
-}
-
 void TargetFrameLowering::determineCalleeSaves(MachineFunction &MF,
                                                BitVector &SavedRegs,
                                                RegScavenger *RS) const {