From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Thu, 16 May 2013 04:16:25 +0000 (+0000)
Subject: Don't call addFrameMove on XCore.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=ce9bd66d016b839b795327891a54356c4a8a25ab;p=oota-llvm.git

Don't call addFrameMove on XCore.

getExceptionHandlingType is not ExceptionHandling::DwarfCFI on xcore, so
etFrameInstructions is never called. There is no point creating cfi
instructions if they are never used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181979 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/XCore/XCoreFrameLowering.cpp b/lib/Target/XCore/XCoreFrameLowering.cpp
index 9798411381e..0ab824b5406 100644
--- a/lib/Target/XCore/XCoreFrameLowering.cpp
+++ b/lib/Target/XCore/XCoreFrameLowering.cpp
@@ -136,16 +136,6 @@ void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
       // Show update of SP.
       MCSymbol *FrameLabel = MMI->getContext().CreateTempSymbol();
       BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(FrameLabel);
-
-      MachineLocation SPDst(MachineLocation::VirtualFP);
-      MachineLocation SPSrc(MachineLocation::VirtualFP, -FrameSize * 4);
-      MMI->addFrameMove(FrameLabel, SPDst, SPSrc);
-
-      if (LRSavedOnEntry) {
-        MachineLocation CSDst(MachineLocation::VirtualFP, 0);
-        MachineLocation CSSrc(XCore::LR);
-        MMI->addFrameMove(FrameLabel, CSDst, CSSrc);
-      }
     }
   }
   if (saveLR) {
@@ -156,9 +146,6 @@ void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
     if (emitFrameMoves) {
       MCSymbol *SaveLRLabel = MMI->getContext().CreateTempSymbol();
       BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(SaveLRLabel);
-      MachineLocation CSDst(MachineLocation::VirtualFP, LRSpillOffset);
-      MachineLocation CSSrc(XCore::LR);
-      MMI->addFrameMove(SaveLRLabel, CSDst, CSSrc);
     }
   }
 
@@ -171,9 +158,6 @@ void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
     if (emitFrameMoves) {
       MCSymbol *SaveR10Label = MMI->getContext().CreateTempSymbol();
       BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(SaveR10Label);
-      MachineLocation CSDst(MachineLocation::VirtualFP, FPSpillOffset);
-      MachineLocation CSSrc(XCore::R10);
-      MMI->addFrameMove(SaveR10Label, CSDst, CSSrc);
     }
     // Set the FP from the SP.
     unsigned FramePtr = XCore::R10;
@@ -183,24 +167,6 @@ void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
       // Show FP is now valid.
       MCSymbol *FrameLabel = MMI->getContext().CreateTempSymbol();
       BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(FrameLabel);
-      MachineLocation SPDst(FramePtr);
-      MachineLocation SPSrc(MachineLocation::VirtualFP);
-      MMI->addFrameMove(FrameLabel, SPDst, SPSrc);
-    }
-  }
-
-  if (emitFrameMoves) {
-    // Frame moves for callee saved.
-    std::vector<std::pair<MCSymbol*, CalleeSavedInfo> >&SpillLabels =
-        XFI->getSpillLabels();
-    for (unsigned I = 0, E = SpillLabels.size(); I != E; ++I) {
-      MCSymbol *SpillLabel = SpillLabels[I].first;
-      CalleeSavedInfo &CSI = SpillLabels[I].second;
-      int Offset = MFI->getObjectOffset(CSI.getFrameIdx());
-      unsigned Reg = CSI.getReg();
-      MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
-      MachineLocation CSSrc(Reg);
-      MMI->addFrameMove(SpillLabel, CSDst, CSSrc);
     }
   }
 }