Pass DebugLoc and SDLoc by const ref.

This used to be free, copying and moving DebugLocs became expensive
after the metadata rewrite. Passing by reference eliminates a ton of
track/untrack operations. No functionality change intended.

llvm-svn: 272512

1 files changed, 15 insertions, 20 deletions

diff --git a/llvm/lib/Target/ARM/ARMSelectionDAGInfo.h b/llvm/lib/Target/ARM/ARMSelectionDAGInfo.h
index 61142024f32..2ddb42c9539 100644
--- a/llvm/lib/Target/ARM/ARMSelectionDAGInfo.h
+++ b/llvm/lib/Target/ARM/ARMSelectionDAGInfo.h
@@ -38,33 +38,28 @@ namespace ARM_AM {
 
 class ARMSelectionDAGInfo : public SelectionDAGTargetInfo {
 public:
-
-  SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, SDLoc dl,
-                                  SDValue Chain,
-                                  SDValue Dst, SDValue Src,
-                                  SDValue Size, unsigned Align,
-                                  bool isVolatile, bool AlwaysInline,
+  SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, const SDLoc &dl,
+                                  SDValue Chain, SDValue Dst, SDValue Src,
+                                  SDValue Size, unsigned Align, bool isVolatile,
+                                  bool AlwaysInline,
                                   MachinePointerInfo DstPtrInfo,
                                   MachinePointerInfo SrcPtrInfo) const override;
 
-  SDValue EmitTargetCodeForMemmove(SelectionDAG &DAG, SDLoc dl,
-                                   SDValue Chain,
-                                   SDValue Dst, SDValue Src,
-                                   SDValue Size, unsigned Align, bool isVolatile,
-                                   MachinePointerInfo DstPtrInfo,
-                                   MachinePointerInfo SrcPtrInfo) const override;
+  SDValue
+  EmitTargetCodeForMemmove(SelectionDAG &DAG, const SDLoc &dl, SDValue Chain,
+                           SDValue Dst, SDValue Src, SDValue Size,
+                           unsigned Align, bool isVolatile,
+                           MachinePointerInfo DstPtrInfo,
+                           MachinePointerInfo SrcPtrInfo) const override;
 
   // Adjust parameters for memset, see RTABI section 4.3.4
-  SDValue EmitTargetCodeForMemset(SelectionDAG &DAG, SDLoc dl,
-                                  SDValue Chain,
-                                  SDValue Op1, SDValue Op2,
-                                  SDValue Op3, unsigned Align,
-                                  bool isVolatile,
+  SDValue EmitTargetCodeForMemset(SelectionDAG &DAG, const SDLoc &dl,
+                                  SDValue Chain, SDValue Op1, SDValue Op2,
+                                  SDValue Op3, unsigned Align, bool isVolatile,
                                   MachinePointerInfo DstPtrInfo) const override;
 
-  SDValue EmitSpecializedLibcall(SelectionDAG &DAG, SDLoc dl,
-                                 SDValue Chain,
-                                 SDValue Dst, SDValue Src,
+  SDValue EmitSpecializedLibcall(SelectionDAG &DAG, const SDLoc &dl,
+                                 SDValue Chain, SDValue Dst, SDValue Src,
                                  SDValue Size, unsigned Align,
                                  RTLIB::Libcall LC) const;
 };