From c76909abfec876c6b751d693ebd3df07df686aa0 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Fri, 25 Sep 2009 20:36:54 +0000 Subject: Improve MachineMemOperand handling. - Allocate MachineMemOperands and MachineMemOperand lists in MachineFunctions. This eliminates MachineInstr's std::list member and allows the data to be created by isel and live for the remainder of codegen, avoiding a lot of copying and unnecessary translation. This also shrinks MemSDNode. - Delete MemOperandSDNode. Introduce MachineSDNode which has dedicated fields for MachineMemOperands. - Change MemSDNode to have a MachineMemOperand member instead of its own fields with the same information. This introduces some redundancy, but it's more consistent with what MachineInstr will eventually want. - Ignore alignment when searching for redundant loads for CSE, but remember the greatest alignment. Target-specific code which previously used MemOperandSDNodes with generic SDNodes now use MemIntrinsicSDNodes, with opcodes in a designated range so that the SelectionDAG framework knows that MachineMemOperand information is available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82794 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/MachineMemOperand.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/llvm/CodeGen/MachineMemOperand.h') diff --git a/include/llvm/CodeGen/MachineMemOperand.h b/include/llvm/CodeGen/MachineMemOperand.h index d52d7a6be8..dd70b81dd5 100644 --- a/include/llvm/CodeGen/MachineMemOperand.h +++ b/include/llvm/CodeGen/MachineMemOperand.h @@ -88,6 +88,16 @@ public: bool isStore() const { return Flags & MOStore; } bool isVolatile() const { return Flags & MOVolatile; } + /// refineAlignment - Update this MachineMemOperand to reflect the alignment + /// of MMO, if it has a greater alignment. This must only be used when the + /// new alignment applies to all users of this MachineMemOperand. + void refineAlignment(const MachineMemOperand *MMO); + + /// setValue - Change the SourceValue for this MachineMemOperand. This + /// should only be used when an object is being relocated and all references + /// to it are being updated. + void setValue(const Value *NewSV) { V = NewSV; } + /// Profile - Gather unique data for the object. /// void Profile(FoldingSetNodeID &ID) const; -- cgit v1.2.3-18-g5258