From 7d3041e060adfd1f4054f45581bb01a4b9920f56 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 17 Sep 2005 01:02:45 +0000 Subject: [PATCH] add a new callback git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23373 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Target/MRegisterInfo.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h index 12e28c0dad5..9ddb4953f78 100644 --- a/include/llvm/Target/MRegisterInfo.h +++ b/include/llvm/Target/MRegisterInfo.h @@ -250,6 +250,14 @@ public: unsigned DestReg, unsigned SrcReg, const TargetRegisterClass *RC) const = 0; + /// isLoadFromStackSlot - If the specified machine instruction is a direct + /// load from a stack slot, return the virtual or physical register number of + /// the destination along with the FrameIndex of the loaded stack slot. If + /// not, return 0. This predicate must return false if the instruction has + /// any side effects other than loading from the stack slot. + virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const{ + return 0; + } /// foldMemoryOperand - Attempt to fold a load or store of the /// specified stack slot into the specified machine instruction for -- 2.34.1