From 712ad0c36dcfacb30620c793a6ffe4e80bd5d569 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 13 May 2005 07:08:07 +0000 Subject: allow a virtual register to be associated with live-in values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21927 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/MachineFunction.h | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) (limited to 'include/llvm/CodeGen/MachineFunction.h') diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h index d9afd8d65f..4810742b07 100644 --- a/include/llvm/CodeGen/MachineFunction.h +++ b/include/llvm/CodeGen/MachineFunction.h @@ -108,7 +108,10 @@ class MachineFunction : private Annotation { /// LiveIns/LiveOuts - Keep track of the physical registers that are /// livein/liveout of the function. Live in values are typically arguments in /// registers, live out values are typically return values in registers. - std::vector LiveIns, LiveOuts; + /// LiveIn values are allowed to have virtual registers associated with them, + /// stored in the second element. + std::vector > LiveIns; + std::vector LiveOuts; public: MachineFunction(const Function *Fn, const TargetMachine &TM); @@ -177,16 +180,20 @@ public: /// addLiveIn/Out - Add the specified register as a live in/out. Note that it /// is an error to add the same register to the same set more than once. - void addLiveIn(unsigned Reg) { LiveIns.push_back(Reg); } + void addLiveIn(unsigned Reg, unsigned vreg = 0) { + LiveIns.push_back(std::make_pair(Reg, vreg)); + } void addLiveOut(unsigned Reg) { LiveOuts.push_back(Reg); } // Iteration support for live in/out sets. These sets are kept in sorted // order by their register number. - typedef std::vector::const_iterator liveinout_iterator; - liveinout_iterator livein_begin() const { return LiveIns.begin(); } - liveinout_iterator livein_end() const { return LiveIns.end(); } - liveinout_iterator liveout_begin() const { return LiveOuts.begin(); } - liveinout_iterator liveout_end() const { return LiveOuts.end(); } + typedef std::vector >::const_iterator + livein_iterator; + typedef std::vector::const_iterator liveout_iterator; + livein_iterator livein_begin() const { return LiveIns.begin(); } + livein_iterator livein_end() const { return LiveIns.end(); } + liveout_iterator liveout_begin() const { return LiveOuts.begin(); } + liveout_iterator liveout_end() const { return LiveOuts.end(); } /// getBlockNumbered - MachineBasicBlocks are automatically numbered when they /// are inserted into the machine function. The block number for a machine -- cgit v1.2.3-70-g09d2