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comparison lib/CodeGen/LiveRangeCalc.h @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
comparison
equal deleted inserted replaced
34:e874dbf0ad9d 77:54457678186b
17 // propagate values down the dominator tree, and even insert PHI-defs where 17 // propagate values down the dominator tree, and even insert PHI-defs where
18 // needed. SplitKit uses this faster interface when possible. 18 // needed. SplitKit uses this faster interface when possible.
19 // 19 //
20 //===----------------------------------------------------------------------===// 20 //===----------------------------------------------------------------------===//
21 21
22 #ifndef LLVM_CODEGEN_LIVERANGECALC_H 22 #ifndef LLVM_LIB_CODEGEN_LIVERANGECALC_H
23 #define LLVM_CODEGEN_LIVERANGECALC_H 23 #define LLVM_LIB_CODEGEN_LIVERANGECALC_H
24 24
25 #include "llvm/ADT/BitVector.h" 25 #include "llvm/ADT/BitVector.h"
26 #include "llvm/ADT/IndexedMap.h" 26 #include "llvm/ADT/IndexedMap.h"
27 #include "llvm/CodeGen/LiveInterval.h" 27 #include "llvm/CodeGen/LiveInterval.h"
28 28
90 90
91 // Live-in value filled in by updateSSA once it is known. 91 // Live-in value filled in by updateSSA once it is known.
92 VNInfo *Value; 92 VNInfo *Value;
93 93
94 LiveInBlock(LiveRange &LR, MachineDomTreeNode *node, SlotIndex kill) 94 LiveInBlock(LiveRange &LR, MachineDomTreeNode *node, SlotIndex kill)
95 : LR(LR), DomNode(node), Kill(kill), Value(0) {} 95 : LR(LR), DomNode(node), Kill(kill), Value(nullptr) {}
96 }; 96 };
97 97
98 /// LiveIn - Work list of blocks where the live-in value has yet to be 98 /// LiveIn - Work list of blocks where the live-in value has yet to be
99 /// determined. This list is typically computed by findReachingDefs() and 99 /// determined. This list is typically computed by findReachingDefs() and
100 /// used as a work list by updateSSA(). The low-level interface may also be 100 /// used as a work list by updateSSA(). The low-level interface may also be
123 123
124 /// Add liveness as specified in the LiveIn vector. 124 /// Add liveness as specified in the LiveIn vector.
125 void updateLiveIns(); 125 void updateLiveIns();
126 126
127 public: 127 public:
128 LiveRangeCalc() : MF(0), MRI(0), Indexes(0), DomTree(0), Alloc(0) {} 128 LiveRangeCalc() : MF(nullptr), MRI(nullptr), Indexes(nullptr),
129 DomTree(nullptr), Alloc(nullptr) {}
129 130
130 //===--------------------------------------------------------------------===// 131 //===--------------------------------------------------------------------===//
131 // High-level interface. 132 // High-level interface.
132 //===--------------------------------------------------------------------===// 133 //===--------------------------------------------------------------------===//
133 // 134 //
201 /// 202 ///
202 /// VNI may be null only if MBB is a live-through block also passed to 203 /// VNI may be null only if MBB is a live-through block also passed to
203 /// addLiveInBlock(). 204 /// addLiveInBlock().
204 void setLiveOutValue(MachineBasicBlock *MBB, VNInfo *VNI) { 205 void setLiveOutValue(MachineBasicBlock *MBB, VNInfo *VNI) {
205 Seen.set(MBB->getNumber()); 206 Seen.set(MBB->getNumber());
206 LiveOut[MBB] = LiveOutPair(VNI, (MachineDomTreeNode *)0); 207 LiveOut[MBB] = LiveOutPair(VNI, nullptr);
207 } 208 }
208 209
209 /// addLiveInBlock - Add a block with an unknown live-in value. This 210 /// addLiveInBlock - Add a block with an unknown live-in value. This
210 /// function can only be called once per basic block. Once the live-in value 211 /// function can only be called once per basic block. Once the live-in value
211 /// has been determined, calculateValues() will add liveness to LI. 212 /// has been determined, calculateValues() will add liveness to LI.