[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen: LiveVariables.h updated: 1.46 - 1.47 --- Log message: Properly handle kills of a physical register which has sub-registers that are read by later instructions. --- Diffs of the changes: (+10 -0) LiveVariables.h | 10 ++ 1 files changed, 10 insertions(+) Index: llvm/include/llvm/CodeGen/LiveVariables.h diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.46 llvm/include/llvm/CodeGen/LiveVariables.h:1.47 --- llvm/include/llvm/CodeGen/LiveVariables.h:1.46 Tue May 8 14:00:00 2007 +++ llvm/include/llvm/CodeGen/LiveVariables.h Tue Jun 26 16:02:59 2007 @@ -31,6 +31,7 @@ #include llvm/CodeGen/MachineFunctionPass.h #include llvm/ADT/BitVector.h +#include llvm/ADT/SmallSet.h #include llvm/ADT/SmallVector.h #include map @@ -163,6 +164,15 @@ bool addRegisterDead(unsigned IncomingReg, MachineInstr *MI, bool AddIfNotFound = false); + void addRegisterKills(unsigned Reg, MachineInstr *MI, +SmallSetunsigned, 4 SubKills); + + /// HandlePhysRegKill - Add kills of Reg and its sub-registers to the + /// uses. Pay special attention to the sub-register uses which may come below + /// the last use of the whole register. + bool HandlePhysRegKill(unsigned Reg, MachineInstr *MI, + SmallSetunsigned, 4 SubKills); + bool HandlePhysRegKill(unsigned Reg, MachineInstr *MI); void HandlePhysRegUse(unsigned Reg, MachineInstr *MI); void HandlePhysRegDef(unsigned Reg, MachineInstr *MI); ___ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen: LiveVariables.h updated: 1.45 - 1.46 --- Log message: Eliminate MarkVirtRegAliveInBlock recursion. --- Diffs of the changes: (+2 -0) LiveVariables.h |2 ++ 1 files changed, 2 insertions(+) Index: llvm/include/llvm/CodeGen/LiveVariables.h diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.45 llvm/include/llvm/CodeGen/LiveVariables.h:1.46 --- llvm/include/llvm/CodeGen/LiveVariables.h:1.45 Sun May 6 08:37:16 2007 +++ llvm/include/llvm/CodeGen/LiveVariables.h Tue May 8 14:00:00 2007 @@ -283,6 +283,8 @@ VarInfo getVarInfo(unsigned RegIdx); void MarkVirtRegAliveInBlock(VarInfo VRInfo, MachineBasicBlock *BB); + void MarkVirtRegAliveInBlock(VarInfo VRInfo, MachineBasicBlock *BB, + std::vectorMachineBasicBlock* WorkList); void HandleVirtRegUse(VarInfo VRInfo, MachineBasicBlock *MBB, MachineInstr *MI); }; ___ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.39 - 1.40
---
Log message:
Data structure change to improve compile time (especially in debug mode).
---
Diffs of the changes: (+10 -14)
LiveVariables.h | 24 ++--
1 files changed, 10 insertions(+), 14 deletions(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.39
llvm/include/llvm/CodeGen/LiveVariables.h:1.40
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.39 Wed Apr 25 02:30:23 2007
+++ llvm/include/llvm/CodeGen/LiveVariables.h Wed Apr 25 14:34:00 2007
@@ -31,12 +31,12 @@
#include llvm/CodeGen/MachineFunctionPass.h
#include llvm/ADT/BitVector.h
+#include llvm/ADT/SmallVector.h
#include map
namespace llvm {
class MRegisterInfo;
-class BitVector;
class LiveVariables : public MachineFunctionPass {
public:
@@ -127,28 +127,24 @@
// PhysRegInfo - Keep track of which instruction was the last def/use of a
// physical register. This is a purely local property, because all physical
// register references as presumed dead across basic blocks.
- std::vectorMachineInstr* PhysRegInfo;
+ MachineInstr **PhysRegInfo;
// PhysRegUsed - Keep track whether the physical register has been used after
// its last definition. This is local property.
- BitVector PhysRegUsed;
-
- // PhysRegPartDef - Keep track of a list of instructions which partially
- // defined the physical register (e.g. on X86 AX partially defines EAX).
- // These are turned into use/mod/write if there is a use of the register
- // later in the same block. This is local property.
- std::vectorstd::vectorMachineInstr* PhysRegPartDef;
+ bool *PhysRegUsed;
// PhysRegPartUse - Keep track of which instruction was the last partial use
// of a physical register (e.g. on X86 a def of EAX followed by a use of AX).
// This is a purely local property.
- std::vectorMachineInstr* PhysRegPartUse;
+ MachineInstr **PhysRegPartUse;
- typedef std::mapconst MachineBasicBlock*,
- std::vectorunsigned PHIVarInfoMap;
-
- PHIVarInfoMap PHIVarInfo;
+ // PhysRegPartDef - Keep track of a list of instructions which partially
+ // defined the physical register (e.g. on X86 AX partially defines EAX).
+ // These are turned into use/mod/write if there is a use of the register
+ // later in the same block. This is local property.
+ SmallVectorMachineInstr*, 4 *PhysRegPartDef;
+ SmallVectorunsigned, 4 *PHIVarInfo;
/// addRegisterKilled - We have determined MI kills a register. Look for the
/// operand that uses it and mark it as IsKill.
___
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[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.40 - 1.41
---
Log message:
Be careful when to add implicit kill / dead operands. Don't add them during /
post reg-allocation.
---
Diffs of the changes: (+22 -14)
LiveVariables.h | 36 ++--
1 files changed, 22 insertions(+), 14 deletions(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.40
llvm/include/llvm/CodeGen/LiveVariables.h:1.41
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.40 Wed Apr 25 14:34:00 2007
+++ llvm/include/llvm/CodeGen/LiveVariables.h Wed Apr 25 20:40:09 2007
@@ -147,12 +147,18 @@
SmallVectorunsigned, 4 *PHIVarInfo;
/// addRegisterKilled - We have determined MI kills a register. Look for the
- /// operand that uses it and mark it as IsKill.
- void addRegisterKilled(unsigned IncomingReg, MachineInstr *MI);
+ /// operand that uses it and mark it as IsKill. If AddIfNotFound is true,
+ /// add a implicit operand if it's not found. Returns true if the operand
+ /// exists / is added.
+ bool addRegisterKilled(unsigned IncomingReg, MachineInstr *MI,
+ bool AddIfNotFound = false);
/// addRegisterDead - We have determined MI defined a register without a use.
- /// Look for the operand that defines it and mark it as IsDead.
- void addRegisterDead(unsigned IncomingReg, MachineInstr *MI);
+ /// Look for the operand that defines it and mark it as IsDead. If
+ /// AddIfNotFound is true, add a implicit operand if it's not found. Returns
+ /// true if the operand exists / is added.
+ bool addRegisterDead(unsigned IncomingReg, MachineInstr *MI,
+ bool AddIfNotFound = false);
void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
void HandlePhysRegDef(unsigned Reg, MachineInstr *MI);
@@ -189,11 +195,12 @@
/// addVirtualRegisterKilled - Add information about the fact that the
/// specified register is killed after being used by the specified
- /// instruction.
- ///
- void addVirtualRegisterKilled(unsigned IncomingReg, MachineInstr *MI) {
-addRegisterKilled(IncomingReg, MI);
-getVarInfo(IncomingReg).Kills.push_back(MI);
+ /// instruction. If AddIfNotFound is true, add a implicit operand if it's
+ /// not found.
+ void addVirtualRegisterKilled(unsigned IncomingReg, MachineInstr *MI,
+bool AddIfNotFound = false) {
+if (addRegisterKilled(IncomingReg, MI, AddIfNotFound))
+ getVarInfo(IncomingReg).Kills.push_back(MI);
}
/// removeVirtualRegisterKilled - Remove the specified virtual
@@ -225,11 +232,12 @@
void removeVirtualRegistersKilled(MachineInstr *MI);
/// addVirtualRegisterDead - Add information about the fact that the
specified
- /// register is dead after being used by the specified instruction.
- ///
- void addVirtualRegisterDead(unsigned IncomingReg, MachineInstr *MI) {
-addRegisterDead(IncomingReg, MI);
-getVarInfo(IncomingReg).Kills.push_back(MI);
+ /// register is dead after being used by the specified instruction. If
+ /// AddIfNotFound is true, add a implicit operand if it's not found.
+ void addVirtualRegisterDead(unsigned IncomingReg, MachineInstr *MI,
+ bool AddIfNotFound = false) {
+if (addRegisterDead(IncomingReg, MI, AddIfNotFound))
+getVarInfo(IncomingReg).Kills.push_back(MI);
}
/// removeVirtualRegisterDead - Remove the specified virtual
___
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[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.36 - 1.37
---
Log message:
Keep track of number of uses within the function per virtual register.
---
Diffs of the changes: (+5 -1)
LiveVariables.h |6 +-
1 files changed, 5 insertions(+), 1 deletion(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.36
llvm/include/llvm/CodeGen/LiveVariables.h:1.37
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.36 Sat Mar 17 04:29:54 2007
+++ llvm/include/llvm/CodeGen/LiveVariables.h Tue Apr 17 15:22:11 2007
@@ -83,12 +83,16 @@
/// is a bit set which uses the basic block number as an index.
BitVector UsedBlocks;
+/// NumUses - Number of uses of this register across the entire function.
+///
+unsigned NumUses;
+
/// Kills - List of MachineInstruction's which are the last use of this
/// virtual register (kill it) in their basic block.
///
std::vectorMachineInstr* Kills;
-VarInfo() : DefInst(0) {}
+VarInfo() : DefInst(0), NumUses(0) {}
/// removeKill - Delete a kill corresponding to the specified
/// machine instruction. Returns true if there was a kill
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[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen: LiveVariables.h updated: 1.37 - 1.38 --- Log message: VarInfo::UsedBlocks is no longer used. Remove. --- Diffs of the changes: (+0 -4) LiveVariables.h |4 1 files changed, 4 deletions(-) Index: llvm/include/llvm/CodeGen/LiveVariables.h diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.37 llvm/include/llvm/CodeGen/LiveVariables.h:1.38 --- llvm/include/llvm/CodeGen/LiveVariables.h:1.37 Tue Apr 17 15:22:11 2007 +++ llvm/include/llvm/CodeGen/LiveVariables.h Wed Apr 18 00:04:38 2007 @@ -79,10 +79,6 @@ /// BitVector AliveBlocks; -/// UsedBlocks - Set of blocks of which this value is actually used. This -/// is a bit set which uses the basic block number as an index. -BitVector UsedBlocks; - /// NumUses - Number of uses of this register across the entire function. /// unsigned NumUses; ___ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen: LiveVariables.h updated: 1.35 - 1.36 --- Log message: Track the BB's where each virtual register is used. --- Diffs of the changes: (+6 -0) LiveVariables.h |6 ++ 1 files changed, 6 insertions(+) Index: llvm/include/llvm/CodeGen/LiveVariables.h diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.35 llvm/include/llvm/CodeGen/LiveVariables.h:1.36 --- llvm/include/llvm/CodeGen/LiveVariables.h:1.35 Mon Feb 19 15:49:53 2007 +++ llvm/include/llvm/CodeGen/LiveVariables.h Sat Mar 17 04:29:54 2007 @@ -79,6 +79,10 @@ /// BitVector AliveBlocks; +/// UsedBlocks - Set of blocks of which this value is actually used. This +/// is a bit set which uses the basic block number as an index. +BitVector UsedBlocks; + /// Kills - List of MachineInstruction's which are the last use of this /// virtual register (kill it) in their basic block. /// @@ -116,6 +120,8 @@ BitVector ReservedRegisters; private: // Intermediate data structures + MachineFunction *MF; + const MRegisterInfo *RegInfo; MachineInstr **PhysRegInfo; ___ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.32 - 1.33
---
Log message:
Allow LiveVariables to track liveness of more registers.
---
Diffs of the changes: (+5 -4)
LiveVariables.h |9 +
1 files changed, 5 insertions(+), 4 deletions(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.32
llvm/include/llvm/CodeGen/LiveVariables.h:1.33
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.32 Wed Feb 14 23:57:14 2007
+++ llvm/include/llvm/CodeGen/LiveVariables.h Sat Feb 17 05:07:08 2007
@@ -36,6 +36,7 @@
namespace llvm {
class MRegisterInfo;
+class BitVector;
class LiveVariables : public MachineFunctionPass {
public:
@@ -108,11 +109,11 @@
///
std::vectorVarInfo VirtRegInfo;
- /// AllocatablePhysicalRegisters - This vector keeps track of which registers
- /// are actually register allocatable by the target machine. We can not
track
- /// liveness for values that are not in this set.
+ /// ReservedRegisters - This vector keeps track of which registers
+ /// are reserved register which are not allocatable by the target machine.
+ /// We can not track liveness for values that are in this set.
///
- BitVector AllocatablePhysicalRegisters;
+ BitVector ReservedRegisters;
private: // Intermediate data structures
const MRegisterInfo *RegInfo;
___
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[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.30 - 1.31
---
Log message:
Do away with kill / dead maps. Move kill / dead info onto MI's.
---
Diffs of the changes: (+36 -95)
LiveVariables.h | 131 +++-
1 files changed, 36 insertions(+), 95 deletions(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.30
llvm/include/llvm/CodeGen/LiveVariables.h:1.31
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.30 Tue Oct 3 02:20:20 2006
+++ llvm/include/llvm/CodeGen/LiveVariables.h Wed Nov 15 14:47:31 2006
@@ -107,23 +107,6 @@
///
std::vectorVarInfo VirtRegInfo;
- /// RegistersKilled - This map keeps track of all of the registers that
- /// are dead immediately after an instruction reads its operands. If an
- /// instruction does not have an entry in this map, it kills no registers.
- ///
- std::mapMachineInstr*, std::vectorunsigned RegistersKilled;
-
- /// RegistersDead - This map keeps track of all of the registers that are
- /// dead immediately after an instruction executes, which are not dead after
- /// the operands are evaluated. In practice, this only contains registers
- /// which are defined by an instruction, but never used.
- ///
- std::mapMachineInstr*, std::vectorunsigned RegistersDead;
-
- /// Dummy - An always empty vector used for instructions without dead or
- /// killed operands.
- std::vectorunsigned Dummy;
-
/// AllocatablePhysicalRegisters - This vector keeps track of which registers
/// are actually register allocatable by the target machine. We can not
track
/// liveness for values that are not in this set.
@@ -141,6 +124,15 @@
PHIVarInfoMap PHIVarInfo;
+
+ /// addRegisterKilled - We have determined MI kills a register. Look for the
+ /// operand that uses it and mark it as IsKill.
+ void addRegisterKilled(unsigned IncomingReg, MachineInstr *MI);
+
+ /// addRegisterDead - We have determined MI defined a register without a use.
+ /// Look for the operand that defines it and mark it as IsDead.
+ void addRegisterDead(unsigned IncomingReg, MachineInstr *MI);
+
void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
void HandlePhysRegDef(unsigned Reg, MachineInstr *MI);
@@ -153,55 +145,17 @@
virtual bool runOnMachineFunction(MachineFunction MF);
- /// killed_iterator - Iterate over registers killed by a machine instruction
- ///
- typedef std::vectorunsigned::iterator killed_iterator;
-
- std::vectorunsigned getKillsVector(MachineInstr *MI) {
-std::mapMachineInstr*, std::vectorunsigned ::iterator I =
- RegistersKilled.find(MI);
-return I != RegistersKilled.end() ? I-second : Dummy;
- }
- std::vectorunsigned getDeadDefsVector(MachineInstr *MI) {
-std::mapMachineInstr*, std::vectorunsigned ::iterator I =
- RegistersDead.find(MI);
-return I != RegistersDead.end() ? I-second : Dummy;
- }
-
-
- /// killed_begin/end - Get access to the range of registers killed by a
- /// machine instruction.
- killed_iterator killed_begin(MachineInstr *MI) {
-return getKillsVector(MI).begin();
- }
- killed_iterator killed_end(MachineInstr *MI) {
-return getKillsVector(MI).end();
- }
- std::pairkilled_iterator, killed_iterator
- killed_range(MachineInstr *MI) {
-std::vectorunsigned V = getKillsVector(MI);
-return std::make_pair(V.begin(), V.end());
- }
-
/// KillsRegister - Return true if the specified instruction kills the
/// specified register.
bool KillsRegister(MachineInstr *MI, unsigned Reg) const;
- killed_iterator dead_begin(MachineInstr *MI) {
-return getDeadDefsVector(MI).begin();
- }
- killed_iterator dead_end(MachineInstr *MI) {
-return getDeadDefsVector(MI).end();
- }
- std::pairkilled_iterator, killed_iterator
- dead_range(MachineInstr *MI) {
-std::vectorunsigned V = getDeadDefsVector(MI);
-return std::make_pair(V.begin(), V.end());
- }
-
/// RegisterDefIsDead - Return true if the specified instruction defines the
/// specified register, but that definition is dead.
bool RegisterDefIsDead(MachineInstr *MI, unsigned Reg) const;
+
+ /// ModifiesRegister - Return true if the specified instruction modifies the
+ /// specified register.
+ bool ModifiesRegister(MachineInstr *MI, unsigned Reg) const;
//======//
// API to update live variable information
@@ -217,19 +171,9 @@
/// instruction.
///
void addVirtualRegisterKilled(unsigned IncomingReg, MachineInstr *MI) {
-std::vectorunsigned V = RegistersKilled[MI];
-// Insert in a sorted order.
-if (V.empty() || IncomingReg V.back()) {
- V.push_back(IncomingReg);
-} else {
- std::vectorunsigned::iterator I = V.begin();
- for (; *I IncomingReg; ++I)
-/*empty*/;
- if (*I != IncomingReg) // Don't insert
[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.29 - 1.30
---
Log message:
Fix for PR929: http://llvm.org/PR929 . The PHI nodes were being gone through
for each instruction
in a successor block for every block...resulting in some O(N^k) algorithm
which wasn't very good for performance. Calculating this information up
front and keeping it in a map made it much faster.
---
Diffs of the changes: (+11 -1)
LiveVariables.h | 12 +++-
1 files changed, 11 insertions(+), 1 deletion(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.29
llvm/include/llvm/CodeGen/LiveVariables.h:1.30
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.29 Sat Sep 2 19:05:09 2006
+++ llvm/include/llvm/CodeGen/LiveVariables.h Tue Oct 3 02:20:20 2006
@@ -39,7 +39,7 @@
class LiveVariables : public MachineFunctionPass {
public:
/// VarInfo - This represents the regions where a virtual register is live in
- /// the program. We represent this with three difference pieces of
+ /// the program. We represent this with three different pieces of
/// information: the instruction that uniquely defines the value, the set of
/// blocks the instruction is live into and live out of, and the set of
/// non-phi instructions that are the last users of the value.
@@ -136,9 +136,19 @@
MachineInstr **PhysRegInfo;
bool *PhysRegUsed;
+ typedef std::mapconst MachineBasicBlock*,
+ std::vectorunsigned PHIVarInfoMap;
+
+ PHIVarInfoMap PHIVarInfo;
+
void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
void HandlePhysRegDef(unsigned Reg, MachineInstr *MI);
+ /// analyzePHINodes - Gather information about the PHI nodes in here. In
+ /// particular, we want to map the variable information of a virtual
+ /// register which is used in a PHI node. We map that to the BB the vreg
+ /// is coming from.
+ void analyzePHINodes(const MachineFunction Fn);
public:
virtual bool runOnMachineFunction(MachineFunction MF);
___
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[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.28 - 1.29
---
Log message:
Move two methods out of line, make them work when the record for a machine
instruction includes physregs.
---
Diffs of the changes: (+6 -28)
LiveVariables.h | 34 ++
1 files changed, 6 insertions(+), 28 deletions(-)
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.28
llvm/include/llvm/CodeGen/LiveVariables.h:1.29
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.28 Wed Jan 4 01:29:33 2006
+++ llvm/include/llvm/CodeGen/LiveVariables.h Sat Sep 2 19:05:09 2006
@@ -242,19 +242,8 @@
/// removeVirtualRegistersKilled - Remove all killed info for the specified
/// instruction.
- void removeVirtualRegistersKilled(MachineInstr *MI) {
-std::mapMachineInstr*, std::vectorunsigned ::iterator I =
- RegistersKilled.find(MI);
-if (I != RegistersKilled.end()) {
- std::vectorunsigned Regs = I-second;
- for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
-bool removed = getVarInfo(Regs[i]).removeKill(MI);
-assert(removed kill not in register's VarInfo?);
- }
- RegistersKilled.erase(I);
-}
- }
-
+ void removeVirtualRegistersKilled(MachineInstr *MI);
+
/// addVirtualRegisterDead - Add information about the fact that the
specified
/// register is dead after being used by the specified instruction.
///
@@ -292,21 +281,10 @@
return true;
}
- /// removeVirtualRegistersDead - Remove all of the specified dead
- /// registers from the live variable information.
- void removeVirtualRegistersDead(MachineInstr *MI) {
-std::mapMachineInstr*, std::vectorunsigned ::iterator I =
- RegistersDead.find(MI);
-if (I != RegistersDead.end()) {
- std::vectorunsigned Regs = I-second;
- for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
-bool removed = getVarInfo(Regs[i]).removeKill(MI);
-assert(removed kill not in register's VarInfo?);
- }
- RegistersDead.erase(I);
-}
- }
-
+ /// removeVirtualRegistersDead - Remove all of the dead registers for the
+ /// specified instruction from the live variable information.
+ void removeVirtualRegistersDead(MachineInstr *MI);
+
virtual void getAnalysisUsage(AnalysisUsage AU) const {
AU.setPreservesAll();
}
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