Use std::vector instead of a hard-coded array. The length of that array could

get *very* large, but we only need it to be the size of the number of pregs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108412 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 6 deletions

diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.h b/lib/CodeGen/AggressiveAntiDepBreaker.h
index 91ebb850d1..f49ffcb0ab 100644
--- a/lib/CodeGen/AggressiveAntiDepBreaker.h
+++ b/lib/CodeGen/AggressiveAntiDepBreaker.h
@@ -24,12 +24,14 @@
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/ScheduleDAG.h"
 #include "llvm/Target/TargetSubtarget.h"
-#include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/SmallSet.h"
 #include <map>
+#include <vector>
 
 namespace llvm {
+  class TargetRegisterInfo;
+
   /// Class AggressiveAntiDepState
   /// Contains all the state necessary for anti-dep breaking.
   class AggressiveAntiDepState {
@@ -59,27 +61,27 @@ namespace llvm {
     /// currently representing the group that the register belongs to.
     /// Register 0 is always represented by the 0 group, a group
     /// composed of registers that are not eligible for anti-aliasing.
-    unsigned GroupNodeIndices[TargetRegisterInfo::FirstVirtualRegister];
+    std::vector<unsigned> GroupNodeIndices;
 
     /// RegRefs - Map registers to all their references within a live range.
     std::multimap<unsigned, RegisterReference> RegRefs;
 
     /// KillIndices - The index of the most recent kill (proceding bottom-up),
     /// or ~0u if the register is not live.
-    unsigned KillIndices[TargetRegisterInfo::FirstVirtualRegister];
+    std::vector<unsigned> KillIndices;
 
     /// DefIndices - The index of the most recent complete def (proceding bottom
     /// up), or ~0u if the register is live.
-    unsigned DefIndices[TargetRegisterInfo::FirstVirtualRegister];
+    std::vector<unsigned> DefIndices;
 
   public:
     AggressiveAntiDepState(const unsigned TargetRegs, MachineBasicBlock *BB);
 
     /// GetKillIndices - Return the kill indices.
-    unsigned *GetKillIndices() { return KillIndices; }
+    std::vector<unsigned> &GetKillIndices() { return KillIndices; }
 
     /// GetDefIndices - Return the define indices.
-    unsigned *GetDefIndices() { return DefIndices; }
+    std::vector<unsigned> &GetDefIndices() { return DefIndices; }
 
     /// GetRegRefs - Return the RegRefs map.
     std::multimap<unsigned, RegisterReference>& GetRegRefs() { return RegRefs; }