Masked Load / Store Intrinsics - the CodeGen part.

[oota-llvm.git] / include / llvm / CodeGen / LiveIntervalAnalysis.h

diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index ddd623c2a33d2a0caafed7ec8bec280fcf782d9d..f9bd31754da9bd491e8efacd926aec3aa2170cf9 100644 (file)
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -17,8 +17,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_CODEGEN_LIVEINTERVAL_ANALYSIS_H
-#define LLVM_CODEGEN_LIVEINTERVAL_ANALYSIS_H
+#ifndef LLVM_CODEGEN_LIVEINTERVALANALYSIS_H
+#define LLVM_CODEGEN_LIVEINTERVALANALYSIS_H
 
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/SmallVector.h"
@@ -50,7 +50,6 @@ namespace llvm {
   class LiveIntervals : public MachineFunctionPass {
     MachineFunction* MF;
     MachineRegisterInfo* MRI;
-    const TargetMachine* TM;
     const TargetRegisterInfo* TRI;
     const TargetInstrInfo* TII;
     AliasAnalysis *AA;
@@ -155,6 +154,17 @@ namespace llvm {
     bool shrinkToUses(LiveInterval *li,
                       SmallVectorImpl<MachineInstr*> *dead = nullptr);
 
+    /// \brief Walk the values in the given interval and compute which ones
+    /// are dead.  Dead values are not deleted, however:
+    /// - Dead PHIDef values are marked as unused.
+    /// - New dead machine instructions are added to the dead vector.
+    /// - CanSeparate is set to true if the interval may have been separated
+    ///   into multiple connected components.
+    void computeDeadValues(LiveInterval *li,
+                           LiveRange &LR,
+                           bool *CanSeparate,
+                           SmallVectorImpl<MachineInstr*> *dead);
+
     /// extendToIndices - Extend the live range of LI to reach all points in
     /// Indices. The points in the Indices array must be jointly dominated by
     /// existing defs in LI. PHI-defs are added as needed to maintain SSA form.