Fix comments in PhysRegTracker and rename isPhysRegAvail to isRegAvail to be consistent with the other two

llvm-svn: 11723

2 files changed, 6 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/PhysRegTracker.h b/llvm/lib/CodeGen/PhysRegTracker.h
index 36128c65a88..d2ff82a237d 100644
--- a/llvm/lib/CodeGen/PhysRegTracker.h
+++ b/llvm/lib/CodeGen/PhysRegTracker.h
@@ -1,4 +1,4 @@
-//===-- llvm/CodeGen/LiveInterval.h - Live Interval Analysis ----*- C++ -*-===//
+//===-- llvm/CodeGen/PhysRegTracker.h - Physical Register Tracker -*- C++ -*-=//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -8,8 +8,9 @@
 //===----------------------------------------------------------------------===//
 //
 // This file implements a physical register tracker. The tracker
-// tracks physical register usage through addPhysRegUse and
-// delPhysRegUse functions while abstracting away register aliases.
+// tracks physical register usage through addRegUse and
+// delRegUse. isRegAvail checks if a physical register is available or
+// not taking into consideration register aliases.
 //
 //===----------------------------------------------------------------------===//
 
@@ -67,7 +68,7 @@ namespace llvm {
             }
         }
 
-        bool isPhysRegAvail(unsigned physReg) const {
+        bool isRegAvail(unsigned physReg) const {
             assert(MRegisterInfo::isPhysicalRegister(physReg) &&
                    "should be physical register!");
             return regUse_[physReg] == 0;
diff --git a/llvm/lib/CodeGen/RegAllocLinearScan.cpp b/llvm/lib/CodeGen/RegAllocLinearScan.cpp
index 728c0182c48..0a4077fa159 100644
--- a/llvm/lib/CodeGen/RegAllocLinearScan.cpp
+++ b/llvm/lib/CodeGen/RegAllocLinearScan.cpp
@@ -706,7 +706,7 @@ unsigned RA::getFreePhysReg(IntervalPtrs::value_type cur)
     for (TargetRegisterClass::iterator i = rc->allocation_order_begin(*mf_);
          i != rc->allocation_order_end(*mf_); ++i) {
         unsigned reg = *i;
-        if (prt_.isPhysRegAvail(reg))
+        if (prt_.isRegAvail(reg))
             return reg;
     }
     return 0;