commit f81af21caf9c0f62c60b72762d9a927e8c24f679
author Alkis Evlogimenos <alkis@evlogimenos.com> Sat Feb 14 01:18:34 2004 +0000
committer Alkis Evlogimenos <alkis@evlogimenos.com> Sat Feb 14 01:18:34 2004 +0000
tree 6b7865d9540825fa4d391794ff356793a5dfc235
parent bc79471be19e412eed4d270908db7ac945be10ca

Use newly added next() and prior() utility functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11430 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/PHIElimination.cpp

diff --git a/lib/CodeGen/PHIElimination.cpp b/lib/CodeGen/PHIElimination.cpp
index e0025f9..0630582 100644
--- a/lib/CodeGen/PHIElimination.cpp
+++ b/lib/CodeGen/PHIElimination.cpp
@@ -20,6 +20,7 @@
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/CFG.h"
+#include "Support/STLExtras.h"
 
 namespace llvm {
 
@@ -171,8 +172,7 @@
       bool HaveNotEmitted = true;
       
       if (I != opBlock.begin()) {
-        MachineBasicBlock::iterator PrevInst = I;
-        --PrevInst;
+        MachineBasicBlock::iterator PrevInst = prior(I);
         for (unsigned i = 0, e = PrevInst->getNumOperands(); i != e; ++i) {
           MachineOperand &MO = PrevInst->getOperand(i);
           if (MO.isRegister() && MO.getReg() == IncomingReg)
@@ -253,8 +253,7 @@
           // kills the incoming value!
           //
           if (!ValueIsLive) {
-            MachineBasicBlock::iterator Prev = I;
-            --Prev;
+            MachineBasicBlock::iterator Prev = prior(I);
             LV->addVirtualRegisterKilled(SrcReg, &opBlock, Prev);
           }
         }