Use back() instead of [size()-1].

[oota-llvm.git] / lib / CodeGen / PrologEpilogInserter.cpp

diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index cb9916ce6812edf7a956e01601e4e52ed4341c76..c52da321c1e9a05e922486ff70c1a21f279bc3a7 100644 (file)
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -68,7 +68,7 @@ namespace {
 
       // Allow the target machine to make final modifications to the function
       // before the frame layout is finalized.
-      Fn.getTarget().getRegisterInfo()->processFunctionBeforeFrameFinalized(Fn);
+      TRI->processFunctionBeforeFrameFinalized(Fn);
 
       // Calculate actual frame offsets for all of the abstract stack objects...
       calculateFrameObjectOffsets(Fn);
@@ -313,7 +313,7 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
   // Loop over all of the stack objects, assigning sequential addresses...
   MachineFrameInfo *FFI = Fn.getFrameInfo();
 
-  unsigned MaxAlign = 0;
+  unsigned MaxAlign = FFI->getMaxAlignment();
 
   // Start at the beginning of the local area.
   // The Offset is the distance from the stack top in the direction
@@ -362,7 +362,8 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
       FFI->setObjectOffset(i, -Offset);        // Set the computed offset
     }
   } else {
-    for (unsigned i = MaxCSFrameIndex; i >= MinCSFrameIndex; --i) {
+    int MaxCSFI = MaxCSFrameIndex, MinCSFI = MinCSFrameIndex;
+    for (int i = MaxCSFI; i >= MinCSFI ; --i) {
       unsigned Align = FFI->getObjectAlignment(i);
       // If the alignment of this object is greater than that of the stack, then
       // increase the stack alignment to match.
@@ -484,14 +485,16 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
 /// prolog and epilog code to the function.
 ///
 void PEI::insertPrologEpilogCode(MachineFunction &Fn) {
+  const TargetRegisterInfo *TRI = Fn.getTarget().getRegisterInfo();
+
   // Add prologue to the function...
-  Fn.getTarget().getRegisterInfo()->emitPrologue(Fn);
+  TRI->emitPrologue(Fn);
 
   // Add epilogue to restore the callee-save registers in each exiting block
   for (MachineFunction::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) {
     // If last instruction is a return instruction, add an epilogue
     if (!I->empty() && I->back().getDesc().isReturn())
-      Fn.getTarget().getRegisterInfo()->emitEpilogue(Fn, *I);
+      TRI->emitEpilogue(Fn, *I);
   }
 }