[llvm] r268396 - AMDGPU/SI: Use range loops to simplify some code in the SI Scheduler

[Tom Stellard via llvm-commits]

Author: tstellar
Date: Tue May  3 11:30:56 2016
New Revision: 268396

URL: http://llvm.org/viewvc/llvm-project?rev=268396&view=rev
Log:
AMDGPU/SI: Use range loops to simplify some code in the SI Scheduler

Reviewers: arsenm, axeldavy

Subscribers: MatzeB, arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D19822

Modified:
    llvm/trunk/lib/Target/AMDGPU/SIMachineScheduler.cpp

Modified: llvm/trunk/lib/Target/AMDGPU/SIMachineScheduler.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIMachineScheduler.cpp?rev=268396&r1=268395&r2=268396&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIMachineScheduler.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIMachineScheduler.cpp Tue May  3 11:30:56 2016
@@ -713,8 +713,8 @@ void SIScheduleBlockCreator::colorComput
   // Traverse TopDown, and give different colors to SUs depending
   // on which combination of High Latencies they depend on.
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->TopDownIndex2SU[i]];
+  for (unsigned SUNum : DAG->TopDownIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     std::set<unsigned> SUColors;
 
     // Already given.
@@ -755,8 +755,8 @@ void SIScheduleBlockCreator::colorComput
 
   // Same as before, but BottomUp.
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     std::set<unsigned> SUColors;
 
     // Already given.
@@ -827,8 +827,8 @@ void SIScheduleBlockCreator::colorEndsAc
   unsigned DAGSize = DAG->SUnits.size();
   std::vector<int> PendingColoring = CurrentColoring;
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     std::set<unsigned> SUColors;
     std::set<unsigned> SUColorsPending;
 
@@ -894,8 +894,8 @@ void SIScheduleBlockCreator::colorForceC
 void SIScheduleBlockCreator::colorMergeConstantLoadsNextGroup() {
   unsigned DAGSize = DAG->SUnits.size();
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     std::set<unsigned> SUColors;
 
     if (CurrentColoring[SU->NodeNum] <= (int)DAGSize)
@@ -920,8 +920,8 @@ void SIScheduleBlockCreator::colorMergeC
 void SIScheduleBlockCreator::colorMergeIfPossibleNextGroup() {
   unsigned DAGSize = DAG->SUnits.size();
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     std::set<unsigned> SUColors;
 
     if (CurrentColoring[SU->NodeNum] <= (int)DAGSize)
@@ -941,8 +941,8 @@ void SIScheduleBlockCreator::colorMergeI
 void SIScheduleBlockCreator::colorMergeIfPossibleNextGroupOnlyForReserved() {
   unsigned DAGSize = DAG->SUnits.size();
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     std::set<unsigned> SUColors;
 
     if (CurrentColoring[SU->NodeNum] <= (int)DAGSize)
@@ -963,8 +963,8 @@ void SIScheduleBlockCreator::colorMergeI
   unsigned DAGSize = DAG->SUnits.size();
   std::map<unsigned, unsigned> ColorCount;
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     unsigned color = CurrentColoring[SU->NodeNum];
     std::map<unsigned, unsigned>::iterator Pos = ColorCount.find(color);
       if (Pos != ColorCount.end()) {
@@ -974,8 +974,8 @@ void SIScheduleBlockCreator::colorMergeI
       }
   }
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     unsigned color = CurrentColoring[SU->NodeNum];
     std::set<unsigned> SUColors;
 
@@ -1007,8 +1007,8 @@ void SIScheduleBlockCreator::regroupNoUs
   unsigned DAGSize = DAG->SUnits.size();
   int GroupID = NextNonReservedID++;
 
-  for (unsigned i = 0, e = DAGSize; i != e; ++i) {
-    SUnit *SU = &DAG->SUnits[DAG->BottomUpIndex2SU[i]];
+  for (unsigned SUNum : DAG->BottomUpIndex2SU) {
+    SUnit *SU = &DAG->SUnits[SUNum];
     bool hasSuccessor = false;
 
     if (CurrentColoring[SU->NodeNum] <= (int)DAGSize)