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author | Dan Gohman <gohman@apple.com> | 2008-11-19 23:18:57 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2008-11-19 23:18:57 +0000 |
commit | 343f0c046702831a4a6aec951b6a297a23241a55 (patch) | |
tree | 2f3b2796fd768abcb439099629af7cf407a61693 /lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp | |
parent | 7d1cd3f21d68179f4ebf4ee18fb7a0ddca9c5a37 (diff) | |
download | external_llvm-343f0c046702831a4a6aec951b6a297a23241a55.zip external_llvm-343f0c046702831a4a6aec951b6a297a23241a55.tar.gz external_llvm-343f0c046702831a4a6aec951b6a297a23241a55.tar.bz2 |
Experimental post-pass scheduling support. Post-pass scheduling
is currently off by default, and can be enabled with
-disable-post-RA-scheduler=false.
This doesn't have a significant impact on most code yet because it doesn't
yet do anything to address anti-dependencies and it doesn't attempt to
disambiguate memory references. Also, several popular targets
don't have pipeline descriptions yet.
The majority of the changes here are splitting the SelectionDAG-specific
code out of ScheduleDAG, so that ScheduleDAG can be moved to
libLLVMCodeGen.a. The interface between ScheduleDAG-using code and
the rest of the scheduling code is somewhat rough and will evolve.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59676 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp index c2c9110..e1a24a1 100644 --- a/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp +++ b/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp @@ -19,7 +19,8 @@ //===----------------------------------------------------------------------===// #define DEBUG_TYPE "pre-RA-sched" -#include "llvm/CodeGen/ScheduleDAG.h" +#include "llvm/CodeGen/LatencyPriorityQueue.h" +#include "llvm/CodeGen/ScheduleDAGSDNodes.h" #include "llvm/CodeGen/SchedulerRegistry.h" #include "llvm/CodeGen/SelectionDAGISel.h" #include "llvm/Target/TargetRegisterInfo.h" @@ -30,7 +31,6 @@ #include "llvm/Support/Compiler.h" #include "llvm/ADT/PriorityQueue.h" #include "llvm/ADT/Statistic.h" -#include "LatencyPriorityQueue.h" #include <climits> using namespace llvm; @@ -46,7 +46,7 @@ namespace { /// ScheduleDAGList - The actual list scheduler implementation. This supports /// top-down scheduling. /// -class VISIBILITY_HIDDEN ScheduleDAGList : public ScheduleDAG { +class VISIBILITY_HIDDEN ScheduleDAGList : public ScheduleDAGSDNodes { private: /// AvailableQueue - The priority queue to use for the available SUnits. /// @@ -66,7 +66,7 @@ public: const TargetMachine &tm, SchedulingPriorityQueue *availqueue, HazardRecognizer *HR) - : ScheduleDAG(dag, bb, tm), + : ScheduleDAGSDNodes(dag, bb, tm), AvailableQueue(availqueue), HazardRec(HR) { } @@ -212,13 +212,13 @@ void ScheduleDAGList::ListScheduleTopDown() { if (!N) break; FoundNode = N; } - + HazardRecognizer::HazardType HT = HazardRec->getHazardType(FoundNode); if (HT == HazardRecognizer::NoHazard) { FoundSUnit = CurSUnit; break; } - + // Remember if this is a noop hazard. HasNoopHazards |= HT == HazardRecognizer::NoopHazard; |