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| author | Evan Cheng <evan.cheng@apple.com> | 2009-02-10 08:30:11 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-02-10 08:30:11 +0000 |
| commit | ce3bbe515b30b8d2c8ab6efd72e411ce6921066a (patch) | |
| tree | 6a39fec4cb4c2c176670862c01eb3726e0172b46 /llvm/lib/CodeGen/SelectionDAG | |
| parent | 4bed3565f3abecb4cfd0bda86765b95751db864b (diff) | |
| download | bcm5719-llvm-ce3bbe515b30b8d2c8ab6efd72e411ce6921066a.tar.gz bcm5719-llvm-ce3bbe515b30b8d2c8ab6efd72e411ce6921066a.zip | |
Fix PR3457: Ignore control successors when looking for closest scheduled successor. A control successor doesn't read result(s) produced by the scheduling unit being evaluated.
llvm-svn: 64210
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp index bff85704e06..16102f342f4 100644 --- a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp @@ -30,7 +30,6 @@ #include "llvm/ADT/Statistic.h" #include "llvm/ADT/STLExtras.h" #include <climits> -#include "llvm/Support/CommandLine.h" using namespace llvm; STATISTIC(NumBacktracks, "Number of times scheduler backtracked"); @@ -1047,6 +1046,7 @@ static unsigned closestSucc(const SUnit *SU) { unsigned MaxHeight = 0; for (SUnit::const_succ_iterator I = SU->Succs.begin(), E = SU->Succs.end(); I != E; ++I) { + if (I->isCtrl()) continue; // ignore chain succs unsigned Height = I->getSUnit()->getHeight(); // If there are bunch of CopyToRegs stacked up, they should be considered // to be at the same position. |
