diff options
| author | Dan Gohman <gohman@apple.com> | 2008-09-05 01:07:48 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-09-05 01:07:48 +0000 |
| commit | c7f4a8a80cb7e8cf09495f4b60ae45734e7d5d98 (patch) | |
| tree | 83742c1480ef1800ca10194695e19cc962ed229a /lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp | |
| parent | d89ae99ec81f4806fe02b54c7dbe706a1f49ddab (diff) | |
In FastISel mode, the scheduler may be invoked multiple times
in the same block. Fix the entry-block handling to only run at
at the beginning of the entry block, and not any other times.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55817 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp index 21c12d3993..fff444087a 100644 --- a/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp +++ b/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp @@ -731,7 +731,9 @@ void ScheduleDAG::EmitLiveInCopies(MachineBasicBlock *MBB) { /// EmitSchedule - Emit the machine code in scheduled order. MachineBasicBlock *ScheduleDAG::EmitSchedule() { - bool isEntryBB = &MF->front() == BB; + // If we're emitting the first code into the entry block, we + // have additional work to do. + bool isEntryBB = &MF->front() == BB && BB->empty(); if (isEntryBB && !SchedLiveInCopies) { // If this is the first basic block in the function, and if it has live ins |