r600: Clear visited structure before running.

Fixes random crashes in for-loop piglit.

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Matt Arsenault <Matthew.Arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232181 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/R600/AMDILCFGStructurizer.cpp b/lib/Target/R600/AMDILCFGStructurizer.cpp
index 18effba29ea8db6715aaff501d3ce7aea56b4f30..d72de276c52a2ca31a20ba4badea9e866c746ad9 100644 (file)
--- a/lib/Target/R600/AMDILCFGStructurizer.cpp
+++ b/lib/Target/R600/AMDILCFGStructurizer.cpp
@@ -167,6 +167,7 @@ public:
     TRI = &TII->getRegisterInfo();
     DEBUG(MF.dump(););
     OrderedBlks.clear();
+    Visited.clear();
     FuncRep = &MF;
     MLI = &getAnalysis<MachineLoopInfo>();
     DEBUG(dbgs() << "LoopInfo:\n"; PrintLoopinfo(*MLI););