Import LLVM 8.0.0 release including clang, lld and lldb.

1 files changed, 12 insertions, 0 deletions

diff --git a/gnu/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.cpp b/gnu/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.cpp
index e3cbab077e6..3ad7fc7e7b9 100644
--- a/gnu/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.cpp
+++ b/gnu/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.cpp
@@ -24,6 +24,18 @@ void VPlanHCFGTransforms::VPInstructionsToVPRecipes(
 
   VPRegionBlock *TopRegion = dyn_cast<VPRegionBlock>(Plan->getEntry());
   ReversePostOrderTraversal<VPBlockBase *> RPOT(TopRegion->getEntry());
+
+  // Condition bit VPValues get deleted during transformation to VPRecipes.
+  // Create new VPValues and save away as condition bits. These will be deleted
+  // after finalizing the vector IR basic blocks.
+  for (VPBlockBase *Base : RPOT) {
+    VPBasicBlock *VPBB = Base->getEntryBasicBlock();
+    if (auto *CondBit = VPBB->getCondBit()) {
+      auto *NCondBit = new VPValue(CondBit->getUnderlyingValue());
+      VPBB->setCondBit(NCondBit);
+      Plan->addCBV(NCondBit);
+    }
+  }
   for (VPBlockBase *Base : RPOT) {
     // Do not widen instructions in pre-header and exit blocks.
     if (Base->getNumPredecessors() == 0 || Base->getNumSuccessors() == 0)