diff options
Diffstat (limited to 'lib/CodeGen/ImplicitNullChecks.cpp')
-rw-r--r-- | lib/CodeGen/ImplicitNullChecks.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/CodeGen/ImplicitNullChecks.cpp b/lib/CodeGen/ImplicitNullChecks.cpp index b1176ce184cb..a02cd67ac649 100644 --- a/lib/CodeGen/ImplicitNullChecks.cpp +++ b/lib/CodeGen/ImplicitNullChecks.cpp @@ -99,7 +99,7 @@ public: bool runOnMachineFunction(MachineFunction &MF) override; }; -} // namespace +} bool ImplicitNullChecks::runOnMachineFunction(MachineFunction &MF) { TII = MF.getSubtarget().getInstrInfo(); @@ -124,6 +124,13 @@ bool ImplicitNullChecks::analyzeBlockForNullChecks( MachineBasicBlock &MBB, SmallVectorImpl<NullCheck> &NullCheckList) { typedef TargetInstrInfo::MachineBranchPredicate MachineBranchPredicate; + MDNode *BranchMD = + MBB.getBasicBlock() + ? MBB.getBasicBlock()->getTerminator()->getMetadata("make.implicit") + : nullptr; + if (!BranchMD) + return false; + MachineBranchPredicate MBP; if (TII->AnalyzeBranchPredicate(MBB, MBP, true)) |