diff options
| author | Dylan McKay <me@dylanmckay.io> | 2017-09-26 00:51:03 +0000 |
|---|---|---|
| committer | Dylan McKay <me@dylanmckay.io> | 2017-09-26 00:51:03 +0000 |
| commit | fca6e8be464d2163a90ceb49cdf471f0f98780f8 (patch) | |
| tree | a8f0ba460c4b2ac9edb46feb900ee6a58459a95e /lib/Target/AVR | |
| parent | 7f93769bed0016b5702be79b8c2f2cad26976f6d (diff) | |
[AVR] When lowering shifts into loops, put newly generated MBBs in the same
spot as the original MBB
Discovered in avr-rust/rust#62
https://github.com/avr-rust/rust/issues/62
Patch by Gergo Erdi.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314180 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/AVR')
| -rw-r--r-- | lib/Target/AVR/AVRISelLowering.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/AVR/AVRISelLowering.cpp b/lib/Target/AVR/AVRISelLowering.cpp index ab49cf9de89..50255f3ae67 100644 --- a/lib/Target/AVR/AVRISelLowering.cpp +++ b/lib/Target/AVR/AVRISelLowering.cpp @@ -1469,8 +1469,10 @@ MachineBasicBlock *AVRTargetLowering::insertShift(MachineInstr &MI, } const BasicBlock *LLVM_BB = BB->getBasicBlock(); - MachineFunction::iterator I = BB->getParent()->begin(); - ++I; + + MachineFunction::iterator I; + for (I = F->begin(); I != F->end() && &(*I) != BB; ++I); + if (I != F->end()) ++I; // Create loop block. MachineBasicBlock *LoopBB = F->CreateMachineBasicBlock(LLVM_BB); |