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| 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 | dada014781e8277ddc829e47aa337ab9792d8485 (patch) | |
| tree | fdad99091dc10157431f7d16555f6b5cd8779765 /llvm/lib/Target/AVR | |
| parent | 832c4a65c0b22f9e88374703db1064f8a7d7a7d4 (diff) | |
| download | bcm5719-llvm-dada014781e8277ddc829e47aa337ab9792d8485.tar.gz bcm5719-llvm-dada014781e8277ddc829e47aa337ab9792d8485.zip | |
[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.
llvm-svn: 314180
Diffstat (limited to 'llvm/lib/Target/AVR')
| -rw-r--r-- | llvm/lib/Target/AVR/AVRISelLowering.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Target/AVR/AVRISelLowering.cpp b/llvm/lib/Target/AVR/AVRISelLowering.cpp index ab49cf9de89..50255f3ae67 100644 --- a/llvm/lib/Target/AVR/AVRISelLowering.cpp +++ b/llvm/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); |
