[llvm-dev] Instruction does not dominate all uses!

Tim Northover via llvm-dev llvm-dev at lists.llvm.org
Fri Jun 9 21:14:42 PDT 2017

On 9 June 2017 at 21:00, Dipanjan Das via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Instruction does not dominate all uses!
>   %var = alloca [3 x i32], align 4
>   %0 = bitcast [3 x i32]* %var to i8*

It looks like your IRBuilder may be inserting the instruction in the
wrong place. I'd use the debugger to call Module::dump after that
fault to see where the bitcast really lives. If it's before the alloca
(or even not guaranteed to be afterwards) then that's your problem.


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