[llvm-dev] LLVM 3.8.0 - Adding new instruction to a basic block (original) (raw)
Simona Simona via llvm-dev llvm-dev at lists.llvm.org
Mon Sep 5 07:26:40 PDT 2016
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On Mon, Sep 5, 2016 at 3:20 AM, Daniel Berlin <dberlin at dberlin.org> wrote:
On Sun, Sep 4, 2016 at 1:06 PM, Simona Simona via llvm-dev <_ _llvm-dev at lists.llvm.org> wrote: Hello,
I'm trying to add a new instruction after a given instruction in a basic block. Until LLVM 3.7, I was using the following code: BB->getInstList().insertAfter(I, newinst); [where both I and newinst are Instruction*] In LLVM 3.8 however, the SymbolTableList was created as a wrapper over iplist. Could anyone please tell me how I can do the same type of insertion in LLVM 3.8? auto InsertPt = I->getIterator(); BB->getInstList().insert(InsertPt, newinst); Thanks, Daniel!
In your example, isn't "insert" inserting "new_inst" before instruction "I"? As I would like to insert the "new_inst" instruction after "I", shouldn't it be BB->getInstList().insertAfter(InsertPt, new_inst); ?
With insert I currently get the following error: Instruction does not dominate all uses! %0 = getelementptr inbounds i8, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @1, i32 0, i32 0) call void @myCall(i8* %0)
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