<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Ryan Taylor</b> <span dir="ltr"><<a href="mailto:ryta1203@gmail.com">ryta1203@gmail.com</a>></span><br>Date: Thu, Jan 12, 2012 at 12:22 PM<br>
Subject: Re: [LLVMdev] Extract Loop Failing<br>To: Cameron Zwarich <<a href="mailto:zwarich@apple.com">zwarich@apple.com</a>><br><br><br>I'm not sure it's a bug. If I don't know if I am properly using it then how would I know it's a bug and not simply a user issue? If it sounds like a bug to you then I will file it. :)<div class="HOEnZb">
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On Thu, Jan 12, 2012 at 12:18 PM, Cameron Zwarich <span dir="ltr"><<a href="mailto:zwarich@apple.com" target="_blank">zwarich@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF"><div>Filing a bug with a test case would be a good start.<br><br>Cameron</div><div><div><div><br>On Jan 12, 2012, at 12:14 PM, Ryan Taylor <<a href="mailto:ryta1203@gmail.com" target="_blank">ryta1203@gmail.com</a>> wrote:<br>
<br></div><div></div><blockquote type="cite"><div>It looks like this problem only exists on nested loops, ideas?<br><br><br><div class="gmail_quote">On Thu, Jan 12, 2012 at 11:44 AM, Ryan Taylor <span dir="ltr"><<a href="mailto:ryta1203@gmail.com" target="_blank">ryta1203@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Is it not a good idea to try and extract loops that have multiple exits?<div><div><br><br><div class="gmail_quote">
On Thu, Jan 12, 2012 at 10:44 AM, Ryan Taylor <span dir="ltr"><<a href="mailto:ryta1203@gmail.com" target="_blank">ryta1203@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I am trying to use ExtractLoop() but I am getting segFaults:<br><br>0 opt 0x00000000008edc2f<br>1 opt 0x00000000008edfda<br>
2 libpthread.so.0 0x00007ffe21203c60<br>3 opt 0x0000000000895ed9 llvm::Value::getName() const + 9<br>
4 LLVMEXITCDFG.so 0x00007ffe202b80d7<br>5 opt 0x00000000006fc6e7 llvm::LPPassManager::runOnFunction(llvm::Function&) + 1143<br>6 opt 0x0000000000882557 llvm::FPPassManager::runOnFunction(llvm::Function&) + 551<br>
7 opt 0x00000000008825db llvm::FPPassManager::runOnModule(llvm::Module&) + 75<br>8 opt 0x0000000000882197 llvm::MPPassManager::runOnModule(llvm::Module&) + 503<br>9 opt 0x0000000000882299 llvm::PassManagerImpl::run(llvm::Module&) + 137<br>
10 opt 0x00000000004ac451 main + 4881<br>11 libc.so.6 0x00007ffe204d9eff __libc_start_main + 255<br>12 opt 0x000000000049f5f9<br>Stack dump:<br>0. Program arguments: opt -load /home/ryan/llvm/llvm_core/llvm-2.9/Release/lib/LLVMEXITCDFG.so -exitPass fix_fft.c.bc -o fix_fft.c.bc <br>
1. Running pass 'Function Pass Manager' on module 'fix_fft.c.bc'.<br>2. Running pass 'Loop Pass Manager' on function '@fix_fft'<br>3. Running pass 'CDFG exitPass' on basic block '%bb3'<br>
./optScript.sh: line 46: 2637 Segmentation fault opt -load /home/ryan/llvm/llvm_core/llvm-2.9/Release/lib/LLVMEXITCDFG.so -exitPass $1.bc -o ${1}.bc<br><br>If I remove the "deleteLoopFromQueue" function call, it goes over all the loops (supposedly extracting them) and then segFaults.<br>
<br>How should I properly use this function?<br>
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