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On 12/12/11 9:59 AM, neda 8664 wrote:
<blockquote
cite="mid:CAHbEVmQ0zz0DP5_wSPaV27G2dc-hS4jasM6OS_kOadBkVQB0aQ@mail.gmail.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
hi all,<br>
<br>
I want access to all basic blocks of function in a loop, so I used
the following code:<br>
<br>
<font size="1"><i>bool parallel::runOnLoop(Loop *L, LPPassManager
&LPM)<br>
{<br>
for (Function::iterator bi= func->begin(); bi !=
func->end(); bi++){<br>
//<br>
}<br>
}</i></font><br>
</blockquote>
<br>
Are you modifying anything within this code (especially changes that
add/remove basic blocks or change their Terminator instructions)?
Depending on what you're doing, you may be invalidating the basic
block iterator bi.<br>
<br>
-- John T.<br>
<br>
<blockquote
cite="mid:CAHbEVmQ0zz0DP5_wSPaV27G2dc-hS4jasM6OS_kOadBkVQB0aQ@mail.gmail.com"
type="cite"><br>
First loop run without problem, but for second loop I get the
following error:<br>
<br>
<i><font size="1">0 <a moz-do-not-send="true"
href="http://libLLVM-2.9.so">libLLVM-2.9.so</a> 0x0137d530<br>
1 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x0137fa6c<br>
2 0x002a7400 __kernel_sigreturn + 0<br>
3 parallel.so 0x002895e9 parallel::runOnLoop(llvm::Loop*,
llvm::LPPassManager&) + 345<br>
4 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x00982994
llvm::LPPassManager::runOnFunction(llvm::Function&) + 1156<br>
5 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x00eb02c1
llvm::FPPassManager::runOnFunction(llvm::Function&) + 545<br>
6 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x00eb03d7 llvm::FPPassManager::runOnModule(llvm::Module&)
+ 87<br>
7 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x00eafde5 llvm::MPPassManager::runOnModule(llvm::Module&)
+ 517<br>
8 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x00eaff8b llvm::PassManagerImpl::run(llvm::Module&) + 171<br>
9 <a moz-do-not-send="true" href="http://libLLVM-2.9.so">libLLVM-2.9.so</a>
0x00eb008d llvm::PassManager::run(llvm::Module&) + 45<br>
10 opt 0x0805b32f main + 5295<br>
11 libc.so.6 0x002becc6 __libc_start_main + 230<br>
12 opt 0x0804ff51<br>
Stack dump:<br>
0. Program arguments: opt -dse -lda -memdep -basicaa
-libcall-aa -scev-aa -globalsmodref-aa -load
/home/llvm/src/Release+Debug+Profile+Asserts/lib/parallel.so
-parallel -dot-cfg obj.o -o out.o<br>
1. Running pass 'Function Pass Manager' on module 'obj.o'.<br>
2. Running pass 'Loop Pass Manager' on function '@main'<br>
3. Running pass 'parallel World Pass' on basic block '%bb4'<br>
Segmentation fault (core dumped)</font></i><br>
<br>
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<br>
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</blockquote>
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