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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - segfault in opt"
href="https://bugs.llvm.org/show_bug.cgi?id=33818">33818</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>segfault in opt
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: ARM
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bagel99@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>When compiling for arm cortex-m3, a seqfault in opt happens. It appears that
someone is passing Ty=0 to ARMTargetLowering::isLegalAddressingMode. Backtrace
follows:
#0 llvm::ARMTargetLowering::isLegalAddressingMode (this=0x348de10, DL=...,
AM=..., Ty=0x0, AS=0)
at /home/bgl/work/llvm/lib/Target/ARM/ARMISelLowering.cpp:12384
#1 0x00000000009c2778 in
llvm::BasicTTIImplBase<llvm::ARMTTIImpl>::isLegalAddressingMode
(AddrSpace=<optimized out>, Scale=0, HasBaseReg=<optimized out>,
BaseOffset=0, BaseGV=0x3320ca8, Ty=<optimized out>, this=0x3428c58)
at /home/bgl/work/llvm/include/llvm/CodeGen/BasicTTIImpl.h:119
#2 llvm::TargetTransformInfoImplCRTPBase<llvm::ARMTTIImpl>::getGEPCost (
Operands=..., Ptr=<optimized out>, PointeeType=<optimized out>,
this=0x3428c58)
at /home/bgl/work/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h:681
#3 llvm::BasicTTIImplBase<llvm::ARMTTIImpl>::getGEPCost (Operands=...,
Ptr=<optimized out>, PointeeType=<optimized out>, this=0x3428c58)
at /home/bgl/work/llvm/include/llvm/CodeGen/BasicTTIImpl.h:155
#4 llvm::TargetTransformInfoImplCRTPBase<llvm::ARMTTIImpl>::getUserCost (
Operands=..., U=<optimized out>, this=0x3428c58)
at /home/bgl/work/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h:709
#5 llvm::TargetTransformInfo::Model<llvm::ARMTTIImpl>::getUserCost (
this=0x3428c50, U=<optimized out>, Operands=...)
at /home/bgl/work/llvm/include/llvm/Analysis/TargetTransformInfo.h:1047
#6 0x000000000126b808 in llvm::TargetTransformInfo::getUserCost (
this=this@entry=0x33527e0, U=U@entry=0x3323158, Operands=...)
at /home/bgl/work/llvm/lib/Analysis/TargetTransformInfo.cpp:100
#7 0x00000000012d615d in llvm::TargetTransformInfo::getUserCost (
this=this@entry=0x33527e0, U=U@entry=0x3323158)
at /home/bgl/work/llvm/include/llvm/Analysis/TargetTransformInfo.h:234
#8 0x0000000001bad561 in ComputeSpeculationCost (TTI=..., I=0x3323158)
at /home/bgl/work/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:301
#9 SpeculativelyExecuteBB (BI=BI@entry=0x33230f8, ThenBB=0x3322f50, TTI=...)
at /home/bgl/work/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:1942
#10 0x0000000001bb53d2 in (anonymous
namespace)::SimplifyCFGOpt::SimplifyCondBranch (Builder=..., BI=0x33230f8,
this=0x7fffffffd1a0)
at /home/bgl/work/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:5804
#11 (anonymous namespace)::SimplifyCFGOpt::run (BB=0x3321020,
this=0x7fffffffd1a0)
at /home/bgl/work/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:5955
#12 llvm::SimplifyCFG (BB=0x3321020, TTI=...,
BonusInstThreshold=BonusInstThreshold@entry=1, AC=AC@entry=0x331d030,
LoopHeaders=LoopHeaders@entry=0x7fffffffd420,
LateSimplifyCFG=LateSimplifyCFG@entry=false)
at /home/bgl/work/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:5995
#13 0x0000000001a27d20 in iterativelySimplifyCFG (F=..., TTI=...,
AC=AC@entry=0x331d030, BonusInstThreshold=BonusInstThreshold@entry=1,
LateSimplifyCFG=LateSimplifyCFG@entry=false)
at /home/bgl/work/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp:149
#14 0x0000000001a27f20 in simplifyFunctionCFG (F=..., TTI=..., AC=0x331d030,
BonusInstThreshold=1, LateSimplifyCFG=<optimized out>)
at /home/bgl/work/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp:164
---Type <return> to continue, or q <return> to quit---
#15 0x000000000160db32 in llvm::FPPassManager::runOnFunction (this=0x346bff0,
F=...) at /home/bgl/work/llvm/lib/IR/LegacyPassManager.cpp:1514
#16 0x000000000160dc5e in llvm::legacy::FunctionPassManagerImpl::run (
this=0x346bb30, F=...)
at /home/bgl/work/llvm/lib/IR/LegacyPassManager.cpp:1463
#17 0x000000000160e166 in llvm::legacy::FunctionPassManager::run (
this=this@entry=0x326fee0, F=...)
at /home/bgl/work/llvm/lib/IR/LegacyPassManager.cpp:1387
#18 0x000000000069ad04 in main (argc=<optimized out>, argv=0x7fffffffdf68)
at /home/bgl/work/llvm/tools/opt/opt.cpp:704
(gdb) up
#1 0x00000000009c2778 in
llvm::BasicTTIImplBase<llvm::ARMTTIImpl>::isLegalAddressingMode
(AddrSpace=<optimized out>, Scale=0, HasBaseReg=<optimized out>,
BaseOffset=0, BaseGV=0x3320ca8, Ty=<optimized out>, this=0x3428c58)
at /home/bgl/work/llvm/include/llvm/CodeGen/BasicTTIImpl.h:119</pre>
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