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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - [powerpc-ubuntu] code generation failure for OpenCL with some builtins with double3" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24225&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=_0fo-4jwf71_U-_YuHiKy3WKh0KYx4vTdoMrOtucHzU&s=y-Zn2xjyDVsZFi2zDeKeS7UPQWlENKygNAV4TzEVQJg&e=">24225</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[powerpc-ubuntu] code generation failure for OpenCL with some builtins with double3
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>3.6
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kanagak86@yahoo.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14633" name="attach_14633" title="bugpoint simplified version of the coge gen bug">attachment 14633</a> <a href="attachment.cgi?id=14633&action=edit" title="bugpoint simplified version of the coge gen bug">[details]</a></span>
bugpoint simplified version of the coge gen bug
Code generator bug from PPC64
The attached file causes a crash on PPC64 (Power 8) - Ubuntu 3.16.0-23-generic.
The workload is from OpenCL built-ins. The bug was reproducible for built-ins
such as fmax, fmin, fract with data type of double & vec size of 3 (=double3).
The bug is found in high optimization (-O3).
The last revision that it worked on was 3.6 r222776.
The problem seem to be there for all 3.6.1 and 3.6.2. Last tested on 3.6.2
r242926.
I have attached simplified version of the code generator bug created from bug
point.
Thanks!
Here's the snap shot of the Error Info:
llc: SelectionDAG.cpp:5911: void
llvm::SelectionDAG::ReplaceAllUsesWith(llvm::SDNode *, llvm::SDNode *):
Assertion `(!From->hasAnyUseOfValue(i) || From->getValueType(i) ==
To->getValueType(i)) && "Cannot use this version of ReplaceAllUsesWith!"'
failed.
#0 0x10a442a8 llvm::sys::PrintStackTrace(_IO_FILE*)
(/home/kajank/compiler/llvm_362_r242926/Release+Asserts/bin/llc+0x10a442a8)
#1 0x10a45090 PrintStackTraceSignalHandler(void*)
(/home/kajank/compiler/llvm_362_r242926/Release+Asserts/bin/llc+0x10a45090)
#2 0x10a45a3c SignalHandler(int)
(/home/kajank/compiler/llvm_362_r242926/Release+Asserts/bin/llc+0x10a45a3c)
0 llc 0x0000000010a442a8 llvm::sys::PrintStackTrace(_IO_FILE*) + 120
1 llc 0x0000000010a45090
2 llc 0x0000000010a45a3c
3 0x00003fff910f0478 __kernel_sigtramp_rt64 + 0
4 libc.so.6 0x00003fff90c106b8 gsignal + 72
5 libc.so.6 0x00003fff90c1295c abort + 636
6 libc.so.6 0x00003fff90c06274
7 libc.so.6 0x00003fff90c06364 __assert_fail + 100
8 llc 0x0000000010278fac
llvm::SelectionDAG::ReplaceAllUsesWith(llvm::SDNode*, llvm::SDNode*) + 952
9 llc 0x00000000102f972c
llvm::SelectionDAGISel::DoInstructionSelection() + 948
10 llc 0x00000000102f8298 llvm::SelectionDAGISel::CodeGenAndEmitDAG() +
5316
11 llc 0x00000000102f6d58
llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::Instruction
const>, llvm::ilist_iterator<llvm::Instruction const>, bool&) + 252
12 llc 0x00000000102f5e80
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 7976
13 llc 0x00000000102f2ba4
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 1712
14 llc 0x0000000010152c40
15 llc 0x00000000104a08e0
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 216
16 llc 0x0000000010947440
llvm::FPPassManager::runOnFunction(llvm::Function&) + 424
17 llc 0x00000000109477a8 llvm::FPPassManager::runOnModule(llvm::Module&)
+ 72
18 llc 0x0000000010947e58
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 1088
19 llc 0x00000000109484cc llvm::legacy::PassManager::run(llvm::Module&) +
28
20 llc 0x00000000100f8b60 main + 7524
21 libc.so.6 0x00003fff90bf4e80
22 libc.so.6 0x00003fff90bf5074 __libc_start_main + 196
Stack dump:
0. Program arguments: llc bugpoint-reduced-simplified.bc
1. Running pass 'Function Pass Manager' on module
'bugpoint-reduced-simplified.bc'.
2. Running pass 'PowerPC DAG->DAG Pattern Instruction Selection' on
function '@__fmax_double3_3D_exec'
Aborted</pre>
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