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<base href="http://llvm.org/bugs/" />
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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 --- - Mesa llvmpipe lp_test_conv regression"
href="http://llvm.org/bugs/show_bug.cgi?id=19694">19694</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Mesa llvmpipe lp_test_conv regression
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>regression
</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>vlee@freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>brian.e.paul@gmail.com, filcab@gmail.com, jfonseca@vmware.com, llvmbugs@cs.uiuc.edu, sroland@vmware.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ ./build/darwin-x86_64-debug/bin/lp_test_conv
Cannot emit physreg copy instruction
UNREACHABLE executed at X86InstrInfo.cpp:3184!
(gdb) bt
#0 0x00007fff94952866 in __pthread_kill ()
#1 0x00007fff91ed335c in pthread_kill ()
#2 0x0000000100a30026 in abort ()
#3 0x0000000100a1efc1 in llvm::llvm_unreachable_internal ()
#4 0x0000000100178185 in llvm::X86InstrInfo::copyPhysReg ()
#5 0x0000000100414ffd in (anonymous
namespace)::ExpandPostRA::runOnMachineFunction ()
#6 0x000000010048f02c in llvm::MachineFunctionPass::runOnFunction ()
#7 0x00000001009bf8b9 in llvm::FPPassManager::runOnFunction ()
#8 0x00000001009bf0ae in llvm::legacy::FunctionPassManagerImpl::run ()
#9 0x00000001009bef86 in llvm::legacy::FunctionPassManager::run ()
#10 0x00000001003c1d13 in llvm::JIT::runJITOnFunctionUnlocked ()
#11 0x00000001003c1fbb in llvm::JIT::getPointerToFunction ()
#12 0x0000000100082bec in gallivm_jit_function (gallivm=0x101103e40,
func=0x10110dee0) at src/gallium/auxiliary/gallivm/lp_b$
#13 0x0000000100000f36 in test_one (verbose=0, fp=0x0, src_type={floating = 1,
fixed = 0, sign = 0, norm = 1, width = 32, le$
#14 0x0000000100001913 in test_some (verbose=0, fp=0x0, n=1000) at
src/gallium/drivers/llvmpipe/lp_test_conv.c:431
#15 0x000000010000333b in main (argc=1, argv=0x7fff5fbff5a0) at
src/gallium/drivers/llvmpipe/lp_test_main.c:411
b19c087aa7efac4bd11f0d49a5c37b09e1c4708e is the first bad commit
commit b19c087aa7efac4bd11f0d49a5c37b09e1c4708e
Author: Filipe Cabecinhas <<a href="mailto:me@filcab.net">me@filcab.net</a>>
Date: Thu May 8 00:25:16 2014 +0000
Lower certain build_vectors to insertps instructions
Summary:
Vectors built with zeros and elements in the same order as another
(source) vector are optimized to be built using a single insertps
instruction.
Also optimize when we move one element in a vector to a different place
in that vector while zeroing out some of the other elements.
Further optimizations are possible, described in TODO comments.
I will be implementing at least some of them in the near future.
Added some tests for different cases where this optimization triggers.
Reviewers: nadav, delena, craig.topper
Subscribers: llvm-commits
Differential Revision: <a href="http://reviews.llvm.org/D3521">http://reviews.llvm.org/D3521</a>
git-svn-id: <a href="https://llvm.org/svn/llvm-project/llvm/trunk@208271">https://llvm.org/svn/llvm-project/llvm/trunk@208271</a>
91177308-0d34-0410-b5e6-96231b3b80d8
:040000 040000 f42f38be24c2a0f18d154d492616f179b5475a7e
63ffd59e12d5a1a5e84c2b8fe13076db411ec9b8 M lib
:040000 040000 9be8fdf3579d75173f502e7567468a71eb117c6d
c697a61eb5601e30b873c00bff88ad71c825ca4a M test
bisect run success</pre>
</div>
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