<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion failied in llvm::SUnit* llvm::SchedBoundary::pickOnlyChoice(): Assertion `i <= (HazardRec->getMaxLookAhead() + MaxObservedStall) && "permanent hazard"'"
href="http://llvm.org/bugs/show_bug.cgi?id=20057">20057</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failied in llvm::SUnit* llvm::SchedBoundary::pickOnlyChoice(): Assertion `i <= (HazardRec->getMaxLookAhead() + MaxObservedStall) && "permanent hazard"'
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>llc
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>apazos@codeaurora.org
</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>Hi Andrew,
After the new code scheduler changes went in last week in the community trunk
we see new assertions when compiling SPEC2000 mesa and SPEC2006 povray
benchmarks with flags -O2 or -O3 and -mcpu=cortex-a53 for aarch64 target.
Assertion failed in llvm/lib/CodeGen/MachineScheduler.cpp:2056: llvm::SUnit*
llvm::SchedBoundary::pickOnlyChoice(): Assertion `i <=
(HazardRec->getMaxLookAhead() + MaxObservedStall) && "permanent hazard"'
failed.
Here are the clang command lines. Let me know if you can reproduce the issues.
Povray:
clang-3.5 -cc1 -triple aarch64--linux-gnu -emit-obj -disable-free
-main-file-name vbuffer.cpp -mrelocation-model static -mdisable-fp-elim
-menable-no-infs -menable-no-nans -menable-unsafe-fp-math -ffp-contract=fast
-ffast-math -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu
cortex-a53 -target-feature +neon -target-abi aapcs -target-cpu cortex-a53
-coverage-file
/prj/llvm-arm/scratch2/hexbuild/hexframe/30262/output/config_test_aarch64_ofast/cortex-a53/benchmark/spec2006/povray/benchspec/CPU2006/453.povray/build/build_base_arm_linux.0000/vbuffer.o
-resource-dir
/prj/llvm-arm/home/nightly/install/community-mainline/cross/2014-06-15/bin/../lib/clang/3.5.0
-D SPEC_CPU -D NDEBUG -D __arm__ -D __extern_always_inline=inline -D
SPEC_CPU_LP64 -I /prj/llvm-arm/home/rajav/lib_sources/includes -isysroot
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc
-internal-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/lib/gcc/aarch64-linux-gnu/4.9.0/../../../../aarch64-linux-gnu/include/c++/4.9.0
-internal-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/lib/gcc/aarch64-linux-gnu/4.9.0/../../../../aarch64-linux-gnu/include/c++/4.9.0/aarch64-linux-gnu
-internal-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/lib/gcc/aarch64-linux-gnu/4.9.0/../../../../aarch64-linux-gnu/include/c++/4.9.0/backward
-internal-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc/usr/local/include
-internal-isystem
/prj/llvm-arm/home/nightly/install/community-mainline/cross/2014-06-15/bin/../lib/clang/3.5.0/include
-internal-externc-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc/include
-internal-externc-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc/usr/include
-Ofast -fdeprecated-macro -fdebug-compilation-dir
/prj/llvm-arm/scratch2/hexbuild/hexframe/30262/output/config_test_aarch64_ofast/cortex-a53/benchmark/spec2006/povray/benchspec/CPU2006/453.povray/build/build_base_arm_linux.0000
-ferror-limit 19 -fmessage-length 0 -mstackrealign -fno-signed-char
-fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option
-vectorize-loops -vectorize-slp -o vbuffer.o -x c++ vbuffer.cpp
Mesa:
clang-3.5 -cc1 -triple aarch64--linux-gnu -emit-obj -disable-free
-main-file-name matrix.c -mrelocation-model static -mdisable-fp-elim
-fmath-errno -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu
cortex-a53 -target-feature +neon -target-abi aapcs -target-cpu cortex-a53 -g
-coverage-file
/prj/llvm-arm/scratch2/hexbuild/hexframe/30262/output/config_test_aarch64_o2_g/cortex-a53/benchmark/spec2000/mesa/benchspec/CFP2000/177.mesa/run/00000001/matrix.o
-resource-dir
/prj/llvm-arm/home/nightly/install/community-mainline/cross/2014-06-15/bin/../lib/clang/3.5.0
-D __arm__ -D __extern_always_inline=inline -I
/prj/llvm-arm/home/rajav/lib_sources/includes -isysroot
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc
-internal-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc/usr/local/include
-internal-isystem
/prj/llvm-arm/home/nightly/install/community-mainline/cross/2014-06-15/bin/../lib/clang/3.5.0/include
-internal-externc-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc/include
-internal-externc-isystem
/prj/llvm-arm/home/common/build_tools/gcc-fsf-glibc-aarch64-linux-gnu-4.9.0/aarch64-linux-gnu/libc/usr/include
-O2 -fdebug-compilation-dir
/prj/llvm-arm/scratch2/hexbuild/hexframe/30262/output/config_test_aarch64_o2_g/cortex-a53/benchmark/spec2000/mesa/benchspec/CFP2000/177.mesa/run/00000001
-ferror-limit 19 -fmessage-length 0 -mstackrealign -fno-signed-char
-fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -o
matrix.o -x c matrix.c</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>