[llvm-bugs] [Bug 30450] New: Regression(280979): 3 Transforms/LoopVectorize/X86/ tests fail when using gcc 4.8.2 as host compiler

Mon Sep 19 13:47:17 PDT 2016

https://llvm.org/bugs/show_bug.cgi?id=30450

            Bug ID: 30450
           Summary: Regression(280979): 3 Transforms/LoopVectorize/X86/
                    tests fail when using gcc 4.8.2 as host compiler
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Transformation Utilities
          Assignee: unassignedbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

If I use gcc 4.8.2 (from here
http://commondatastorage.googleapis.com/chromium-browser-clang/index.html?path=tools/
- gcc482precise.tgz) to build clang and then run tests, three tests fail for
me. This started at r280979:

lit.py:
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/tools/clang/test/lit.cfg:195:
note: using clang:
'/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/clang'
-- Testing: 27715 tests, 48 threads --
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM :: Transforms/LoopVectorize/X86/scatter_crash.ll (26269 of 27715)
******************** TEST 'LLVM ::
Transforms/LoopVectorize/X86/scatter_crash.ll' FAILED ********************
Script:
--
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
<
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/scatter_crash.ll
-loop-vectorize -S |
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/scatter_crash.ll
--
Exit Code: 2

Command Output (stderr):
--
opt:
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/lib/IR/Instructions.cpp:1636:
void llvm::GetElementPtrInst::init(llvm::Value*, llvm::ArrayRef<llvm::Value*>,
const llvm::Twine&): Assertion `getNumOperands() == 1 + IdxList.size() &&
"NumOperands not initialized?"' failed.
#0 0x00000000010f4ca5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x10f4ca5)
#1 0x00000000010f2c7e llvm::sys::RunSignalHandlers()
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x10f2c7e)
#2 0x00000000010f2de2 SignalHandler(int)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x10f2de2)
#3 0x00007fb9dd06e330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007fb9dbc62c37 gsignal
/build/eglibc-oGUzwX/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007fb9dbc66028 abort
/build/eglibc-oGUzwX/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007fb9dbc5bbf6 __assert_fail_base
/build/eglibc-oGUzwX/eglibc-2.19/assert/assert.c:92:0
#7 0x00007fb9dbc5bca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x0000000000cd920c
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcd920c)
#9 0x00000000011ea877 llvm::GetElementPtrInst::Create(llvm::Type*,
llvm::Value*, llvm::ArrayRef<llvm::Value*>, llvm::Twine const&,
llvm::Instruction*) [clone .constprop.1495]
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11ea877)
#10 0x00000000011fa7f6 (anonymous
namespace)::InnerLoopVectorizer::vectorizeMemoryInstruction(llvm::Instruction*)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11fa7f6)
#11 0x00000000011f2de1 (anonymous
namespace)::InnerLoopVectorizer::vectorizeBlockInLoop(llvm::BasicBlock*,
llvm::SmallVector<llvm::PHINode*, 4u>*)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11f2de1)
#12 0x00000000011f52b3 (anonymous
namespace)::InnerLoopVectorizer::vectorizeLoop()
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11f52b3)
#13 0x00000000012044e2 llvm::LoopVectorizePass::processLoop(llvm::Loop*)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x12044e2)
#14 0x00000000012059d5 llvm::LoopVectorizePass::runImpl(llvm::Function&,
llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&,
llvm::DominatorTree&, llvm::BlockFrequencyInfo&, llvm::TargetLibraryInfo*,
llvm::DemandedBits&, llvm::AAResults&, llvm::AssumptionCache&,
std::function<llvm::LoopAccessInfo const& (llvm::Loop&)>&,
llvm::OptimizationRemarkEmitter&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x12059d5)
#15 0x0000000001206064 (anonymous
namespace)::LoopVectorize::runOnFunction(llvm::Function&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x1206064)
#16 0x0000000000cfc563 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcfc563)
#17 0x0000000000cfc60c llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcfc60c)
#18 0x0000000000cfcc2f llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcfcc2f)
#19 0x0000000000623db2 main
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x623db2)
#20 0x00007fb9dbc4df45 __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:321:0
#21 0x0000000000650938 _start
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x650938)
Stack dump:
0.    Program arguments:
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
-loop-vectorize -S 
1.    Running pass 'Function Pass Manager' on module '<stdin>'.
2.    Running pass 'Loop Vectorization' on function '@_Z3fn1v'
FileCheck error: '-' is empty.
FileCheck command line: 
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/scatter_crash.ll

--

********************
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM :: Transforms/LoopVectorize/X86/gather_scatter.ll (26288 of 27715)
******************** TEST 'LLVM ::
Transforms/LoopVectorize/X86/gather_scatter.ll' FAILED ********************
Script:
--
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
<
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/gather_scatter.ll
 -O3 -mcpu=knl -S |
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/gather_scatter.ll
-check-prefix=AVX512
--
Exit Code: 2

Command Output (stderr):
--
opt:
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/lib/IR/Instructions.cpp:1636:
void llvm::GetElementPtrInst::init(llvm::Value*, llvm::ArrayRef<llvm::Value*>,
const llvm::Twine&): Assertion `getNumOperands() == 1 + IdxList.size() &&
"NumOperands not initialized?"' failed.
#0 0x00000000010f4ca5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x10f4ca5)
#1 0x00000000010f2c7e llvm::sys::RunSignalHandlers()
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x10f2c7e)
#2 0x00000000010f2de2 SignalHandler(int)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x10f2de2)
#3 0x00007fc78328d330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007fc781e81c37 gsignal
/build/eglibc-oGUzwX/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007fc781e85028 abort
/build/eglibc-oGUzwX/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007fc781e7abf6 __assert_fail_base
/build/eglibc-oGUzwX/eglibc-2.19/assert/assert.c:92:0
#7 0x00007fc781e7aca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x0000000000cd920c
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcd920c)
#9 0x00000000011ea877 llvm::GetElementPtrInst::Create(llvm::Type*,
llvm::Value*, llvm::ArrayRef<llvm::Value*>, llvm::Twine const&,
llvm::Instruction*) [clone .constprop.1495]
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11ea877)
#10 0x00000000011fa7f6 (anonymous
namespace)::InnerLoopVectorizer::vectorizeMemoryInstruction(llvm::Instruction*)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11fa7f6)
#11 0x00000000011f2de1 (anonymous
namespace)::InnerLoopVectorizer::vectorizeBlockInLoop(llvm::BasicBlock*,
llvm::SmallVector<llvm::PHINode*, 4u>*)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11f2de1)
#12 0x00000000011f52b3 (anonymous
namespace)::InnerLoopVectorizer::vectorizeLoop()
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x11f52b3)
#13 0x00000000012044e2 llvm::LoopVectorizePass::processLoop(llvm::Loop*)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x12044e2)
#14 0x00000000012059d5 llvm::LoopVectorizePass::runImpl(llvm::Function&,
llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&,
llvm::DominatorTree&, llvm::BlockFrequencyInfo&, llvm::TargetLibraryInfo*,
llvm::DemandedBits&, llvm::AAResults&, llvm::AssumptionCache&,
std::function<llvm::LoopAccessInfo const& (llvm::Loop&)>&,
llvm::OptimizationRemarkEmitter&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x12059d5)
#15 0x0000000001206064 (anonymous
namespace)::LoopVectorize::runOnFunction(llvm::Function&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x1206064)
#16 0x0000000000cfc563 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcfc563)
#17 0x0000000000cfc60c llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcfc60c)
#18 0x0000000000cfcc2f llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0xcfcc2f)
#19 0x0000000000623db2 main
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x623db2)
#20 0x00007fc781e6cf45 __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:321:0
#21 0x0000000000650938 _start
(/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt+0x650938)
Stack dump:
0.    Program arguments:
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
-O3 -mcpu=knl -S 
1.    Running pass 'Function Pass Manager' on module '<stdin>'.
2.    Running pass 'Loop Vectorization' on function '@foo2'
FileCheck error: '-' is empty.
FileCheck command line: 
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/gather_scatter.ll
-check-prefix=AVX512

--

********************
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM :: Transforms/LoopVectorize/X86/reg-usage.ll (26347 of 27715)
******************** TEST 'LLVM :: Transforms/LoopVectorize/X86/reg-usage.ll'
FAILED ********************
Script:
--
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
<
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll
-debug-only=loop-vectorize -loop-vectorize -vectorizer-maximize-bandwidth -O2
-mtriple=x86_64-unknown-linux -S 2>&1 |
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
<
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll
-debug-only=loop-vectorize -loop-vectorize -vectorizer-maximize-bandwidth -O2
-mtriple=x86_64-unknown-linux -mattr=+avx512f -S 2>&1 |
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll
--check-prefix=AVX512F
--
Exit Code: 134

Command Output (stderr):
--
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/test/Transforms/LoopVectorize/X86/Output/reg-usage.ll.script:
line 2: 14693 Aborted                 (core dumped)
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/opt
-debug-only=loop-vectorize -loop-vectorize -vectorizer-maximize-bandwidth -O2
-mtriple=x86_64-unknown-linux -mattr=+avx512f -S <
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll
2>&1
     14694 Done                    |
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm-bootstrap/./bin/FileCheck
/usr/local/google/home/thakis/src/chrome/src/third_party/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll
--check-prefix=AVX512F

--

********************
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Testing Time: 40.51s
********************
Failing Tests (3):
    LLVM :: Transforms/LoopVectorize/X86/gather_scatter.ll
    LLVM :: Transforms/LoopVectorize/X86/reg-usage.ll
    LLVM :: Transforms/LoopVectorize/X86/scatter_crash.ll

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