[llvm-bugs] [Bug 38511] New: opt crashes with 'Assertion `ResultPass && "getAnalysis*() called on an analysis that was not " "'required' by pass!"' failed.' when doing "opt -loop-reduce -iv-users -scalarize-masked-mem-intrin"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38511

            Bug ID: 38511
           Summary: opt crashes with 'Assertion `ResultPass &&
                    "getAnalysis*() called on an analysis that was not "
                    "'required' by pass!"' failed.' when doing "opt
                    -loop-reduce -iv-users -scalarize-masked-mem-intrin"
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: mikael.holmen at ericsson.com
                CC: llvm-bugs at lists.llvm.org

Running
 opt -loop-reduce -iv-users -scalarize-masked-mem-intrin -S -o - bbi-16750.ll

yields

opt: ../include/llvm/PassAnalysisSupport.h:236: AnalysisType
&llvm::Pass::getAnalysisID(AnalysisID) const [AnalysisType =
llvm::TargetTransformInfoWrapperPass]: Assertion `ResultPass && "getAnalysis*()
called on an analysis that was not " "'required' by pass!"' failed.
Stack dump:
0.      Program arguments: /data/repo/llvm-patch/build-all/bin/opt -loop-reduce
-iv-users -scalarize-masked-mem-intrin -S -o - bbi-16750.ll 
1.      Running pass 'Function Pass Manager' on module 'bbi-16750.ll'.
2.      Running pass 'Scalarize Masked Memory Intrinsics' on function '@f'
#0 0x0000000002087e54 PrintStackTraceSignalHandler(void*)
(/data/repo/llvm-patch/build-all/bin/opt+0x2087e54)
#1 0x0000000002085fb0 llvm::sys::RunSignalHandlers()
(/data/repo/llvm-patch/build-all/bin/opt+0x2085fb0)
#2 0x00000000020881b8 SignalHandler(int)
(/data/repo/llvm-patch/build-all/bin/opt+0x20881b8)
#3 0x00007f9805cf4330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007f98048e3c37 gsignal
/build/eglibc-ripdx6/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f98048e7028 abort
/build/eglibc-ripdx6/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f98048dcbf6 __assert_fail_base
/build/eglibc-ripdx6/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f98048dcca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x00000000018b7fc6 (anonymous
namespace)::ScalarizeMaskedMemIntrin::runOnFunction(llvm::Function&)
(/data/repo/llvm-patch/build-all/bin/opt+0x18b7fc6)
#9 0x0000000001af9383 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/data/repo/llvm-patch/build-all/bin/opt+0x1af9383)
#10 0x0000000001af9598 llvm::FPPassManager::runOnModule(llvm::Module&)
(/data/repo/llvm-patch/build-all/bin/opt+0x1af9598)
#11 0x0000000001af9a4a llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/data/repo/llvm-patch/build-all/bin/opt+0x1af9a4a)
#12 0x00000000007556e4 main (/data/repo/llvm-patch/build-all/bin/opt+0x7556e4)
#13 0x00007f98048cef45 __libc_start_main
/build/eglibc-ripdx6/eglibc-2.19/csu/libc-start.c:321:0
#14 0x000000000073de2d _start
(/data/repo/llvm-patch/build-all/bin/opt+0x73de2d)
Abort

We're nomrally not running -scalarize-masked-mem-intrin.
Found this when running random passes on random input.

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