[PATCH] D155472: [DAG] Attempt shl narrowing in SimplifyDemandedBits

[Kazushi Marukawa via Phabricator via llvm-commits]

kaz7 added a comment.

FYI, after following patch, several files are not compilable with x86 clang because of out of memory after 1 hours infinity compilation.

  commit a8cef6b58e2d41f04ed4fa63c3f628eac1a28925
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   Mon Sep 11 10:17:28 2023 +0100

Check https://lab.llvm.org/buildbot/#/builders/91/builds/18672 for more details.

Our buildbot has following ongoing compilations.

  $ ps axww|grep clang
   14038 ?        R     30:14 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/./bin/clang++ --target=x86_64-unknown-linux-gnu -DDEBUG_PREFIX="PluginInterface" -DGTEST_HAS_RTTI=0 -DLIBOMPTARGET_JIT_VE -DLIBOMPTARGET_JIT_X86 -DTARGET_NAME="PluginInterface" -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/include -I/scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/include -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/include -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/plugins-nextgen/common/elf_common -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/plugins-nextgen/common/MemoryManager -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -Wcast-qual -Wformat-pedantic -Wimplicit-fallthrough -Wsign-compare -Wno-enum-constexpr-conversion -Wno-extra -Wno-pedantic -O2 -g -DNDEBUG -fPIC -fvisibility=protected -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeFiles/PluginInterface.dir/PluginInterface.cpp.o -MF openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeFiles/PluginInterface.dir/PluginInterface.cpp.o.d -o openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeFiles/PluginInterface.dir/PluginInterface.cpp.o -c /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
   14177 ?        R     30:12 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/./bin/clang++ --target=x86_64-unknown-linux-gnu -DGTEST_HAS_RTTI=0 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/include -I/scratch/buildbot/bothome clang-ve-ninja/build/build_llvm/include -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -Wcast-qual -Wformat-pedantic -Wimplicit-fallthrough -Wsign-compare -Wno-enum-constexpr-conversion -Wno-extra -Wno-pedantic -O2 -g -DNDEBUG -fPIC -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT openmp/libomptarget/src/CMakeFiles/omptarget.dir/device.cpp.o -MF openmp/libomptarget/src/CMakeFiles/omptarget.dir/device.cpp.o.d -o openmp/libomptarget/src/CMakeFiles/omptarget.dir/device.cpp.o -c /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/src/device.cpp
   14186 ?        R     26:02 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/./bin/clang++ --target=x86_64-unknown-linux-gnu -DGTEST_HAS_RTTI=0 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/include -I/scratch/buildbot/bothome clang-ve-ninja/build/build_llvm/include -I/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -Wcast-qual -Wformat-pedantic -Wimplicit-fallthrough -Wsign-compare -Wno-enum-constexpr-conversion -Wno-extra -Wno-pedantic -O2 -g -DNDEBUG -fPIC -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT openmp/libomptarget/src/CMakeFiles/omptarget.dir/rtl.cpp.o -MF openmp/libomptarget/src/CMakeFiles/omptarget.dir/rtl.cpp.o.d -o openmp/libomptarget/src/CMakeFiles/omptarget.dir/rtl.cpp.o -c /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/openmp/libomptarget/src/rtl.cpp


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