<div dir="ltr"><div dir="ltr"><pre style="font-family:"Courier New",courier,monotype,monospace;color:rgb(0,0,0);font-size:medium">Unfortunately nothing very specific: OOM on self-hosted armv8 buildbots (see below). Also see the discussion here: <a href="http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20190121/621311.html">http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20190121/621311.html</a><br></pre><pre style="font-family:"Courier New",courier,monotype,monospace;color:rgb(0,0,0);font-size:medium">I'll try to include a better commit message in subsequent rollbacks :)</pre><pre style="font-family:"Courier New",courier,monotype,monospace;color:rgb(0,0,0);font-size:medium"><span class="gmail-m_8941829306673344397m_4048268705531394949gmail-stdout">[1/3080] Building CXX object lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o
FAILED: lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o 
/home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage1.install/bin/clang++   -DGTEST_HAS_RTTI=0 -D_DEBUG -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Demangle -I/home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle -I/usr/include/libxml2 -Iinclude -I/home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/include -mcpu=cortex-a57 -marm -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -O3    -UNDEBUG  -fno-exceptions -fno-rtti -MMD -MT lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o -MF lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o.d -o lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o -c /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle/MicrosoftDemangle.cpp
LLVM ERROR: out of memory
Stack dump:
0.      Program arguments: /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage1.install/bin/clang-9 -cc1 -triple armv8-unknown-linux-gnueabihf -emit-obj -disable-free -main-file-name MicrosoftDemangle.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu cortex-a57 -target-feature +crc -target-feature +dsp -target-feature -fp16fml -target-feature -ras -target-feature -dotprod -target-feature +hwdiv-arm -target-feature +hwdiv -target-abi aapcs-linux -mfloat-abi hard -fallow-half-arguments-and-returns -dwarf-column-info -debugger-tuning=gdb -ffunction-sections -fdata-sections -coverage-notes-file /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage2/lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.gcno -resource-dir /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage1.install/lib/clang/9.0.0 -dependency-file lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o.d -MT lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o -D GTEST_HAS_RTTI=0 -D _DEBUG -D _FILE_OFFSET_BITS=64 -D _GNU_SOURCE -D _LARGEFILE_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I lib/Demangle -I /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle -I /usr/include/libxml2 -I include -I /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/arm-linux-gnueabihf/5.4.0/../../../../include/c++/5.4.0 -internal-isystem /usr/lib/gcc/arm-linux-gnueabihf/5.4.0/../../../../include/arm-linux-gnueabihf/c++/5.4.0 -internal-isystem /usr/lib/gcc/arm-linux-gnueabihf/5.4.0/../../../../include/arm-linux-gnueabihf/c++/5.4.0 -internal-isystem /usr/lib/gcc/arm-linux-gnueabihf/5.4.0/../../../../include/c++/5.4.0/backward -internal-isystem /usr/local/include -internal-isystem /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage1.install/lib/clang/9.0.0/include -internal-externc-isystem /usr/include/arm-linux-gnueabihf -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -pedantic -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage2 -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fno-rtti -fno-signed-char -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o lib/Demangle/CMakeFiles/LLVMDemangle.dir/MicrosoftDemangle.cpp.o -x c++ /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle/MicrosoftDemangle.cpp -faddrsig 
1.      /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle/MicrosoftDemangle.cpp:249:1: current parser token 'SpecialTableSymbolNode'
2.      /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle/MicrosoftDemangle.cpp:242:23: LLVM IR generation of declaration 'llvm::ms_demangle::Demangler::copyString'
3.      /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/llvm/lib/Demangle/MicrosoftDemangle.cpp:242:23: Generating code for declaration 'llvm::ms_demangle::Demangler::copyString'
clang-9: error: unable to execute command: Aborted (core dumped)
clang-9: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 9.0.0 (trunk 351966)
Target: armv8l-unknown-linux-gnueabihf
Thread model: posix
InstalledDir: /home/buildslave/buildslave/clang-cmake-armv8-selfhost-neon/stage1.install/bin
clang-9: note: diagnostic msg: PLEASE submit a bug report to <a href="https://bugs.llvm.org/" target="_blank">https://bugs.llvm.org/</a> and include the crash backtrace, preprocessed source, and associated run script.
clang-9: note: diagnostic msg: 
********************</span></pre></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 28, 2019 at 9:35 PM David Blaikie <<a href="mailto:dblaikie@gmail.com" target="_blank">dblaikie@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">how is it breaking? (quote of a compile failure or the like might be handy)</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 25, 2019 at 7:25 AM Clement Courbet via llvm-commits <<a href="mailto:llvm-commits@lists.llvm.org" target="_blank">llvm-commits@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Author: courbet<br>
Date: Fri Jan 25 07:25:52 2019<br>
New Revision: 352206<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=352206&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=352206&view=rev</a><br>
Log:<br>
Revert r351954 "Add a value_type to ArrayRef."<br>
<br>
This breaks arm self-hosted buildbots.<br>
<br>
Modified:<br>
    llvm/trunk/include/llvm/ADT/ArrayRef.h<br>
    llvm/trunk/unittests/ADT/ArrayRefTest.cpp<br>
<br>
Modified: llvm/trunk/include/llvm/ADT/ArrayRef.h<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/ArrayRef.h?rev=352206&r1=352205&r2=352206&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/ArrayRef.h?rev=352206&r1=352205&r2=352206&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/include/llvm/ADT/ArrayRef.h (original)<br>
+++ llvm/trunk/include/llvm/ADT/ArrayRef.h Fri Jan 25 07:25:52 2019<br>
@@ -44,7 +44,6 @@ namespace llvm {<br>
     using const_iterator = const T *;<br>
     using size_type = size_t;<br>
     using reverse_iterator = std::reverse_iterator<iterator>;<br>
-    using value_type = typename std::remove_cv<T>::type;<br>
<br>
   private:<br>
     /// The start of the array, in an external buffer.<br>
<br>
Modified: llvm/trunk/unittests/ADT/ArrayRefTest.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/ADT/ArrayRefTest.cpp?rev=352206&r1=352205&r2=352206&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/ADT/ArrayRefTest.cpp?rev=352206&r1=352205&r2=352206&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/unittests/ADT/ArrayRefTest.cpp (original)<br>
+++ llvm/trunk/unittests/ADT/ArrayRefTest.cpp Fri Jan 25 07:25:52 2019<br>
@@ -51,14 +51,6 @@ static_assert(<br>
     "Assigning from an initializer list");<br>
 #endif<br>
<br>
-// Check Typedefs.<br>
-static_assert(<br>
-    std::is_same<ArrayRef<int>::value_type, int>::value,<br>
-    "erroneous value_type");<br>
-static_assert(<br>
-    std::is_same<ArrayRef<const int>::value_type, int>::value,<br>
-    "erroneous value_type");<br>
-<br>
 namespace {<br>
<br>
 TEST(ArrayRefTest, AllocatorCopy) {<br>
<br>
<br>
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</blockquote></div>
</blockquote></div>