[LLVMbugs] [Bug 11720] New: Excessive memory consumption

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11720

             Bug #: 11720
           Summary: Excessive memory consumption
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++0x
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: kbelco at sandia.gov
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


I've been running Boost trunk regression tests with trunk clang and wanted to
point out this test on Linux consumes rather a lot of memory, and continues to
consume memory if I let it run.  I've pasted the compile line in case that
helps.  I'm unable to build clang trunk optimized on Linux, not sure why and
don't know whether that would dramatically affect the compiler memory footprint
anyways.  I haven't checked to see if the problem exists on the Mac.

Memory 42g before I killed it.

24604 kbelco    25   0 42.7g  42g  14m R 100.2 16.9   3:24.48 clang             

0 R kbelco   24604 24603 99  85   0 - 12665762 -   15:19 ?        00:03:51
/home/kbelco/llvm_linux/build/Debug+Asserts/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
fail_quantity_scalar_add.cpp -pic-level 2 -mdisable-fp-elim -masm-verbose
-mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version
2.17.50.0.6 -momit-leaf-frame-pointer -g -coverage-file
/scratch/kbelco/boost/results/boost/bin.v2/libs/units/test/fail_quantity_scalar_add.test/clang-linux-trunk/debug/fail_quantity_scalar_add.o
-resource-dir /home/kbelco/llvm_linux/build/Debug+Asserts/bin/../lib/clang/3.1
-D BOOST_ALL_NO_LIB=1 -I .. -fmodule-cache-path /var/tmp/clang-module-cache -I
/sierra/Sntools/extras/compilers/intel/Compiler/11.1/064/tbb/include
-internal-isystem /usr/include/c++/v1 -internal-isystem /usr/local/include
-internal-isystem
/home/kbelco/llvm_linux/build/Debug+Asserts/bin/../lib/clang/3.1/include
-internal-externc-isystem /usr/include -internal-externc-isystem
/home/kbelco/gcc-4.4.4/include/c++/4.4.4 -internal-externc-isystem
/home/kbelco/gcc-4.4.4/include/c++/4.4.4/x86_64-unknown-linux-gnu -O0 -Wall
-std=c++11 -fdeprecated-macro -fdebug-compilation-dir
/scratch/kbelco/boost/boost/status -ferror-limit 19 -fmessage-length 0
-mstackrealign -fgnu-runtime -fobjc-runtime-has-arc -fobjc-runtime-has-weak
-fobjc-fragile-abi -fcxx-exceptions -fexceptions -fdiagnostics-show-option -o
/scratch/kbelco/boost/results/boost/bin.v2/libs/units/test/fail_quantity_scalar_add.test/clang-linux-trunk/debug/fail_quantity_scalar_add.o
-x c++ ../libs/units/test/fail_quantity_scalar_add.cpp


Preprocessed file is attached, command used to generate PP source is:


/home/kbelco/llvm_linux/build/Debug+Asserts/bin/clang -E -c -g -D
BOOST_ALL_NO_LIB=1 -I .. -I
/sierra/Sntools/extras/compilers/intel/Compiler/11.1/064/tbb/include
-internal-isystem /usr/local/include -internal-isystem
/home/kbelco/llvm_linux/build/Debug+Asserts/bin/../lib/clang/3.1/include
-internal-externc-isystem /usr/include -internal-externc-isystem
/home/kbelco/gcc-4.4.4/include/c++/4.4.4 -internal-externc-isystem
/home/kbelco/gcc-4.4.4/include/c++/4.4.4/x86_64-unknown-linux-gnu -O0 -Wall
-std=c++11 -o fail_quantity_scalar_add.o -x c++
../libs/units/test/fail_quantity_scalar_add.cpp

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