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authorSebastian Pop <sebpop@gmail.com>2019-08-20 20:54:05 +0000
committerSebastian Pop <sebpop@gmail.com>2019-08-20 20:54:05 +0000
commit63487bfec927e378e67748fee2730eacebfa1a77 (patch)
treea49c8a076cb7d8b8e86eedb8c5ba8ba5c9cff940 /lldb/packages/Python/lldbsuite/test/expression_command/context-object-objc
parent5adace352d5ef63fe344dc95a375bd33040ea987 (diff)
downloadbcm5719-llvm-63487bfec927e378e67748fee2730eacebfa1a77.tar.gz
bcm5719-llvm-63487bfec927e378e67748fee2730eacebfa1a77.zip
[AArch64] Speed-up leak and address sanitizers on AArch64 for 48-bit VMA
This patch fixes https://github.com/google/sanitizers/issues/703 On a Graviton-A1 aarch64 machine with 48-bit VMA, the time spent in LSan and ASan reduced from 2.5s to 0.01s when running clang -fsanitize=leak compiler-rt/test/lsan/TestCases/sanity_check_pure_c.c && time ./a.out clang -fsanitize=address compiler-rt/test/lsan/TestCases/sanity_check_pure_c.c && time ./a.out With this patch, LSan and ASan create both the 32 and 64 allocators and select at run time between the two allocators following a global variable that is initialized at init time to whether the allocator64 can be used in the virtual address space. Differential Revision: https://reviews.llvm.org/D60243 llvm-svn: 369441
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