[gcc r9-9918] libsanitizer: Cherry-pick LLVM release/13.x commit d96358a28193

[gcc r9-9918] libsanitizer: Cherry-pick LLVM release/13.x commit d96358a28193

[H.J. Lu]

https://gcc.gnu.org/g:ffe873471fb59dbe95a31afa089cfcac1a9327d4

commit r9-9918-gffe873471fb59dbe95a31afa089cfcac1a9327d4
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Dec 17 11:08:32 2021 -0800

    libsanitizer: Cherry-pick LLVM release/13.x commit d96358a28193
    
    Cherry-pick from LLVM release/13.x branch:
    
    commit d96358a2819399a2abb60ad3b26444ab7b4409cf
    Author: Michał Górny <mgorny@moritz.systems>
    Date:   Mon Dec 13 22:28:26 2021 +0100
    
        [compiler-rt] Increase kDlsymAllocPoolSize to fix test failures
    
        Increase kDlsymAllocPoolSize on the release branch as discussed on bug
        51620, as an alternative to backporting
        cb0e14ce6dcdd614a7207f4ce6fcf81a164471ab and its dependencies.
        The minimum size is 8192, as needed for the following test to pass:
    
          AddressSanitizer-i386-linux :: TestCases/Linux/long-object-path.cpp
    
        Fixes #51620
    
            PR sanitizer/102911
            * asan/asan_malloc_linux.cc (kDlsymAllocPoolSize): Set it to
            8192 on Linux.
    
    (cherry picked from commit 8c0f58cd71ec3afcce5abf10c750ec494e88232b)

Diff:
---
 libsanitizer/asan/asan_malloc_linux.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libsanitizer/asan/asan_malloc_linux.cc b/libsanitizer/asan/asan_malloc_linux.cc
index a6e692759ce..ddf898846a8 100644
--- a/libsanitizer/asan/asan_malloc_linux.cc
+++ b/libsanitizer/asan/asan_malloc_linux.cc
@@ -30,7 +30,7 @@ using namespace __asan;  // NOLINT
 
 static uptr allocated_for_dlsym;
 static uptr last_dlsym_alloc_size_in_words;
-static const uptr kDlsymAllocPoolSize = SANITIZER_RTEMS ? 4096 : 1024;
+static const uptr kDlsymAllocPoolSize = SANITIZER_RTEMS ? 4096 : 8192;
 static uptr alloc_memory_for_dlsym[kDlsymAllocPoolSize];
 
 static INLINE bool IsInDlsymAllocPool(const void *ptr) {