[src/trunk]: src/external/gpl3/gcc/dist/libsanitizer Reduce sizes for non _LP...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d50cffb3ffc4
branches:  trunk
changeset: 323722:d50cffb3ffc4
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Jun 27 15:57:20 2018 +0000

description:
Reduce sizes for non _LP64 and compiler checks so that the code compiles
(but it will not work, since there is not enough address space to implement
the shadow space required).

diffstat:

 external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc                 |  10 ++++++++++
 external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_allocator.h |   2 ++
 2 files changed, 12 insertions(+), 0 deletions(-)

diffs (46 lines):

diff -r 850efbb532af -r d50cffb3ffc4 external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc
--- a/external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc        Wed Jun 27 15:56:30 2018 +0000
+++ b/external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc        Wed Jun 27 15:57:20 2018 +0000
@@ -26,7 +26,11 @@
 struct ChunkMetadata {
   u8 allocated : 8;  // Must be first.
   ChunkTag tag : 2;
+#ifdef _LP64
   uptr requested_size : 54;
+#else
+  uptr requested_size : 30;
+#endif
   u32 stack_trace_id;
 };
 
@@ -40,9 +44,15 @@
     sizeof(ChunkMetadata), SizeClassMap, kRegionSizeLog, ByteMap>
     PrimaryAllocator;
 #else
+#if _LP64
 static const uptr kMaxAllowedMallocSize = 8UL << 30;
 static const uptr kAllocatorSpace = 0x600000000000ULL;
 static const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
+#else
+static const uptr kMaxAllowedMallocSize = 8UL << 20;
+static const uptr kAllocatorSpace = 0x60000000UL;
+static const uptr kAllocatorSize = 0x40000000ULL; // 2G.
+#endif
 typedef SizeClassAllocator64<kAllocatorSpace, kAllocatorSize,
         sizeof(ChunkMetadata), DefaultSizeClassMap> PrimaryAllocator;
 #endif
diff -r 850efbb532af -r d50cffb3ffc4 external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_allocator.h
--- a/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_allocator.h        Wed Jun 27 15:56:30 2018 +0000
+++ b/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_allocator.h        Wed Jun 27 15:57:20 2018 +0000
@@ -475,9 +475,11 @@
  private:
   static const uptr kRegionSize = kSpaceSize / kNumClassesRounded;
   static const uptr kSpaceEnd = kSpaceBeg + kSpaceSize;
+#if _LP64
   COMPILER_CHECK(kSpaceBeg % kSpaceSize == 0);
   // kRegionSize must be >= 2^32.
   COMPILER_CHECK((kRegionSize) >= (1ULL << (SANITIZER_WORDSIZE / 2)));
+#endif
   // Populate the free list with at most this number of bytes at once
   // or with one element if its size is greater.
   static const uptr kPopulateSize = 1 << 14;