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8263964: Redundant check in ObjectStartArray::object_starts_in_range

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Reviewed-by: sjohanss, tschatzl
This commit is contained in:
Albert Mingkun Yang 2021-03-23 13:40:48 +00:00
parent bd7a184b98
commit e9321cdc41
2 changed files with 2 additions and 8 deletions
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3
src/hotspot/share/gc/parallel/objectStartArray.cpp
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@ -129,9 +129,6 @@ bool ObjectStartArray::object_starts_in_range(HeapWord* start_addr,
assert(start_addr <= end_addr, assert(start_addr <= end_addr,
"Range is wrong. start_addr (" PTR_FORMAT ") is after end_addr (" PTR_FORMAT ")", "Range is wrong. start_addr (" PTR_FORMAT ") is after end_addr (" PTR_FORMAT ")",
p2i(start_addr), p2i(end_addr)); p2i(start_addr), p2i(end_addr));
if (start_addr > end_addr) {
return false;
}
jbyte* start_block = block_for_addr(start_addr); jbyte* start_block = block_for_addr(start_addr);
jbyte* end_block = block_for_addr(end_addr); jbyte* end_block = block_for_addr(end_addr);

5
src/hotspot/share/gc/parallel/objectStartArray.hpp
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@ -144,10 +144,7 @@ class ObjectStartArray : public CHeapObj<mtGC> {
bool is_block_allocated(HeapWord* addr) { bool is_block_allocated(HeapWord* addr) {
assert_covered_region_contains(addr); assert_covered_region_contains(addr);
jbyte* block = block_for_addr(addr); jbyte* block = block_for_addr(addr);
if (*block == clean_block) return *block != clean_block;
return false;
return true;
} }
// Return true if an object starts in the range of heap addresses. // Return true if an object starts in the range of heap addresses.