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8151708: C1 FastTLABRefill can allocate TLABs past the end of the heap

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Use branch instruction that checks xcc instead of icc.

Reviewed-by: kvn, thartmann
This commit is contained in:
Zoltan Majo 2016-04-15 07:54:31 +02:00
parent dc3f4fbc96
commit cd3197f341
1 changed files with 2 additions and 2 deletions
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4
hotspot/src/cpu/sparc/vm/macroAssembler_sparc.cpp
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@ -3257,12 +3257,12 @@ void MacroAssembler::eden_allocate(
if (var_size_in_bytes->is_valid()) { if (var_size_in_bytes->is_valid()) {
// size is unknown at compile time // size is unknown at compile time
cmp(free, var_size_in_bytes); cmp(free, var_size_in_bytes);
br(Assembler::lessUnsigned, false, Assembler::pn, slow_case); // if there is not enough space go the slow case brx(Assembler::lessUnsigned, false, Assembler::pn, slow_case); // if there is not enough space go the slow case
delayed()->add(obj, var_size_in_bytes, end); delayed()->add(obj, var_size_in_bytes, end);
} else { } else {
// size is known at compile time // size is known at compile time
cmp(free, con_size_in_bytes); cmp(free, con_size_in_bytes);
br(Assembler::lessUnsigned, false, Assembler::pn, slow_case); // if there is not enough space go the slow case brx(Assembler::lessUnsigned, false, Assembler::pn, slow_case); // if there is not enough space go the slow case
delayed()->add(obj, con_size_in_bytes, end); delayed()->add(obj, con_size_in_bytes, end);
} }
// Compare obj with the value at top_addr; if still equal, swap the value of // Compare obj with the value at top_addr; if still equal, swap the value of