Mercurial > hg > graal-compiler

comparison src/share/vm/oops/generateOopMap.cpp @ 3865:9f12ede5571a

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Merge
author jcoomes
date Fri, 19 Aug 2011 14:08:18 -0700
parents 6a991dcb52bb 52e4ba46751f
children 8150fa46d2ed
comparison
equal deleted inserted replaced
3858:de147f62e695 3865:9f12ede5571a
961 961
962 // Now that we have a bound on the depth of the monitor stack, we can 962 // Now that we have a bound on the depth of the monitor stack, we can
963 // initialize the CellTypeState-related information. 963 // initialize the CellTypeState-related information.
964 init_state(); 964 init_state();
965 965
966 // We allocate space for all state-vectors for all basicblocks in one huge chuck. 966 // We allocate space for all state-vectors for all basicblocks in one huge
967 // Then in the next part of the code, we set a pointer in each _basic_block that 967 // chunk. Then in the next part of the code, we set a pointer in each
968 // points to each piece. 968 // _basic_block that points to each piece.
969 CellTypeState *basicBlockState = NEW_RESOURCE_ARRAY(CellTypeState, bbNo * _state_len); 969
970 // The product of bbNo and _state_len can get large if there are lots of
971 // basic blocks and stack/locals/monitors. Need to check to make sure
972 // we don't overflow the capacity of a pointer.
973 if ((unsigned)bbNo > UINTPTR_MAX / sizeof(CellTypeState) / _state_len) {
974 report_error("The amount of memory required to analyze this method "
975 "exceeds addressable range");
976 return;
977 }
978
979 CellTypeState *basicBlockState =
980 NEW_RESOURCE_ARRAY(CellTypeState, bbNo * _state_len);
970 memset(basicBlockState, 0, bbNo * _state_len * sizeof(CellTypeState)); 981 memset(basicBlockState, 0, bbNo * _state_len * sizeof(CellTypeState));
971 982
972 // Make a pass over the basicblocks and assign their state vectors. 983 // Make a pass over the basicblocks and assign their state vectors.
973 for (int blockNum=0; blockNum < bbNo; blockNum++) { 984 for (int blockNum=0; blockNum < bbNo; blockNum++) {
974 BasicBlock *bb = _basic_blocks + blockNum; 985 BasicBlock *bb = _basic_blocks + blockNum;