diff --git jdk8/hotspot/src/share/vm/opto/output.cpp jdk8/hotspot/src/share/vm/opto/output.cpp --- jdk8/hotspot/src/share/vm/opto/output.cpp +++ jdk8/hotspot/src/share/vm/opto/output.cpp @@ -344,11 +344,6 @@ uint* jmp_offset = NEW_RESOURCE_ARRAY(uint,nblocks); uint* jmp_size = NEW_RESOURCE_ARRAY(uint,nblocks); int* jmp_nidx = NEW_RESOURCE_ARRAY(int ,nblocks); - - // Collect worst case block paddings - int* block_worst_case_pad = NEW_RESOURCE_ARRAY(int, nblocks); - memset(block_worst_case_pad, 0, nblocks * sizeof(int)); - DEBUG_ONLY( uint *jmp_target = NEW_RESOURCE_ARRAY(uint,nblocks); ) DEBUG_ONLY( uint *jmp_rule = NEW_RESOURCE_ARRAY(uint,nblocks); ) @@ -465,7 +460,6 @@ last_avoid_back_to_back_adr += max_loop_pad; } blk_size += max_loop_pad; - block_worst_case_pad[i + 1] = max_loop_pad; } } @@ -505,16 +499,9 @@ if (bnum > i) { // adjust following block's offset offset -= adjust_block_start; } - - // This block can be a loop header, account for the padding - // in the previous block. - int block_padding = block_worst_case_pad[i]; - assert(i == 0 || block_padding == 0 || br_offs >= block_padding, "Should have at least a padding on top"); // In the following code a nop could be inserted before // the branch which will increase the backward distance. - bool needs_padding = ((uint)(br_offs - block_padding) == last_may_be_short_branch_adr); - assert(!needs_padding || jmp_offset[i] == 0, "padding only branches at the beginning of block"); - + bool needs_padding = ((uint)br_offs == last_may_be_short_branch_adr); if (needs_padding && offset <= 0) offset -= nop_size;