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comparison src/share/vm/opto/compile.cpp @ 10111:8373c19be854

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8011621: live_ranges_in_separate_class.patch Reviewed-by: kvn, roland Contributed-by: niclas.adlertz@oracle.com
author neliasso
date Tue, 16 Apr 2013 10:08:41 +0200
parents cc32ccaaf47f
children 6f3fd5150b67
comparison
equal deleted inserted replaced
10109:1c6887c9afaa 10111:8373c19be854
2125 2125
2126 debug_only( cfg.verify(); ) 2126 debug_only( cfg.verify(); )
2127 } 2127 }
2128 NOT_PRODUCT( verify_graph_edges(); ) 2128 NOT_PRODUCT( verify_graph_edges(); )
2129 2129
2130 PhaseChaitin regalloc(unique(),cfg,m); 2130 PhaseChaitin regalloc(unique(), cfg, m);
2131 _regalloc = &regalloc; 2131 _regalloc = &regalloc;
2132 { 2132 {
2133 TracePhase t2("regalloc", &_t_registerAllocation, true); 2133 TracePhase t2("regalloc", &_t_registerAllocation, true);
2134 // Perform any platform dependent preallocation actions. This is used,
2135 // for example, to avoid taking an implicit null pointer exception
2136 // using the frame pointer on win95.
2137 _regalloc->pd_preallocate_hook();
2138
2139 // Perform register allocation. After Chaitin, use-def chains are 2134 // Perform register allocation. After Chaitin, use-def chains are
2140 // no longer accurate (at spill code) and so must be ignored. 2135 // no longer accurate (at spill code) and so must be ignored.
2141 // Node->LRG->reg mappings are still accurate. 2136 // Node->LRG->reg mappings are still accurate.
2142 _regalloc->Register_Allocate(); 2137 _regalloc->Register_Allocate();
2143 2138
2144 // Bail out if the allocator builds too many nodes 2139 // Bail out if the allocator builds too many nodes
2145 if (failing()) return; 2140 if (failing()) {
2141 return;
2142 }
2146 } 2143 }
2147 2144
2148 // Prior to register allocation we kept empty basic blocks in case the 2145 // Prior to register allocation we kept empty basic blocks in case the
2149 // the allocator needed a place to spill. After register allocation we 2146 // the allocator needed a place to spill. After register allocation we
2150 // are not adding any new instructions. If any basic block is empty, we 2147 // are not adding any new instructions. If any basic block is empty, we
2157 } else { 2154 } else {
2158 cfg.set_loop_alignment(); 2155 cfg.set_loop_alignment();
2159 } 2156 }
2160 cfg.fixup_flow(); 2157 cfg.fixup_flow();
2161 } 2158 }
2162
2163 // Perform any platform dependent postallocation verifications.
2164 debug_only( _regalloc->pd_postallocate_verify_hook(); )
2165 2159
2166 // Apply peephole optimizations 2160 // Apply peephole optimizations
2167 if( OptoPeephole ) { 2161 if( OptoPeephole ) {
2168 NOT_PRODUCT( TracePhase t2("peephole", &_t_peephole, TimeCompiler); ) 2162 NOT_PRODUCT( TracePhase t2("peephole", &_t_peephole, TimeCompiler); )
2169 PhasePeephole peep( _regalloc, cfg); 2163 PhasePeephole peep( _regalloc, cfg);