Mercurial > hg > graal-jvmci-8
comparison src/share/vm/opto/machnode.cpp @ 4053:e3b0dcc327b9
7104561: UseRDPCForConstantTableBase doesn't work after shorten branches changes
Reviewed-by: never, kvn
author | twisti |
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date | Mon, 31 Oct 2011 03:06:42 -0700 |
parents | 11211f7cb5a0 |
children | 6729bbc1fcd6 |
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4052:eba044a722a4 | 4053:e3b0dcc327b9 |
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482 int MachConstantNode::constant_offset() { | 482 int MachConstantNode::constant_offset() { |
483 int offset = _constant.offset(); | 483 int offset = _constant.offset(); |
484 // Bind the offset lazily. | 484 // Bind the offset lazily. |
485 if (offset == -1) { | 485 if (offset == -1) { |
486 Compile::ConstantTable& constant_table = Compile::current()->constant_table(); | 486 Compile::ConstantTable& constant_table = Compile::current()->constant_table(); |
487 // If called from Compile::scratch_emit_size assume the worst-case | |
488 // for load offsets: half the constant table size. | |
489 // NOTE: Don't return or calculate the actual offset (which might | |
490 // be zero) because that leads to problems with e.g. jumpXtnd on | |
491 // some architectures (cf. add-optimization in SPARC jumpXtnd). | |
492 if (Compile::current()->in_scratch_emit_size()) | |
493 return constant_table.size() / 2; | |
487 offset = constant_table.table_base_offset() + constant_table.find_offset(_constant); | 494 offset = constant_table.table_base_offset() + constant_table.find_offset(_constant); |
488 _constant.set_offset(offset); | 495 _constant.set_offset(offset); |
489 } | 496 } |
490 return offset; | 497 return offset; |
491 } | 498 } |