Mercurial > hg > graal-compiler
diff src/share/vm/opto/escape.cpp @ 164:c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
Summary: Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions.
Reviewed-by: never, rasbold
| author | kvn |
|---|---|
| date | Wed, 21 May 2008 13:46:23 -0700 |
| parents | 885ed790ecf0 |
| children | 7793bd37a336 |
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--- a/src/share/vm/opto/escape.cpp Wed May 21 10:45:07 2008 -0700 +++ b/src/share/vm/opto/escape.cpp Wed May 21 13:46:23 2008 -0700 @@ -417,11 +417,18 @@ // | | // AddP ( base == address ) // + // case #8. narrow Klass's field reference. + // LoadNKlass + // | + // DecodeN + // | | + // AddP ( base == address ) + // Node *base = addp->in(AddPNode::Base)->uncast(); if (base->is_top()) { // The AddP case #3 and #6. base = addp->in(AddPNode::Address)->uncast(); assert(base->Opcode() == Op_ConP || base->Opcode() == Op_ThreadLocal || - base->Opcode() == Op_CastX2P || + base->Opcode() == Op_CastX2P || base->Opcode() == Op_DecodeN || (base->is_Mem() && base->bottom_type() == TypeRawPtr::NOTNULL) || (base->is_Proj() && base->in(0)->is_Allocate()), "sanity"); } @@ -1573,6 +1580,7 @@ if (k->Opcode() == Op_LoadKlass) { kt = k->as_Load()->type()->isa_klassptr(); } else { + // Also works for DecodeN(LoadNKlass). kt = k->as_Type()->type()->isa_klassptr(); } assert(kt != NULL, "TypeKlassPtr required."); @@ -1811,6 +1819,7 @@ break; } case Op_LoadKlass: + case Op_LoadNKlass: { add_node(n, PointsToNode::JavaObject, PointsToNode::GlobalEscape, true); break; @@ -2025,6 +2034,7 @@ break; } case Op_LoadKlass: + case Op_LoadNKlass: { assert(false, "Op_LoadKlass"); break;