Mercurial > hg > truffle
diff src/share/vm/adlc/output_c.cpp @ 624:337400e7a5dd
6797305: Add LoadUB and LoadUI opcode class
Summary: Add a LoadUB (unsigned byte) and LoadUI (unsigned int) opcode class so we have these load optimizations in the first place and do not need to handle them in the matcher.
Reviewed-by: never, kvn
author | twisti |
---|---|
date | Mon, 09 Mar 2009 03:17:11 -0700 |
parents | dbbe28fc66b5 |
children | 2056494941db |
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--- a/src/share/vm/adlc/output_c.cpp Fri Mar 06 21:36:50 2009 -0800 +++ b/src/share/vm/adlc/output_c.cpp Mon Mar 09 03:17:11 2009 -0700 @@ -2139,8 +2139,59 @@ // A subfield variable, '$$' prefix emit_field( rep_var ); } else { - // A replacement variable, '$' prefix - emit_rep_var( rep_var ); + if (_strings_to_emit.peek() != NULL && + strcmp(_strings_to_emit.peek(), "$Address") == 0) { + fprintf(_fp, "Address::make_raw("); + + emit_rep_var( rep_var ); + fprintf(_fp,"->base(ra_,this,idx%d), ", _operand_idx); + + _reg_status = LITERAL_ACCESSED; + emit_rep_var( rep_var ); + fprintf(_fp,"->index(ra_,this,idx%d), ", _operand_idx); + + _reg_status = LITERAL_ACCESSED; + emit_rep_var( rep_var ); + fprintf(_fp,"->scale(), "); + + _reg_status = LITERAL_ACCESSED; + emit_rep_var( rep_var ); + Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none; + if( _operand && _operand_idx==0 && stack_type != Form::none ) { + fprintf(_fp,"->disp(ra_,this,0), "); + } else { + fprintf(_fp,"->disp(ra_,this,idx%d), ", _operand_idx); + } + + _reg_status = LITERAL_ACCESSED; + emit_rep_var( rep_var ); + fprintf(_fp,"->disp_is_oop())"); + + // skip trailing $Address + _strings_to_emit.iter(); + } else { + // A replacement variable, '$' prefix + const char* next = _strings_to_emit.peek(); + const char* next2 = _strings_to_emit.peek(2); + if (next != NULL && next2 != NULL && strcmp(next2, "$Register") == 0 && + (strcmp(next, "$base") == 0 || strcmp(next, "$index") == 0)) { + // handle $rev_var$$base$$Register and $rev_var$$index$$Register by + // producing as_Register(opnd_array(#)->base(ra_,this,idx1)). + fprintf(_fp, "as_Register("); + // emit the operand reference + emit_rep_var( rep_var ); + rep_var = _strings_to_emit.iter(); + assert(strcmp(rep_var, "$base") == 0 || strcmp(rep_var, "$index") == 0, "bad pattern"); + // handle base or index + emit_field(rep_var); + rep_var = _strings_to_emit.iter(); + assert(strcmp(rep_var, "$Register") == 0, "bad pattern"); + // close up the parens + fprintf(_fp, ")"); + } else { + emit_rep_var( rep_var ); + } + } } // end replacement and/or subfield } }