Author: zhuqing
Date: 2011-11-24 04:37:49 -0500 (Thu, 24 Nov 2011)
New Revision: 3824
Modified:
trunk/osprey/be/cg/x8664/cgtarget.cxx
Log:
Fix bug860.
Code Review: Sun Chan
Modified: trunk/osprey/be/cg/x8664/cgtarget.cxx
===================================================================
--- trunk/osprey/be/cg/x8664/cgtarget.cxx 2011-11-23 08:42:18 UTC (rev
3823)
+++ trunk/osprey/be/cg/x8664/cgtarget.cxx 2011-11-24 09:37:49 UTC (rev
3824)
@@ -4121,6 +4121,15 @@
TN* CGTARG_Gen_Dedicated_Subclass_TN( OP* op, int idx, BOOL is_result )
{
+ // If idx is out of fixed number of operands or results, there is no
+ // register set info in the targ_info for the op. In this case, return
+ // tn if it is dedicated.
+ int opnd_result_cnt = is_result ? OP_fixed_results(op) : OP_fixed_opnds(op);
+ if (idx >= opnd_result_cnt) {
+ TN* tn = is_result ? OP_result( op, idx ) : OP_opnd( op, idx );
+ return TN_is_dedicated(tn) ? tn : NULL;
+ }
+
const ISA_REGISTER_SUBCLASS subclass = is_result ?
OP_result_reg_subclass( op, idx ) : OP_opnd_reg_subclass( op, idx );
const REGISTER_SET subclass_regs = REGISTER_SUBCLASS_members(subclass);
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