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comparison src/share/vm/opto/reg_split.cpp @ 1730:f55c4f82ab9d

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6978249: spill between cpu and fpu registers when those moves are fast Reviewed-by: kvn
author never
date Thu, 19 Aug 2010 14:51:47 -0700
parents 6c9cc03d8726
children f95d63e2154a
comparison
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1729:13b87063b4d8 1730:f55c4f82ab9d
973 return 0; 973 return 0;
974 } 974 }
975 insidx++; // Reset iterator to skip USE side split 975 insidx++; // Reset iterator to skip USE side split
976 continue; 976 continue;
977 } 977 }
978
979 if (UseFPUForSpilling && n->is_Call() && !uup && !dup ) {
980 // The use at the call can force the def down so insert
981 // a split before the use to allow the def more freedom.
982 maxlrg = split_USE(def,b,n,inpidx,maxlrg,dup,false, splits,slidx);
983 // If it wasn't split bail
984 if (!maxlrg) {
985 return 0;
986 }
987 insidx++; // Reset iterator to skip USE side split
988 continue;
989 }
990
978 // Here is the logic chart which describes USE Splitting: 991 // Here is the logic chart which describes USE Splitting:
979 // 0 = false or DOWN, 1 = true or UP 992 // 0 = false or DOWN, 1 = true or UP
980 // 993 //
981 // Overlap | DEF | USE | Action 994 // Overlap | DEF | USE | Action
982 //------------------------------------------------------- 995 //-------------------------------------------------------