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comparison src/share/vm/opto/postaloc.cpp @ 605:98cb887364d3

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6810672: Comment typos Summary: I have collected some typos I have found while looking at the code. Reviewed-by: kvn, never
author twisti
date Fri, 27 Feb 2009 13:27:09 -0800
parents cc80376deb0c
children a70508bb21c3
comparison
equal deleted inserted replaced
604:ec59443af135 605:98cb887364d3
44 // Chains of copies cannot be deep. 44 // Chains of copies cannot be deep.
45 // 5008997 - This is wishful thinking. Register allocator seems to 45 // 5008997 - This is wishful thinking. Register allocator seems to
46 // be splitting live ranges for callee save registers to such 46 // be splitting live ranges for callee save registers to such
47 // an extent that in large methods the chains can be very long 47 // an extent that in large methods the chains can be very long
48 // (50+). The conservative answer is to return true if we don't 48 // (50+). The conservative answer is to return true if we don't
49 // know as this prevents optimizations from occuring. 49 // know as this prevents optimizations from occurring.
50 50
51 const int limit = 60; 51 const int limit = 60;
52 int i; 52 int i;
53 for( i=0; i < limit; i++ ) { 53 for( i=0; i < limit; i++ ) {
54 if( def->is_Proj() && def->in(0)->is_Start() && 54 if( def->is_Proj() && def->in(0)->is_Start() &&
284 // Since they are equivalent the second one if redundant and can 284 // Since they are equivalent the second one if redundant and can
285 // be removed. 285 // be removed.
286 // 286 //
287 // n will be replaced with the old value but n might have 287 // n will be replaced with the old value but n might have
288 // kills projections associated with it so remove them now so that 288 // kills projections associated with it so remove them now so that
289 // yank_if_dead will be able to elminate the copy once the uses 289 // yank_if_dead will be able to eliminate the copy once the uses
290 // have been transferred to the old[value]. 290 // have been transferred to the old[value].
291 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { 291 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
292 Node* use = n->fast_out(i); 292 Node* use = n->fast_out(i);
293 if (use->is_Proj() && use->outcnt() == 0) { 293 if (use->is_Proj() && use->outcnt() == 0) {
294 // Kill projections have no users and one input 294 // Kill projections have no users and one input