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authorErik Verbruggen <erik.verbruggen@digia.com>2014-01-15 10:45:28 +0100
committerThe Qt Project <gerrit-noreply@qt-project.org>2014-01-16 19:19:44 +0100
commit73f4fdbef816ff623142bee6c235f06c4bdf58d3 (patch)
treed121b11c44f6e07b903c48e4c7ee424fd5e206bc /src/src.pro
parenta03a6499ab64da2003d2d8a4691ea89606af1f8b (diff)
V4 IR: do edge splitting after SSA transformation
This reduces the work for the dominator tree/frontier calculations, because there are less blocks to consider. All blocks inserted by splitting the critical edges, have (by definition) no effect on the dominator calculations. However, the immediate dominators for all new blocks needs to be added, because this information is used by the block scheduling. This change reduces memory/time usage during optimization passes, especially when processing excessively big switch statements. Change-Id: Ia69882e9dabdddffa1c98b1079012d8d988e1e8f Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Diffstat (limited to 'src/src.pro')
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