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Diffstat (limited to 'content/zettel/2b1d.md')
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diff --git a/content/zettel/2b1d.md b/content/zettel/2b1d.md new file mode 100644 index 0000000..6f63820 --- /dev/null +++ b/content/zettel/2b1d.md @@ -0,0 +1,17 @@ ++++ +title = "Heuristic for if-conversion" +author = "Yann Herklotz" +tags = [] +categories = [] +backlinks = ["2b1c"] +forwardlinks = ["2b1e", "2b1d1"] +zettelid = "2b1d" ++++ + +Various heuristics can be used in if-conversion when generating +predicated instructions. These are needed because technically any path +without backward edges could be transformed into predicated execution +passes. However, there are various disadvantages with this, because it +increases the complexity of the predicates as these will depend on other +predicates, and makes optimisations of these large block more +problematic. |