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diff --git a/content/zettel/2b1c.md b/content/zettel/2b1c.md new file mode 100644 index 0000000..42f73c5 --- /dev/null +++ b/content/zettel/2b1c.md @@ -0,0 +1,17 @@ ++++ +title = "Predicated instructions" +author = "Yann Herklotz" +tags = [] +categories = [] +backlinks = ["2b1b"] +forwardlinks = ["2b1d", "2b1c1"] +zettelid = "2b1c" ++++ + +The standard solution to predicated execution is to provide optional +predicates to the instructions themselves. This is normally undesirable +in VLIW processors with deep pipelines, as the predicate needs to be +known in advance to be able to execute the instruction properly. +However, without this pipeline, it is beneficial to convert use this +over the phi-predicated instructions, as it require less analysis at the +compilation phase and does not require a static single assignment form. |