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author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2014-03-27 17:01:55 +0000 |
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committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2014-03-27 17:01:55 +0000 |
commit | 20d63e8ff055ba280061a2fc15a033b038890872 (patch) | |
tree | 9f3b79dd509614213b476db74c3122f4e41bec1f | |
parent | 8609fca0129cb64a77e9a6e3670b5b5d3f8209e6 (diff) | |
download | compcert-20d63e8ff055ba280061a2fc15a033b038890872.tar.gz compcert-20d63e8ff055ba280061a2fc15a033b038890872.zip |
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2437 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
-rw-r--r-- | backend/Lineartyping.v | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/backend/Lineartyping.v b/backend/Lineartyping.v index 3085f96b..f1e3d41b 100644 --- a/backend/Lineartyping.v +++ b/backend/Lineartyping.v @@ -39,6 +39,13 @@ Require Import Linear. (** * Tracking the flow of single-precision floats *) +(** At each program point, we infer a set of machine registers + that are guaranteed to contain single-precision floats. + The inference is a simple forward dataflow analysis, iterating on the + list of instructions until a fixpoint is reached. The result of + the analysis is a map from labels to sets of machine registers + containing single-precision floats. *) + Module OrderedMreg := OrderedIndexed(IndexedMreg). Module Regset := FSetAVL.Make(OrderedMreg). |