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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-07-03 15:07:17 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-07-03 15:07:17 +0000 |
| commit | a0aaa3552d53b20a99566ac7116063fbb31b9964 (patch) | |
| tree | 72b86341e136accdba1c339230cee0f1ba5013d9 /cfrontend/SimplLocalsproof.v | |
| parent | 18bbf6d3cfb15219c87ebc79a5dd58bf75f2b4c4 (diff) | |
| download | compcert-kvx-a0aaa3552d53b20a99566ac7116063fbb31b9964.tar.gz compcert-kvx-a0aaa3552d53b20a99566ac7116063fbb31b9964.zip | |
Treat casts int64 -> float32 as primitive operations instead of two
casts int64 -> float64 -> float32. The latter causes double rounding
errors.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2290 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'cfrontend/SimplLocalsproof.v')
| -rw-r--r-- | cfrontend/SimplLocalsproof.v | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/cfrontend/SimplLocalsproof.v b/cfrontend/SimplLocalsproof.v index 515049ac..ad8a06a3 100644 --- a/cfrontend/SimplLocalsproof.v +++ b/cfrontend/SimplLocalsproof.v @@ -287,7 +287,8 @@ Proof. (* float *) destruct ty; simpl in H; try discriminate; destruct v; inv H. constructor. apply cast_float_float_idem. - constructor. apply cast_float_float_idem. + constructor. unfold cast_float_float, cast_long_float. + destruct f; destruct s; auto. apply Float.singleoflong_idem. apply Float.singleoflongu_idem. constructor. apply cast_float_float_idem. (* pointer *) destruct ty; simpl in H; try discriminate; destruct v; inv H; try constructor. |