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authorBartosz Nitka <niteria@gmail.com>2016-05-24 02:56:59 -0700
committerBartosz Nitka <niteria@gmail.com>2016-05-24 04:33:21 -0700
commit4c6e69d58a300d6ef440d326a3fd29b58b284fa1 (patch)
tree6653f56c150c3aa988a96c50359d53f27f2edb01 /compiler/codeGen
parent8f7d01632cd79957fe42ea37103ca9b91a1c54f5 (diff)
downloadhaskell-4c6e69d58a300d6ef440d326a3fd29b58b284fa1.tar.gz
Document some benign nondeterminism
I've changed the functions to their nonDet equivalents and explained why they're OK there. This allowed me to remove foldNameSet, foldVarEnv, foldVarEnv_Directly, foldVarSet and foldUFM_Directly. Test Plan: ./validate, there should be no change in behavior Reviewers: simonpj, simonmar, austin, goldfire, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2244 GHC Trac Issues: #4012
Diffstat (limited to 'compiler/codeGen')
-rw-r--r--compiler/codeGen/StgCmmEnv.hs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/codeGen/StgCmmEnv.hs b/compiler/codeGen/StgCmmEnv.hs
index 8dbb646cdc..d60828cd0d 100644
--- a/compiler/codeGen/StgCmmEnv.hs
+++ b/compiler/codeGen/StgCmmEnv.hs
@@ -44,6 +44,7 @@ import Control.Monad
import Name
import StgSyn
import Outputable
+import UniqFM
-------------------------------------
-- Non-void types
@@ -158,7 +159,8 @@ cgLookupPanic id
pprPanic "StgCmmEnv: variable not found"
(vcat [ppr id,
text "local binds for:",
- vcat [ ppr (cg_id info) | info <- varEnvElts local_binds ]
+ pprUFM local_binds $ \infos ->
+ vcat [ ppr (cg_id info) | info <- infos ]
])