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authorMagnus Lång <[email protected]>2017-03-28 14:01:04 +0200
committerMagnus Lång <[email protected]>2017-03-28 14:01:04 +0200
commitaf3f9ca6fa5b207e7619590723f80002d82a013a (patch)
tree11b54bd72a18ad9e53e5c1d146cdb6ec1aa62cca /lib
parent48b5cc3c35e1d94807e9587c222a41c3cd513f64 (diff)
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hipe_icode_range: Add comment about side-effects
Diffstat (limited to 'lib')
-rw-r--r--lib/hipe/icode/hipe_icode_range.erl3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/hipe/icode/hipe_icode_range.erl b/lib/hipe/icode/hipe_icode_range.erl
index d1ffb105f4..287b1c80fe 100644
--- a/lib/hipe/icode/hipe_icode_range.erl
+++ b/lib/hipe/icode/hipe_icode_range.erl
@@ -395,6 +395,9 @@ analyse_call(Call, LookupFun) ->
Args = hipe_icode:args(Call),
Fun = hipe_icode:call_fun(Call),
Type = hipe_icode:call_type(Call),
+ %% This call has side-effects (it might call LookupFun which sends messages to
+ %% hipe_icode_coordinator to update the argument ranges of Fun), and must thus
+ %% not be moved into the case statement.
DstRanges = analyse_call_or_enter_fun(Fun, Args, Type, LookupFun),
case hipe_icode:call_dstlist(Call) of
[] ->