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authorBjörn Gustavsson <[email protected]>2017-11-28 07:28:25 +0100
committerBjörn Gustavsson <[email protected]>2018-01-22 14:23:52 +0100
commit9b0122b65bdcafbae2a3cfd3299903da0948acab (patch)
tree59405671dad4d8240978faaf4ea8e3dcdff289b5 /lib/hipe/rtl/hipe_rtl_primops.erl
parentb7ff9c0d76372f16d14ecaac04c6fbbbadaf9435 (diff)
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Don't build a stacktrace if it's only passed to erlang:raise/3
Consider the following function: function({function,Name,Arity,CLabel,Is0}, Lc0) -> try %% Optimize the code for the function. catch Class:Error:Stack -> io:format("Function: ~w/~w\n", [Name,Arity]), erlang:raise(Class, Error, Stack) end. The stacktrace is retrieved, but it is only used in the call to erlang:raise/3. There is no need to build a stacktrace in this function. We can avoid the building if we introduce an instruction called raw_raise/3 that works exactly like the erlang:raise/3 BIF except that its third argument must be a raw stacktrace.
Diffstat (limited to 'lib/hipe/rtl/hipe_rtl_primops.erl')
-rw-r--r--lib/hipe/rtl/hipe_rtl_primops.erl2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/hipe/rtl/hipe_rtl_primops.erl b/lib/hipe/rtl/hipe_rtl_primops.erl
index d646b78a3d..ce5433379e 100644
--- a/lib/hipe/rtl/hipe_rtl_primops.erl
+++ b/lib/hipe/rtl/hipe_rtl_primops.erl
@@ -396,6 +396,8 @@ gen_primop({Op,Dst,Args,Cont,Fail}, IsGuard, ConstTab) ->
[hipe_rtl:mk_call(Dst, Op, Args, Cont, Fail, not_remote)];
build_stacktrace ->
[hipe_rtl:mk_call(Dst, Op, Args, Cont, Fail, not_remote)];
+ raw_raise ->
+ [hipe_rtl:mk_call(Dst, Op, Args, Cont, Fail, not_remote)];
%% Only names listed above are accepted! MFA:s are not primops!
_ ->