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2015-02-20sys_core_fold: Fix non-tail-recursive list comprehensionsBjörn Gustavsson
649d6e73 simplified opt_simple_let_2/6 a little bit too much, so that some list comprehensions in effect context were not properly tail-recursive.
2015-01-26sys_core_fold: Strengthen optimization of letrecs in effect contextBjörn Gustavsson
We used to evaluate the body of a 'letrec' in value context, even if the 'letrec' was being evaluated in effect context. In most cases, the context does not matter because the body is usually just an 'apply' which will never be optimized away. However, in the case of incorrect code described in the previous commit, it does matter. We can find such bad code by evaluating the body in effect context. For example, if we have the following incorrect code: letrec f/1 = fun(A) -> ... <use of Var> ... in let Var = <<2:301>> in apply(Arg) If the letrec is evaluated in effect context, the code will be reduced to: letrec f/1 = fun(A) -> ... <use of Var> ... in seq Var = <<2:301>> do apply(Arg) Now Var will be unbound and a later compiler pass will crash to ensure that the bad Core Erlang code is noticed. Also add a test case to ensure that the compiler crashes if the bug fixed in the previous commit re-surfaces.
2015-01-26lc_SUITE: Add shadow/1Björn Gustavsson
2015-01-26Modernize lc_SUITEBjörn Gustavsson
Remove ?line macros. Run test cases in parallel.
2014-03-05Do not export variables from comprehension cases in v3_coreAnthony Ramine
Code like the following snippet could make the compiler crash: f() -> [X = a || false] ++ [X = a || false]. Reported-by: Ulf Norell
2011-08-16emulator: Add a fourth element in exception stacktracesBjörn Gustavsson
This commit is a preparation for introducing location information (filename/line number) in stacktraces in exceptions. Currently a stack trace looks like: [{Mod1,Function1,Arity1}, . . . {ModN,FunctionN,ArityN}] Add a forth element to each tuple that can be used indication the filename and line number of the source file: [{Mod1,Function1,Arity1,Location1}, . . . {ModN,FunctionN,ArityN,LocationN}] In this commit, the fourth element will just be an empty list, and we will change all code that look at or manipulate stacktraces.
2011-04-12compiler tests: Reinstate ?MODULE macro in calls to test_lib:recompile/1Björn Gustavsson
In 3d0f4a3085f11389e5b22d10f96f0cbf08c9337f (an update to conform with common_test), in all test_lib:recompile(?MODULE) calls, ?MODULE was changed to the actual name of the module. That would cause test_lib:recompile/1 to compile the module with the incorrect compiler options in cloned modules such as record_no_opt_SUITE, causing worse coverage.
2011-02-23compiler: Eliminate some warningsBjörn Gustavsson
2011-02-17Rename Suite Callback to Common Test HookLukas Larsson
2011-02-17Fix formatting for compilerLukas Larsson
2011-02-17Add init_per_suite and end_per_suiteLukas Larsson
2011-02-17Add ts_install_scb to suite/0Lukas Larsson
2011-02-17Update compiler tests to conform with common_test standardLukas Larsson
2011-02-17Update all fin_per_testcase to end_per_testcase.Lukas Larsson
2010-04-01Merge branch 'bg/compiler-inliner' into devErlang/OTP
* bg/compiler-inliner: pmod_SUITE: Again test inlining parameterized modules compiler tests: Cope with missing args in function_clause for native code compiler tests: Compile a few more modules with 'inline' Consistently rewrite an inlined function_clause exception to case_clause compiler tests: Test the 'inline' option better compiler: Suppress bs_context_to_binary/1 for a literal operand compiler: Fix binary matching bug in the inliner sys_core_inline: Don't generated multiple compiler_generated annos OTP-8552 bg/compiler-inliner Several problems in the inliner have been fixed.
2010-03-26compiler tests: Cope with missing args in function_clause for native codeBjörn Gustavsson
Native-compiled code generates a different stack trace for function_clause exceptions - instead of the arguments for the function, only the arity is reported. Accept missing arguments if the test suite is native-compiled.
2010-03-26compiler tests: Compile a few more modules with 'inline'Björn Gustavsson
Since a function_clause exception in an inlined function will be changed to a case_clause exception, we must test for both.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP