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Taken from the OTP test suites and changed accordingly for HiPE.
Used to be problematic in the tests that matched against a segment
of 'bad_size'. This was corrected in the BEAM compiler for OTP 19.
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As a first step to removing the test_server application as
as its own separate application, change the inclusion of
test_server.hrl to an inclusion of ct.hrl and remove the
inclusion of test_server_line.hrl.
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* margnus1/bs_unit_fix:
hipe: Fix signed compares of unsigned sizes
beam: Fix overflow bug in i_bs_add_jId
hipe: Add tests for bad bit syntax float sizes
Add a case testing the handling of guards involving binaries
Add some more binary syntax construction tests
hipe: Guard against enormous numbers in ranges
hipe: Fix constructing huge binaries
hipe: Fix binary constructions failing with badarith
Add missing corner-case to bs_construct_SUITE
hipe: Allow unsigned args in hipe_rtl_arith
hipe: test unit size match in bs_put_binary_all
hipe: test unit size match in bs_append
Fix hipe_rtl_binary_construct:floorlog2/1
OTP-13272
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The code generated by the HiPE compiler for pattern matching with
UTF binaries was such that sometimes THE_NON_VALUE was stored in
the roots followed by the garbage collector. This was not an issue
for the vanilla native code compiler, but was problematic for the
ErLLVM back-end.
Fix the issue by not storing THE_NON_VALUE in the live roots. An
alternative fix would be to change the code of the garbage collector.
With this fix, there are no more (known) failing test cases for the
ErLLVM back-end (at least on x86_64 with LLVM 3.5, which is the
configuation regularly tested). Thanks to @margnus1 for the fix.
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Also, some of the branches were testing sizes in bits against a constant
?MAX_BINSIZE, which was in bytes. The signed comparisons masked this
mistake. These branches have been removed since all sizes in bits that
fit in a machine word are valid binary sizes.
Finally, a test that reproduces the issue was added to bs_construct,
along with a test for one of the cases (bs_init<0>(...)) when the test
against ?MAX_BINSIZE must be changed to unsigned rather than removed.
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The HiPE compiler was leaking exceptions out of guards involving
binaries with `strange' arithmetic in them. Fixed by the set of
changes in this pull request.
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Some more cases (taken from the BEAM bs_construct suite) that used to
show different behaviour than BEAM when compiled to native code were
included in the appropriate test file of the HiPE test suite.
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* kostis/hipe-bs-match-huge-bin:
Fix matching with huge binaries
Compile without errors for exported variables
OTP-13092
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copy_offset_int_big was assuming (Offset + Size - 1) (Tmp9 in the first
BB) would not underflow. It was also unconditionally reading and writing
the binary even when Size was zero, unlike copy_int_little, which is the
only other case of bs_put_integer that does not have a short-circuit on
Size = 0.
This was causing segfaults when constructing binaries starting with a
zero-length integer field, because a logical right shift was used to
compute an offset in bytes (which became 0x1fffffffffffffff) to read in
the binary.
Tests, taken from the emulator bs_construct_SUITE, were also added.
The complete credit for the report and the fix goes to Magnus Lång.
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In certain cases of matching with very big binaries, the HiPE compiler
generated code that would fail the match, even in cases that the matching
was successful. The problem was more quite noticeable on 32-bit platforms
where certain integer quantities would be represented as bignums.
Brief summary of changes:
* gen_rtl({bs_skip_bits, ...}, ...) could not handle too large constants.
Previously the constants were truncated to word size.
* hipe_rtl_binary_match:make_size/3 erroneously assumed that the output
of first_part/3 would not overflow when multiplied by 8, which is no
longer true. To maintain full performance, the overflow test is only
performed when BitsVar was a bignum. Thus, the fast path is identical
to before.
* hipe_rtl_binary_match:set_high/2 was assuming that only bits below
bit 27 were ever set in arguments to bs_skip_bits, which is not only
false when the arguments are bignums, but also on 64-bit platforms.
The commit includes a test taken from the bs_match_bin_SUITE.
Most of the credit for finding these HiPE compiler errors and for
creating appropriate fixes for them should go to Magnus Lång.
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Create tests for the HiPE native code compiler. This is the first
part of the effort and contains tests that check that the native
code produced by the HiPE compiler for binaries and bitstrings is
OK and behaves similarly to the code produced by the BEAM compiler.
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