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llvm-mirror/test
Juergen Ributzka d783eb73d8 [DAG] During DAG legalization keep opaque constants even after expanding.
The included test case would return the incorrect results, because the expansion
of an shift with a constant shift amount of 0 would generate undefined behavior.

This is because ExpandShiftByConstant assumes that all shifts by constants with
a value of 0 have already been optimized away. This doesn't happen for opaque
constants and usually this isn't a problem, because opaque constants won't take
this code path - they are not supposed to. In the case that the opaque constant
has to be expanded by the legalizer, the legalizer would drop the opaque flag.
In this case we hit the limitations of ExpandShiftByConstant and create incorrect
code.

This commit fixes the legalizer by not dropping the opaque flag when expanding
opaque constants and adding an assertion to ExpandShiftByConstant to catch this
not supported case in the future.

This fixes <rdar://problem/16718472>

llvm-svn: 207304
2014-04-26 02:58:04 +00:00
..
Analysis Revert "blockfreq: Approximate irreducible control flow" 2014-04-25 23:16:58 +00:00
Assembler Reject alias to undefined symbols in the verifier. 2014-03-12 20:15:49 +00:00
Bindings Fix the ocaml test to not create a alias to a declaration. 2014-03-12 21:20:42 +00:00
Bitcode Add 'musttail' marker to call instructions 2014-04-24 20:14:34 +00:00
BugPoint Mark llvm/test/BugPoint/compile-custom.ll as XFAIL:vg_leak. 2014-04-23 14:51:12 +00:00
CodeGen [DAG] During DAG legalization keep opaque constants even after expanding. 2014-04-26 02:58:04 +00:00
DebugInfo Unbreak the gdb buildbot by not lowering dbg.declare intrinsics for arrays. 2014-04-25 23:00:25 +00:00
ExecutionEngine Ignore old JIT tests in AARch64 - CMake style 2014-02-25 09:31:00 +00:00
Feature Disable each MachineFunctionPass for 'optnone' functions, unless that 2014-03-31 17:43:35 +00:00
FileCheck
Instrumentation [asan] Fix instrumentation of x86 intel syntax inline assembly. 2014-04-24 09:56:15 +00:00
Integer
JitListener
Linker Fix DataLayout::operator==(). 2014-04-22 17:47:03 +00:00
LTO Add an -mattr option to the gold plugin to support subtarget features in LTO 2014-04-25 21:46:51 +00:00
MC [ARM64] Print preferred aliases for SFBM/UBFM in InstPrinter 2014-04-25 10:25:29 +00:00
Object [yaml2obj][ELF] ELF Relocations Support. 2014-04-11 04:13:39 +00:00
Other [PM] Add a new-PM-style CGSCC pass manager using the newly added 2014-04-21 11:12:00 +00:00
TableGen
tools ProfileData: Treat missing function counts as malformed 2014-04-25 02:45:33 +00:00
Transforms Revert commit r207302 since build failures 2014-04-26 02:03:17 +00:00
Unit With rpaths being set correctly, SHLIBPATH_VAR is not needed anymore. 2014-02-28 16:16:51 +00:00
Verifier Add 'musttail' marker to call instructions 2014-04-24 20:14:34 +00:00
YAMLParser
.clang-format
CMakeLists.txt [CMake] check-llvm: Include "bugpoint" in dependent list. 2014-03-04 16:13:30 +00:00
lit.cfg ARM: update even more tests 2014-04-03 17:35:22 +00:00
lit.site.cfg.in
Makefile With rpaths being set correctly, SHLIBPATH_VAR is not needed anymore. 2014-02-28 16:16:51 +00:00
Makefile.tests
TestRunner.sh