Will Schmidt 723bdb5e3f Disable IsSub subregister assert. pr18663. ... This is a follow-up to the activity in the bug at http://llvm.org/bugs/show_bug.cgi?id=18663 . The underlying issue has to do with how the KILL pseudo-instruction is handled. I defer to Hal/Jakob/Uli for additional details and background. This will disable the (bad?) assert, add an associated fixme comment, and add a pair of tests. The code change and the pr18663-2.ll test are copied from the referenced bug. That test does not immediately fail in my environment, but I have added the pr18663.ll test which does. (Comment from Hal) to provide everyone else with some context, this assert was not bad when it was written. At that time, we only generated KILL pseudo instructions around subregister copies. This logic, unfortunately, had its own problems. In r199797, the relevant logic in MachineCopyPropagation was replaced to generate KILLs for other kinds of copies too. This change in semantics broke this now-problematic assumption in AggressiveAntiDepBreaker. The AggressiveAntiDepBreaker really needs a proper cleanup to deal with the change, but removing the assert (which just allows the function to return false) is a safe conservative behavior, and should do for the time being. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214429 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-31 19:50:53 +00:00
..
Analysis	Add @llvm.assume, lowering, and some basic properties	2014-07-25 21:13:35 +00:00
Assembler	verify-uselistorder: Change the default -num-shuffles=5	2014-07-31 18:46:24 +00:00
Bindings
Bitcode	verify-uselistorder: Change the default -num-shuffles=5	2014-07-31 18:46:24 +00:00
BugPoint
CodeGen	Disable IsSub subregister assert. pr18663.	2014-07-31 19:50:53 +00:00
DebugInfo	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
ExecutionEngine	[MCJIT] Fix the ARM BR24 relocation in RuntimeDyldMachO.	2014-07-30 03:35:05 +00:00
Feature	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
FileCheck	Add missing test for r214210.	2014-07-29 22:57:59 +00:00
Instrumentation	[msan] Fix handling of array types.	2014-07-31 11:02:27 +00:00
Integer
JitListener
Linker	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
LTO
MC	Add mtpid/mfpid for BookE.	2014-07-30 23:59:11 +00:00
Object	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
Other
TableGen
tools	llvm-profdata: Add a test for mismatched numbers of counters	2014-07-30 23:36:06 +00:00
Transforms	InstCombine: Correctly propagate NSW/NUW for x-(-A) -> x+A	2014-07-31 04:49:29 +00:00
Unit
Verifier	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Rename llvm-uselistorder => verify-uselistorder	2014-07-30 17:11:27 +00:00
lit.cfg	Rename llvm-uselistorder => verify-uselistorder	2014-07-30 17:11:27 +00:00
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh