Duncan P. N. Exon Smith ea8cbe9782 Bitcode: Stop assuming non-null fields ... When writing the bitcode serialization for the new debug info hierarchy, I assumed two fields would never be null. Drop that assumption, since it's brittle (and crashes the `BitcodeWriter` if wrong), and is a check better left for the verifier anyway. (No need for a bitcode upgrade here, since the new hierarchy is still not in place.) The fields in question are `MDCompileUnit::getFile()` and `MDDerivedType::getBaseType()`, the latter of which isn't null in test/Transforms/Mem2Reg/ConvertDebugInfo2.ll (see !14, a pointer to nothing). While the testcase might have bitrotted, there's no reason for the bitcode format to rely on non-null for metadata operands. This also fixes a bug in `AsmWriter` where if the `file:` is null it isn't emitted (caught by the double-round trip in the testcase I'm adding) -- this is a required field in `LLParser`. I'll circle back to ConvertDebugInfo2. Once the specialized nodes are in place, I'll be trying to turn the debug info verifier back on by default (in the newer module pass form committed r206300) and throwing more logic in there. If the testcase has bitrotted (as opposed to me not understanding the schema correctly) I'll fix it then. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229960 91177308-0d34-0410-b5e6-96231b3b80d8		2015-02-20 03:17:58 +00:00
..
Analysis	[LoopAccesses] Add -analyze support	2015-02-19 19:15:19 +00:00
Assembler	Bitcode: Stop assuming non-null fields	2015-02-20 03:17:58 +00:00
Bindings
Bitcode
BugPoint
CodeGen	[x86] Make the new vector shuffle legality test on by default, which	2015-02-20 03:05:47 +00:00
DebugInfo	DebugInfo: Match Name and DisplayName in testcase	2015-02-19 23:48:17 +00:00
ExecutionEngine	Make frem.ll flush after calling printf.	2015-02-18 19:32:28 +00:00
Feature
FileCheck
Instrumentation	[sanitizer] fix a test broken by r229940	2015-02-20 02:12:25 +00:00
Integer
JitListener
Linker
LTO	Introduce Target::createNullTargetStreamer and use it from IRObjectFile.	2015-02-19 00:45:02 +00:00
MC	MC: Allow multiple comma-separated expressions on the .uleb128 directive.	2015-02-19 20:24:04 +00:00
Object
Other
SymbolRewriter
TableGen
tools	[Objdump] Fixing crash when printing symbols in ELF sections with special types.	2015-02-18 23:00:22 +00:00
Transforms	[InstCombine] Remove unnecessary variable indexing into single-element arrays	2015-02-20 03:05:53 +00:00
Unit
Verifier	Implement invoke statepoint verification.	2015-02-19 11:28:47 +00:00
YAMLParser
.clang-format
CMakeLists.txt
lit.cfg
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh