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] Change LAA:getInfo to return a constant reference	2015-02-19 19:15:21 +00:00
AsmParser	IR: Fix MDType fields from unsigned to uint64_t	2015-02-19 23:56:07 +00:00
Bitcode	Bitcode: Stop assuming non-null fields	2015-02-20 03:17:58 +00:00
CodeGen	Revert r229944: EH: Prune unreachable resume instructions during Dwarf EH preparation	2015-02-20 02:15:36 +00:00
DebugInfo	llvm-pdbdump: Add flags controlling the type of values to dump.	2015-02-15 20:27:53 +00:00
ExecutionEngine	Don't deference the section_end() iterator.	2015-02-17 20:07:28 +00:00
Fuzzer	[fuzzer] one more experimental search mode: -use_coverage_pairs=1	2015-02-20 03:02:37 +00:00
IR	Bitcode: Stop assuming non-null fields	2015-02-20 03:17:58 +00:00
IRReader	Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.	2015-02-11 03:28:02 +00:00
LineEditor	Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.	2015-02-11 03:28:02 +00:00
Linker	Prefer SmallVector::append/insert over push_back loops.	2015-02-17 15:29:18 +00:00
LTO	[PM] Remove the old 'PassManager.h' header file at the top level of	2015-02-13 10:01:29 +00:00
MC	MC: Allow multiple comma-separated expressions on the .uleb128 directive.	2015-02-19 20:24:04 +00:00
Object	Introduce Target::createNullTargetStreamer and use it from IRObjectFile.	2015-02-19 00:45:02 +00:00
Option	Prefer SmallVector::append/insert over push_back loops.	2015-02-17 15:29:18 +00:00
ProfileData	InstrProf: Don't combine expansion regions with code regions	2015-02-18 19:01:06 +00:00
Support	Checking if TARGET_OS_IPHONE is defined isn't good enough for 10.7 and earlier.	2015-02-19 19:50:52 +00:00
TableGen	MSVC 2013 does not ICE on this code in the same fashion that MSVC 2012 did; NFC.	2015-02-16 19:33:36 +00:00
Target	[x86] Make the new vector shuffle legality test on by default, which	2015-02-20 03:05:47 +00:00
Transforms	[InstCombine] Remove unnecessary variable indexing into single-element arrays	2015-02-20 03:05:53 +00:00
CMakeLists.txt	Reverting r227452, which adds back the fuzzer library. Now excluding the fuzzer library based on LLVM_USE_SANITIZE_COVERAGE being set or unset.	2015-01-29 16:58:29 +00:00
LLVMBuild.txt
Makefile	Move DebugInfo to DebugInfo/DWARF.	2015-01-30 18:07:45 +00:00