equalities into phi node operands for which the equality is known to
hold in the incoming basic block.  That's because replaceAllDominatedUsesWith
wasn't handling phi nodes correctly in general (that this didn't give wrong
results was just luck: the specific way GVN uses replaceAllDominatedUsesWith
precluded wrong changes to phi nodes).

llvm-svn: 152006

llvm-svn: 152005

new hash_value infrastructure, and replace their implementations using
hash_combine. This removes a complete copy of Jenkin's lookup3 hash
function (which is both significantly slower and lower quality than the
one implemented in hash_combine) along with a somewhat scary xor-only
hash function.

Now that APInt and APFloat can be passed directly to hash_combine,
simplify the rest of the LLVMContextImpl hashing to use the new
infrastructure.

llvm-svn: 152004

llvm-svn: 152003

Some BBs can become dead after codegen preparation. If we delete them here, it
could help enable tail-call optimizations later on.
<rdar://problem/10256573>

llvm-svn: 152002

llvm-svn: 152001

llvm-svn: 152000

llvm-svn: 151999

llvm-svn: 151998

llvm-svn: 151997

llvm-svn: 151996

Use uint8_t instead of enums to store values in X86 disassembler table. Shaves 150k off the size of X86DisassemblerDecoder.o

llvm-svn: 151995

we're making.  We only ignore implicit casts.  Add a testcase showing that
we get the right behavior with explicit casts.

llvm-svn: 151994

reported by Richard Smith.

llvm-svn: 151993

llvm-svn: 151992

resolution of core issue 1454.

llvm-svn: 151991

llvm-svn: 151989

llvm-svn: 151986

- Shrink the opcode field to 16 bits.
- Shrink the AsmVariantID field to 8 bits.
- Store the mnemonic string in a string table, store a 16 bit index.
- Store a pascal-style length byte in the string instead of a null terminator,
  so we can avoid calling strlen on every entry we visit during mnemonic search.

Shrinks X86AsmParser.o from 434k to 201k on x86_64 and eliminates relocs from the table.

llvm-svn: 151984

StringToOffsetTable: Allow uniquing the first element, add an option to skip appending a terminating null.

llvm-svn: 151983

llvm-svn: 151982

While at it bump the small vector size a bit, it's inside a heap-allocated class.

llvm-svn: 151980

llvm-svn: 151979

llvm-svn: 151978

llvm-svn: 151977

Move the NonPOD struct out of the anonymous namespace instead of adding llvm:: everywhere to fix the HashingTest on MSVC .

chandlerc proposed this better solution on IRC.

llvm-svn: 151974

llvm-svn: 151973

llvm-svn: 151971

unittests/ADT/HashingTest.cpp: Temporarily disable a new test introduced in r151891, to appease msvc.

llvm-svn: 151970

files in source/Plugins/Disassembler/llvm not being handled properly
by git.

llvm-svn: 151969

llvm-svn: 151968

Avoid an unnecessary recursive loop between type canonicalization and NNS canonicalization which would (rarely) lead to memory corruption.  While I'm here, simplify.  Fixes PR12166.  Not committing a testcase because it's impossible to reduce it.

llvm-svn: 151967

Currently TestDataFormatterPythonSynth is failing because of an issue with children capping. Splitting the test case in two so we better isolate the issue and also for better logical separation

llvm-svn: 151966

<rdar://problem/10196277>

llvm-svn: 151965

[analyzer] do not warn about returning stack-allocated memory when it comes from an ancestor stack frame.

llvm-svn: 151964

trivially-copyable. 50KiB reduction in clang binary size.

llvm-svn: 151963

fixed a few potential NULL-pointer derefs in ValueObject
we have a way to provide docstrings for properties we add to the SWIG layer - a few of these properties have a docstring already, more will come in future commits
added a new bunch of properties to SBData to make it more natural and Python-like to access the data they contain

llvm-svn: 151962

 - This is a more reliable default, as it behaves better on failure and also
   ensures that we create *new* files (instead of reusing existing inodes). This
   is useful for other applications (like lldb) which want to cache inode's to
   know when a file has been rewritten.

llvm-svn: 151961

Frontend: Don't automatically create missing directories when using temporary files with createOutputFile()
 - This would otherwise happen as a side effect of llvm::sys::fs::unique_file creating parent directories.

llvm-svn: 151960

llvm-svn: 151959