hashing infrastructure. I wonder why we don't just use StringMap here,
and I may revisit the issue if I have time, but for now I'm just trying
to consolidate.

llvm-svn: 152023

Fix a bug in the mangler where in 'namespace std { extern "C" {X;} }', X would not be seen to be in ::std::.

Migrate two other places where the same logic is used to use the helper function that already exists.

llvm-svn: 152022

complains about the truncation of a 64-bit constant to a 32-bit value
when size_t is 32-bits wide, but *only with static_cast*!!! The exact
signal that should *silence* such a warning, and in fact does silence it
with both GCC and Clang.

Anyways, this was causing grief for all the MSVC builds, so pointless
change made. Thanks to Nikola on IRC for confirming that this works.

llvm-svn: 152021

-Make sure we don't change to '__weak' a __block variable used as output.
-Make sure we don't apply __weak twice.

Fixes rdar://10520757&10521362

llvm-svn: 152020

llvm-svn: 152019

Introduce PreprocessingRecord::rangeIntersectsConditionalDirective() which returns
true if a given range intersects with a conditional directive block.

llvm-svn: 152018

-Add location parameter for the directives callbacks
-Skip callbacks if the directive is inside a skipped range.
-Make sure the directive callbacks are invoked in source order.

llvm-svn: 152017

llvm-svn: 152016

have a process, then fetch the right runtime resolver when the process is made.

llvm-svn: 152015

llvm-svn: 152014

llvm-svn: 152013

kinds as the underlying string literals, and we silently drop the ud-suffix;
those issues will be fixed by subsequent patches.

llvm-svn: 152012

llvm-svn: 152011

The first def of a virtual register cannot also read the register.
Assert on such bad machine code instead of trying to fix it.
TwoAddressInstructionPass should never create code like that.

llvm-svn: 152010

We are already setting <undef> flags, and that is good enough. The
<imp-def> operands don't mean anything any more.

llvm-svn: 152009

MachineOperands that define part of a virtual register must have an
<undef> flag if they are not intended as read-modify-write operands.

The old trick of adding an <imp-def> operand doesn't work any longer.

Fixes PR12177.

llvm-svn: 152008

Remove a recursive visitation in ExprEngine that is no longer needed because the CFG is fully linearized.

llvm-svn: 152007

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