llvm-svn: 60859

"else" clause, e.g.,

  if (int X = foo()) {
  } else {
    if (X) { // warning: X is always zero in this context
    }
  }

Fixes rdar://6425550 and lets me think about something other than
DeclContext.

llvm-svn: 60858

them. The DAG combiner expects that nodes that are transformed have one value
result.

llvm-svn: 60857

The "real" fix for <rdar://problem/6424347> clang on xcode: Assertion failed: (0 && "unexpected type"), function mergeTypes,

Commit r60845 was premature.

llvm-svn: 60852

llvm-svn: 60851

llvm-svn: 60850

llvm-svn: 60849

llvm-svn: 60848

Fix <rdar://problem/6424347> clang on xcode: Assertion failed: (0 && "unexpected type"), function mergeTypes,

llvm-svn: 60845

Only perform SETO/SETC to JO/JC conversion if extractvalue is coming from an arithmetic with overflow instruction.

llvm-svn: 60844

Declare PerIDCache as IdentifierInfo** instead of void*.  This is just cleaner.  No performance change.

llvm-svn: 60843

llvm-svn: 60842

llvm-svn: 60841

llvm-svn: 60840

Fix regression caused by fixing <rdar://problem/6429113> clang ObjC rewriter: crash rewriting file with Blocks and properties

llvm-svn: 60839

llvm-svn: 60838

for promoted integer types, eg: i16 on ppc-32, or
i24 on any platform.  Complete support for arbitrary
precision integers would require handling expanded
integer types, eg: i128, but I couldn't be bothered.

llvm-svn: 60834

llvm-svn: 60833

causing a bunch of failures when running
"make ENABLE_EXPENSIVE_CHECKS=1 check".

llvm-svn: 60832

llvm-svn: 60831

Use a scoped object to manage entry/exit from a parser scope rather than explicitly calling EnterScope/ExitScope

llvm-svn: 60830

bit convert that changes the number of elements of a shuffle.

llvm-svn: 60829

Fix MachineCodeEmitter to use uintptr_t instead of intptr_t. This avoids some overflow issues. Patch by Thomas Jablin.

llvm-svn: 60828

llvm-svn: 60827

llvm-svn: 60826

to reflect reality.

llvm-svn: 60825

Fix a bug introduced by r59265. If lazy compilation is disabled, return actual function ptr instead of ptr to stub if function is already compiled.

llvm-svn: 60822

llvm-svn: 60821

parallel, allowing it to decide that P/Q must alias if A/B
must alias in things like:
 P = gep A, 0, i, 1
 Q = gep B, 0, i, 1

This allows GVN to delete 62 more instructions out of 403.gcc.

llvm-svn: 60820

llvm-svn: 60819

llvm-svn: 60818

node latencies. Use CalcLatency instead of manual code in
CalculatePriorities to keep it consistent. Previously it
computed slightly different results.

llvm-svn: 60817

llvm-svn: 60816

- Emit DW_AT_byte_size for struct and union of size zero.
- Emit DW_AT_declaration for forward type declaration.

llvm-svn: 60812

- Fix bug 3185, with misc other cleanups.
- Needed to implement SPUInstrInfo::InsertBranch(). CAUTION: Not sure what
  gets or needs to get passed to InsertBranch() to insert a conditional
  branch. This will abort for now until a good test case shows up.

llvm-svn: 60811

Modify the move emulation according to the excellent design of Howard Hinnant. Makes for much nicer syntax when smart pointers are used consistently. Also, start converting internal argument passing of Parser to smart pointers.

llvm-svn: 60809

Fix to BasicStoreManager::getElementLValue: If the base region is a symbol, layer an AnonTypedRegion on top of it.

llvm-svn: 60808

overflow/carry from the "arithmetic with overflow" intrinsics. It searches the
machine basic block from bottom to top to find the SETO/SETC instruction that is
its conditional. If an instruction modifies EFLAGS before it reaches the
SETO/SETC instruction, then it defaults to the normal instruction emission.

llvm-svn: 60807

The Cost field is removed. It was only being used in a very limited way,
to indicate when the scheduler should attempt to protect a live register,
and it isn't really needed to do that. If we ever want the scheduler to
start inserting copies in non-prohibitive situations, we'll have to
rethink some things anyway.

A Latency field is added. Instead of giving each node a single
fixed latency, each edge can have its own latency. This will eventually
be used to model various micro-architecture properties more accurately.

The PointerIntPair class and an internal union are now used, which
reduce the overall size.

llvm-svn: 60806

invalidateCachedPointerInfo.  Thanks to Bill for sending me
a testcase.

llvm-svn: 60805