expressions.
 - This generally catches the important case of noreturn functions.

 - With the last two changes, we are down to 152 unreachable blocks emitted on
   403.gcc, vs the 1805 we started with.

llvm-svn: 76364

 - Emit variable declarations as "simple", we want to avoid forcing the creation
   of a dummy basic block, but still need to make the variable available for
   later use.

 - With that, we can now skip IRgen for other unreachable statements (which
   don't define a label).

 - Anders, I added two fixmes on calls to EmitVLASize, can you check them?

llvm-svn: 76361

some target hooks.

llvm-svn: 75895

Also, enable them in sema so that they are tested, and now that the x86 backend
has stablized.

llvm-svn: 74983

llvm-svn: 74412

function attributes. There are predefined macros that are defined when stack
protectors are used: __SSP__=1 with -fstack-protector and __SSP_ALL__=2 with
-fstack-protector-all.

llvm-svn: 74405

llvm-svn: 74304

llvm-svn: 73938

by Mark Cianciosa on cfe-dev.

llvm-svn: 73672

It is possible that main input file does not have any symbol with debug info. To  handle this edge case, always create main compile unit first.
This fixes PR 4228.

llvm-svn: 73520

llvm-svn: 73514

static intializers for structs.

llvm-svn: 73349

x86-32.  This is slightly messy, but I think it's consistent with gcc.

llvm-svn: 73306

always_inline from working.

llvm-svn: 73273

source directory.

llvm-svn: 73094

 - <rdar://problem/6948443> WARNING: Linking two modules of different data
   layouts!

llvm-svn: 73093

llvm-svn: 73022

get rid of a few more clang vector builtins.

llvm-svn: 73015

insert/extract; the relevant instructions are defined to take only an 
i32.

llvm-svn: 73005

llvm-svn: 73004

 - <rdar://problem/6948703> clang treats weak_import like weak

llvm-svn: 72967

when generating a coercion for ABI handling purposes.
 - This may only manifest itself when building at -O0, but the practical effect
   is that other arguments may get clobbered.

 - <rdar://problem/6930451> [irgen] ABI coercion clobbers other arguments

llvm-svn: 72932

llvm-svn: 72803

llvm-svn: 72780

 - Avoids running any LLVM optimizations, even at -O2, etc., while still keeping
   any language changes these optimizations imply.

llvm-svn: 72742

Also, committing an #if 0'ed __builtin_setjmp and __builtin_longjmp 
implementation I've had sitting in my tree for a while.  I haven't 
enabled it because the LLVM backend support isn't complete yet.

llvm-svn: 72727

K&R-style definition.

llvm-svn: 72690

llvm-svn: 72687

llvm-svn: 72607

actually necessary in some obscure cases.

llvm-svn: 72585

llvm-svn: 72574

llvm-svn: 72573

any body can spot codegen bugs with volatile, or knows of any in the
bug database, let me know.

llvm-svn: 72572

getUnqualifiedType() doesn't strip off all qualifiers for non-canonical 
types.

llvm-svn: 72552

llvm-svn: 72504

llvm-svn: 72444

llvm-svn: 72441

llvm-svn: 72439

thing for non-aggregate types.
 - Otherwise we unnecessarily pin values to the stack and currently end up
   triggering a backend bug in one case.

 - This loose cooperation with LLVM to implement the ABI is pretty ugly.

 - <rdar://problem/6918722> [irgen] clang miscompile of many pointer varargs on
   x86-64

llvm-svn: 72419

Found by code inspection; I haven't seen this in real-world code.

llvm-svn: 72408