- <rdar://problem/6652110> clang should support weak_import

llvm-svn: 66270

llvm-svn: 66269

llvm-svn: 66268

to find a tiny mouse hole to squeeze through, it struck
me that globals without a name can be considered internal
since they can't be referenced from outside the current
module.  This patch makes GlobalOpt give them internal
linkage.  Also done for aliases even though they always
have names, since in my opinion anonymous aliases should
be allowed for consistency with global variables and
functions.  So if that happens one day, this code is ready!

llvm-svn: 66267

Add some assertions along the way...

llvm-svn: 66265

llvm-svn: 66264

llvm-svn: 66263

llvm-svn: 66262

Stack dump:
0.	Program arguments: clang pr3399.c -S -O3 
1.	<eof> parser at end of file
2.	Code generation
3.	Running pass 'Linear Scan Register Allocator' on function '@foo'
Abort

llvm-svn: 66261

get nice and happy stack traces when we crash in an optimizer or codegen.  For
example, an abort put in UnswitchLoops now looks like this:

Stack dump:
0.	Program arguments: clang pr3399.c -S -O3 
1.	<eof> parser at end of file
2.	per-module optimization passes
3.	Running pass 'CallGraph Pass Manager' on module 'pr3399.c'.
4.	Running pass 'Loop Pass Manager' on function '@foo'
5.	Running pass 'Unswitch loops' on basic block '%for.inc'
Abort

llvm-svn: 66260

 - Also, diagnose weak applied to types.

llvm-svn: 66259

llvm-svn: 66258

llvm-svn: 66257

IntrNoMem.

llvm-svn: 66256

llvm-svn: 66255

llvm-svn: 66254

llvm-svn: 66252

llvm-svn: 66251

llvm-svn: 66250

their main routines.  This makes the tools print their argc/argv
commands if they crash.

llvm-svn: 66248

llvm-svn: 66247

llvm-svn: 66246

llvm-svn: 66245

llvm-svn: 66244

llvm-svn: 66243

llvm-svn: 66242

llvm-svn: 66241

with multiple chain operands. This can occur when the scheduler
has added chain operands to a node that already has a chain
operand, in order to handle physical register dependencies.

This fixes an llvm-gcc bootstrap failure on x86-64 introduced
in r66058.

llvm-svn: 66240

functions by name. This fixes PR718.

llvm-svn: 66239

llvm-svn: 66237

This is needed so debug info doesn't change codegen.

llvm-svn: 66235

Delete this default branch, because we're going to generate our own.

llvm-svn: 66234

llvm-svn: 66233

We are still not out of woods yet.

llvm-svn: 66232

llvm-svn: 66231

Patch by Viktar Zviarovich!

llvm-svn: 66230

llvm-svn: 66229

llvm-svn: 66227

llvm-svn: 66226

debug intrinsics correctly.

llvm-svn: 66225