llvm-svn: 66336

llvm-svn: 66333

signal handlers to prevent reentrance on unrelated things (a sigabort
where the handle bus errors) also, clear the signal mask so that the
signal doesn't infinitely reissue.  This fixes rdar://6654827 -
Crash causes clang to loop

llvm-svn: 66330

1. When the JIT is asked to remove a function, updating it's
   mapping to 0, we invalidate any function stubs used only 
   by that function.  Now, also invalidate the JIT's mapping
   from the GV the stub pointed to, to the address of the GV.

2. When dlsym stubs for cross-process JIT are enabled, do not
   abort just because a named function cannot be found in the
   JIT's process.

3. Fix various assumptions about when it is ok to use the lazy
   resolver when non-lazy JITing is enabled.

llvm-svn: 66324

the same say the "test" instruction does in overflow cases,
so eliminating the test is only safe when those bits aren't
needed, as is the case for COND_E and COND_NE, or if it
can be proven that no overflow will occur. For now, just
restrict the optimization to COND_E and COND_NE and don't
do any overflow analysis.

llvm-svn: 66318

table.
 - No functionality change.

llvm-svn: 66289

an optimization.

llvm-svn: 66288

llvm-svn: 66279

Lennart Augustsson!

llvm-svn: 66272

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

llvm-svn: 66264

llvm-svn: 66262

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

IntrNoMem.

llvm-svn: 66256

llvm-svn: 66255

llvm-svn: 66254

llvm-svn: 66252

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

llvm-svn: 66248

llvm-svn: 66245

llvm-svn: 66244

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

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: 66227

debug intrinsics correctly.

llvm-svn: 66225

llvm-svn: 66224

llvm-svn: 66223

INC64_32r and INC64_16r, because these instructions are encoded
differently on x86-64. This fixes JIT regressions on x86-64 in
kimwitu++ and others.

llvm-svn: 66207

The extra operand didn't appear to cause any trouble, but it was
erroneous regardless.

llvm-svn: 66206

negative one, as subtracts of immediates are canonicalized
to adds.

llvm-svn: 66180

llvm-svn: 66171

If non constant local GV named A is used by a constant local GV named B (e.g. llvm.dbg.variable) and B is not used by anyone else then eliminate A as well as B.

In other words, debug info should not interfere in removal of unused GV.
--This life, and those below, will be ignored--

M    test/Transforms/GlobalOpt/2009-03-03-dbg.ll
M    lib/Transforms/IPO/GlobalOpt.cpp

llvm-svn: 66167

llvm-svn: 66160

llvm-svn: 66158

Be more careful about choosing restore points when doing restore folding.  This fixes some subtle miscompilations.

llvm-svn: 66147

feels a kinship to machine stacks that grow down.  Now we get
stuff like this:

Stack dump:
0.	Program arguments: clang clang_crash_Iw2Osj.mi 
1.	/Developer/SDKs/MacOSX10.5.sdk/usr/lib/gcc/i686-apple-darwin9/4.0.1/include/xmmintrin.h:624:1: parsing function body '_mm_cvtpi16_ps'
2.	/Developer/SDKs/MacOSX10.5.sdk/usr/lib/gcc/i686-apple-darwin9/4.0.1/include/xmmintrin.h:624:1: in compound statement ('{}')
Abort

llvm-svn: 66145

llvm-svn: 66144

llvm-svn: 66143