- Yay for '-'s and simplifications!

 - I kept StringMap::GetOrCreateValue for compatibility purposes, this can
   eventually go away. Likewise the StringMapEntry Create functions still follow
   the old style.

 - NIFC.

llvm-svn: 76888

Fix frame index elimination to correctly handle thumb-2 addressing modes that don't allow negative offsets. During frame elimination convert *i12 opcode to a *i8 when necessary due to a negative offset.

llvm-svn: 76883

This introduces an LDA-internal DependencePair class. The intention is,
that this is a place where dependence testers can store various results
such as SCEVs describing conflicting iterations, breaking conditions,
distance/direction vectors, etc.

llvm-svn: 76877

llvm-svn: 76872

simplify it.

llvm-svn: 76866

llvm-svn: 76865

also apply to vectors.  This allows us to compile this:

#include <emmintrin.h>
__m128i a(__m128 a, __m128 b) { return a==a & b==b; }
__m128i b(__m128 a, __m128 b) { return a!=a | b!=b; }

to:

_a:
	cmpordps	%xmm1, %xmm0
	ret
_b:
	cmpunordps	%xmm1, %xmm0
	ret

with clang instead of to a ton of horrible code.

llvm-svn: 76863

no functionality change.

llvm-svn: 76859

llvm-svn: 76849

testcases to make sure it's being generated.

llvm-svn: 76843

llvm-svn: 76842

- Rename member function size(). New name is length().
- Store string beginning and length. Earlier it used to store string end.

llvm-svn: 76841

llvm-svn: 76839

Reverting r76825 and r76828, since they caused clang runtime errors and some build failure involving memset.

llvm-svn: 76838

llvm-svn: 76837

llvm-svn: 76836

Derive MDNode from MetadataBase instead of Constant. Emit MDNodes into METADATA_BLOCK in bitcode file.

llvm-svn: 76834

llvm-svn: 76829

out of memory, and also make the default memory manager allocate more memory
when it runs out.

Also, switch function stubs and global data over to using the BumpPtrAllocator.

This makes it so the JIT no longer mmaps (or the equivalent on Windows) 16 MB
of memory, and instead allocates in 512K slabs.  I suspect this size could go
lower, especially on embedded platforms, now that more slabs can be allocated.

llvm-svn: 76828

malloc, so there should be no functional changes to other code.

These changes are necessary since I have plans to use this allocator in the JIT
memory manager, and it needs a special allocator.

I also added some tests which helped me pinpoint some bugs.

llvm-svn: 76825

a better solution for it in the future.

llvm-svn: 76818

llvm-svn: 76817

which stand for no-unsigned-wrap and no-signed-wrap.

llvm-svn: 76810

Reorder if-else branches as suggested by Bill.

llvm-svn: 76808

llvm-svn: 76806

llvm-svn: 76803

Constify the key in Mi2IndexMap.

llvm-svn: 76801

llvm-svn: 76799

simplification.
 - NFC

llvm-svn: 76789

llvm-svn: 76787

llvm-svn: 76786

llvm-svn: 76782

Put comment printing under asm-verbose.

llvm-svn: 76780

llvm-svn: 76778

Make some changes suggested by Bill and Evan.

llvm-svn: 76775

llvm-svn: 76769

llvm-svn: 76767

llvm-svn: 76765

This fixes unittest failure.

llvm-svn: 76764

llvm-svn: 76762