llvm-svn: 91823

llvm-svn: 91822

the underlying PHI node insertion issue in SSAUpdate is fixed.

llvm-svn: 91821

'GetValueInMiddleOfBlock' case, instead of inserting 
duplicates.

A similar fix is almost certainly needed by the machine-level
SSAUpdate implementation.

llvm-svn: 91820

llvm-svn: 91819

bit more verbose, but optimize to much shorter code.

llvm-svn: 91817

llvm-svn: 91816

llvm-svn: 91815

implement some optimizations for MIN(MIN()) and MAX(MAX()) and 
MIN(MAX()) etc.  This substantially improves the code in PR5822 but
doesn't kick in much elsewhere.  2 max's were optimized in 
pairlocalalign and one in smg2000.

llvm-svn: 91814

llvm-svn: 91813

Use the presence of NSW/NUW to fold "icmp (x+cst), x" to a constant in
cases where it would otherwise be undefined behavior.

Surprisingly (to me at least), this triggers hundreds of the times in
a few benchmarks: lencode, ldecode, and 466.h264ref seem to *really*
like this.

llvm-svn: 91812

a bunch in lencode, ldecod, spass, 176.gcc, 252.eon, among others.  It is 
also the first part of PR5822

llvm-svn: 91811

llvm-svn: 91810

llvm-svn: 91790

cache a pointer as being unavailable due to phi trans in the
wrong place.  This would cause later queries to fail even when
they didn't involve phi trans.

llvm-svn: 91787

llvm-svn: 91786

llvm-svn: 91784

llvm-svn: 91783

llvm-svn: 91780

llvm-svn: 91778

llvm-svn: 91777

llvm-svn: 91776

rename dprintf to dbgpritnf, in order to fix build with glibc (which already defines dprintf in stdio.h

llvm-svn: 91775

llvm-svn: 91774

llvm-svn: 91773

1. In indirect load/store insns , the name of fsr should be emitted as INDF.
2. include standard asmbly headers in generated asmbly.

llvm-svn: 91768

llvm-svn: 91764

where instcombine would have to split a critical edge due to a
phi node of an invoke.  Since instcombine can't change the CFG,
it has to bail out from doing the transformation.

llvm-svn: 91763

* change FindElementAndOffset to return a uint64_t instead of unsigned, and
  to identify the type to be used for that result in a GEP instruction.
* move "isa<ConstantInt>" to be first in conditional.
* replace some dyn_casts with casts.
* add a comment about handling mem intrinsics.

llvm-svn: 91762

llvm-svn: 91757

llvm-svn: 91756

llvm-svn: 91754

llvm-svn: 91752

incarnations), integrated into the MC framework.  

The disassembler is table-driven, using a custom TableGen backend to 
generate hierarchical tables optimized for fast decode.  The disassembler 
consumes MemoryObjects and produces arrays of MCInsts, adhering to the 
abstract base class MCDisassembler (llvm/MC/MCDisassembler.h).

The disassembler is documented in detail in

- lib/Target/X86/Disassembler/X86Disassembler.cpp (disassembler runtime)
- utils/TableGen/DisassemblerEmitter.cpp (table emitter)

You can test the disassembler by running llvm-mc -disassemble for i386
or x86_64 targets.  Please let me know if you encounter any problems
with it.

llvm-svn: 91749

Based on patch by Michael Beck!

llvm-svn: 91745

llvm-svn: 91744

llvm-svn: 91743

llvm-svn: 91742

llvm-svn: 91741

Make some methods const.  The only interesting change here is that
it changes raw_fd_ostream::preferred_buffer_size to return zero on
a scary stat failure instead of setting the stream to an error state.
This method really should not mutate the stream.

llvm-svn: 91740