llvm-svn: 21427

the same block as the setjmp.  Thanks to Greg Pettyjohn for noticing this!

llvm-svn: 21403

llvm-svn: 20603

using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597

llvm-svn: 20479

llvm-svn: 20352

llvm-svn: 20343

llvm-svn: 20289

global with an alloca, which eventually gets promoted into a
register. This enables a lot of other optimizations later on.

llvm-svn: 20109

llvm-svn: 19958

llvm-svn: 19899

llvm-svn: 19432

llvm-svn: 19382

llvm-svn: 19370

failures from last night.

llvm-svn: 18832

in SPEC, the subsequent optimziations that we are after don't play with
with FP values, so disable this xform for them.  Really we just don't want
stuff like:

double G;   (always 0 or 412312.312)
  = G;

turning into:

bool G_b;
  = G_b ? 412312.312 : 0;

We'd rather just do the load.

-Chris

llvm-svn: 18819

down to actually BE a bool.  This allows simple value range propagation
stuff work harder, deleting comparisons in bzip2 in some hot loops.

This implements GlobalOpt/integer-bool.ll, which is the essence of the
loop condition distilled into a testcase.

llvm-svn: 18817

llvm-svn: 18800

gccas/gccld more than just a noop.

llvm-svn: 18456

-S

llvm-svn: 18440

in scary and unknown ways before we promote it.  This fixes the miscompilation
of 188.ammp that has been plauging us since a globalopt patch went in.

Thanks a ton to Tanya for helping me diagnose the problem!

llvm-svn: 18418

This doesn't fix anything that I'm aware of, just noticed it by inspection

llvm-svn: 18417

llvm-svn: 18109

value.  This allows us to turn more globals into constants and eliminate them.
This patch implements GlobalOpt/load-store-global.llx.

Note that this patch speeds up 255.vortex from:

Output/255.vortex.out-cbe.time:program 7.640000
Output/255.vortex.out-llc.time:program 9.810000

to:

Output/255.vortex.out-cbe.time:program 7.250000
Output/255.vortex.out-llc.time:program 9.490000

Which isn't bad at all!

llvm-svn: 17746

llvm-svn: 17734

constant value.  This makes the return value dead and allows for
simplification in the caller.

This implements IPConstantProp/return-constant.ll

This triggers several dozen times throughout SPEC.

llvm-svn: 17730

llvm-svn: 17719

argument pointers.  This is only valid to do if the function already
unconditionally loaded an argument or if the pointer passed in is known
to be valid.  Make sure to do the required checks.

This fixed ArgumentPromotion/control-flow.ll and the Burg program.

llvm-svn: 17718

as IPCP opportunities.

llvm-svn: 17680

llvm-svn: 17679

This implements IPConstantProp/recursion.ll

llvm-svn: 17666

This allows to elimination of a bunch of global pool descriptor args from
programs being pool allocated (and is also generally useful!)

llvm-svn: 17657

nightly testers

llvm-svn: 17646

llvm-svn: 17642

exciting to inline.  Only inline medium or small sized functions with a
single call site.

llvm-svn: 17588

llvm-svn: 17286

llvm-svn: 17161

llvm-svn: 17155

llvm-svn: 17136

llvm-svn: 17125