llvm-svn: 80334

calls into a function and if the calls bring in arrays, try to merge
them together to reduce stack size.  For example, in the testcase
we'd previously end up with 4 allocas, now we end up with 2 allocas.

As described in the comments, this is not really the ideal solution
to this problem, but it is surprisingly effective.  For example, on
176.gcc, we end up eliminating 67 arrays at "gccas" time and another
24 at "llvm-ld" time.

One piece of concern that I didn't look into: at -O0 -g with
forced inlining this will almost certainly result in worse debug
info.  I think this is acceptable though given that this is a case
of "debugging optimized code", and we don't want debug info to
prevent the optimizer from doing things anyway.

llvm-svn: 80215

llvm-svn: 80204

and other code cleanups.  No functionality change.

llvm-svn: 80199

the command line.  This gives llvm-gcc developers
a way to control inlining (documented as "not intended
for end users").

llvm-svn: 79966

- One formatting change.

No intended functionality change.

llvm-svn: 77717

 - Some clients which used DOUT have moved to DEBUG. We are deprecating the
   "magic" DOUT behavior which avoided calling printing functions when the
   statement was disabled. In addition to being unnecessary magic, it had the
   downside of leaving code in -Asserts builds, and of hiding potentially
   unnecessary computations.

llvm-svn: 77019

instead of getAnalysis<TargetData>().

llvm-svn: 76982

llvm-svn: 76284

and it wasn't generating calls through @PLT for these functions.
hasLocalLinkage() is now false for available_externally,
I attempted to fix the inliner and dce to handle available_externally properly.
It passed make check.

llvm-svn: 72328

llvm-svn: 67578

the inliner; prevents nondeterministic behavior
when the same address is reallocated.
Don't build call graph nodes for debug intrinsic calls;
they're useless, and there were typically a lot of them.

llvm-svn: 67311

llvm-svn: 62279

back to 200; 400 seems to be too high, loses more than
it gains.

llvm-svn: 62107

compensation for turning off gcc's inliner.  This gets
us closer to the amount of inlining we were getting before.
It is not a win on everything, of course, but seems to
gain overall.

llvm-svn: 62058

llvm-svn: 61969

llvm-svn: 59758

inlining function, then increase the stack protection level on the inlining
function.

llvm-svn: 59757

llvm-svn: 58744

function.
 - This explicitly models the costs for functions which should
   "always" or "never" be inlined. This fixes bugs where such costs
   were not previously respected.

llvm-svn: 58450

 - No functionality change.

llvm-svn: 58355

llvm-svn: 56716

s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56622

llvm-svn: 56527

Do not check isDeclaration() in hasNote(). It is clients' responsibility.

llvm-svn: 56524

Function Notes also. Function notes are stored at index ~0.

llvm-svn: 56511

llvm-svn: 56477

edges one by one by hand.

llvm-svn: 55836

llvm-svn: 55779

llvm-svn: 55745

llvm-svn: 55712

llvm-svn: 55708

llvm-svn: 55676

llvm-svn: 55673

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 50696

2. Do not use # of basic blocks as part of the cost computation since it doesn't really figure into function size.
3. More aggressively inline function with vector code.

llvm-svn: 49061

Increasing the inline limit from (overly conservative) 200 to 300. Given each BB costs 20 and each instruction costs 5, 200 means a 4 BB function + 24 instructions (actually less because caller's size also contributes to it).

Furthermore, double the limit when more than 10% of the callee instructions are vector instructions. Multimedia kernels tend to love inlining.

llvm-svn: 48725

itself sometimes negative.

llvm-svn: 47786

the inliner pass.  Patch by Robert Zeh.

llvm-svn: 45903