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82eb231e2f
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11030 Commits

Author SHA1 Message Date
Chris Lattner
82eb231e2f Implement PowerPC/eqv-andc-orc-nor.ll:EQV3 
llvm-svn: 23494
 2005-09-28 18:04:52 +00:00
Chris Lattner
2d240ce480 learn to codegen not as NOR instead of xoris/xori 
llvm-svn: 23490
 2005-09-28 17:13:15 +00:00
Chris Lattner
dad2994a3a These nodes are all autogenerated 
llvm-svn: 23489
 2005-09-28 17:07:09 +00:00
Chris Lattner
6ce1d7dabb Constant fold llvm.sqrt 
llvm-svn: 23487
 2005-09-28 01:34:32 +00:00
Chris Lattner
cd79ed877a add a note about a way to improve this code further, that I won't be getting 
to right now.

llvm-svn: 23485
 2005-09-27 22:44:59 +00:00
Chris Lattner
80e4480cfa Fix a regression in my previous patch, fixing GlobalOpt/2005-09-27-Crash.ll 
and PR632.

llvm-svn: 23484
 2005-09-27 22:28:11 +00:00
Chris Lattner
4bc65cb445 Darwin, like many BSD systems, has a setjmp/longjmp which saves the signal mask 
on setjmp calls and restores it on longjmp calls (both of which require syscalls).

This makes the calls REALLY slow.  Use _setjmp/_longjmp instead.  This speeds up
hexxagon from 120.31s to 15.68s: from 5.53x slower than GCC to 28% faster than GCC.

llvm-svn: 23482
 2005-09-27 22:18:25 +00:00
Chris Lattner
4655e9de38 If the target prefers it, use _setjmp/_longjmp should be used instead of setjmp/longjmp for llvm.setjmp/llvm.longjmp. 
llvm-svn: 23481
 2005-09-27 22:15:53 +00:00
Chris Lattner
c7eb6f9169 initialize new flag 
llvm-svn: 23480
 2005-09-27 22:13:56 +00:00
Chris Lattner
8ff6df40ba Avoid spilling stack slots... to stack slots. 
llvm-svn: 23478
 2005-09-27 21:33:12 +00:00
Chris Lattner
b2fa69f4b2 Completely rewrite 'correct' eh support. This changes how setjmp insertion 
is performed so it is only at most once per function that contains an invoke
instead of once per invoke in the function.  This patch has the following perks:

1. It fixes PR631, which complains about slowness.
2. If fixes PR240, which complains about non-volatile vars being live across
   setjmp/longjmps.
3. It improves (but does not fix) the jmpbuf alignment issue on itanium by not
   forcing the jmpbufs to always be 8-bytes off the alignment of the structure.
4. It speeds up 253.perlbmk from 338s to 13.70s (a 25x improvement!), making us
   now about 4% faster than GCC.

Further improvements are also possible.

llvm-svn: 23477
 2005-09-27 21:18:17 +00:00
Chris Lattner
29f2ba1384 Make the pass name simpler 
llvm-svn: 23476
 2005-09-27 21:10:32 +00:00
Chris Lattner
bcba1677fd fix CBackend/2005-09-27-VolatileFuncPtr.ll 
llvm-svn: 23475
 2005-09-27 20:52:44 +00:00
Chris Lattner
92b0563eb3 allow demotion to volatile values, add support for invoke 
llvm-svn: 23473
 2005-09-27 19:39:00 +00:00
Chris Lattner
6d1a2716a4 Make sure to clear the CodeGenMap after each basic block is selected to avoid 
cross MBB pollution.

llvm-svn: 23470
 2005-09-27 17:45:33 +00:00
Jim Laskey
5a82322c66 Remove some redundancies. 
llvm-svn: 23469
 2005-09-27 17:32:45 +00:00
Chris Lattner
20786460b5 Split SimpleConstantVal up into its components, so each Constant subclass getsa different enum value. This allows 'classof' for these to be really simple,not needing to call getType() anymore. 
This speeds up isa/dyncast/etc for constants, and also makes them smaller.
For example, the text section of a release build of InstCombine.cpp shrinks
from 230037 bytes to 216363 bytes, a 6% reduction.

llvm-svn: 23467
 2005-09-27 06:09:08 +00:00
Chris Lattner
e242673da3 Add support for external calls that we know how to constant fold. This implements 
ctor-list-opt.ll:CTOR8

llvm-svn: 23465
 2005-09-27 05:02:43 +00:00
Chris Lattner
b3b15ed0a3 Fix a bug where we would evaluate stores into linkonce objects which could be 
potentially replaced at link-time.

llvm-svn: 23463
 2005-09-27 04:50:03 +00:00
Chris Lattner
dc94923d86 Implement support for static constructors with calls in them. This is useful 
because gccas runs globalopt before inlining.

This implements ctor-list-opt.ll:CTOR7

llvm-svn: 23462
 2005-09-27 04:45:34 +00:00
Chris Lattner
5bc02b52dd Refactor this code a bit, no functionality changes. 
llvm-svn: 23460
 2005-09-27 04:27:01 +00:00
Chris Lattner
81a267f77f Move the post-lsr simplify cfg pass after lowereh, so it can clean up after 
eh lowering as well.

llvm-svn: 23459
 2005-09-27 00:14:41 +00:00
Chris Lattner
6fd1d34b03 minor pattern shuffling 
llvm-svn: 23458
 2005-09-26 22:20:16 +00:00
Jim Laskey
22a1f0f44b Addition of a simple two pass scheduler. This version is currently hacked up 
for testing and will require target machine info to do a proper scheduling.
The simple scheduler can be turned on using -sched=simple (defaults
to -sched=none)

llvm-svn: 23455
 2005-09-26 21:57:04 +00:00
Chris Lattner
fc4e38bf0a Remove some dead code. ctor evaluation subsumes empty ctor elim 
llvm-svn: 23453
 2005-09-26 20:38:20 +00:00
Chris Lattner
ade39df257 Add support for alloca, implementing ctor-list-opt.ll:CTOR6 
llvm-svn: 23452
 2005-09-26 17:07:09 +00:00
Chris Lattner
c1fe36502e Add a debug printout, fix a crash on kc++ 
llvm-svn: 23450
 2005-09-26 07:34:35 +00:00
Chris Lattner
7283d69b9f Implement loads/stores through GEP's of globals. This implements 
ctor-list-opt.ll:CTOR5.

llvm-svn: 23449
 2005-09-26 06:52:44 +00:00
Chris Lattner
6488c9bbc1 Replace TraverseGEPInitializer with ConstantFoldLoadThroughGEPConstantExpr 
llvm-svn: 23447
 2005-09-26 05:34:07 +00:00
Chris Lattner
7c43a40871 Eliminate GetGEPGlobalInitializer in favor of the more powerful 
ConstantFoldLoadThroughGEPConstantExpr function in the utils lib.

llvm-svn: 23446
 2005-09-26 05:28:52 +00:00
Chris Lattner
6df0a740e8 Factor the GetGEPGlobalInitializer out of this pass and into Transforms/Utils 
as ConstantFoldLoadThroughGEPConstantExpr.

llvm-svn: 23445
 2005-09-26 05:28:06 +00:00
Chris Lattner
d8b3c644e1 Move the ConstantFoldLoadThroughGEPConstantExpr function out of the InstCombine 
pass.

llvm-svn: 23444
 2005-09-26 05:27:10 +00:00
Chris Lattner
e149840f04 add a comment 
llvm-svn: 23442
 2005-09-26 05:16:34 +00:00
Chris Lattner
2addd0dcab Add support for getelementptr, load, and correctly reject volatile stores. 
llvm-svn: 23441
 2005-09-26 05:15:37 +00:00
Chris Lattner
8364e6b0db Add support for br/brcond/switch and phi 
llvm-svn: 23439
 2005-09-26 04:57:38 +00:00
Chris Lattner
1d43adff6d Add a simple interpreter to this code, allowing us to statically evaluate 
global ctors that are simple enough.  This implements ctor-list-opt.ll:CTOR2.

llvm-svn: 23437
 2005-09-26 04:44:35 +00:00
Chris Lattner
9b71d2a0f6 factor some code into a InstallGlobalCtors method, add comments. No functionality change. 
llvm-svn: 23435
 2005-09-26 02:31:18 +00:00
Chris Lattner
fb737b72b1 Make the global opt optimizer work on modules with a null terminator, by 
accepting the null even with a non-65535 init prio

llvm-svn: 23434
 2005-09-26 02:19:27 +00:00
Chris Lattner
ca854922fb Factor this code out into a few methods. 
Implement the start of global ctor optimization.  It is currently smart
enough to remove the global ctor for cases like this:

struct foo {
  foo() {}
} x;

... saving a bit of startup time for the program.

llvm-svn: 23433
 2005-09-26 01:43:45 +00:00
Chris Lattner
d8febfc4aa Fix some logic I broke that caused a regression on 
SimplifyLibCalls/2005-05-20-sprintf-crash.ll

llvm-svn: 23430
 2005-09-25 07:06:48 +00:00
Chris Lattner
e6bfd80169 Move MaskedValueIsZero up. 
Match a bunch of idioms for sign extensions, implementing InstCombine/signext.ll

llvm-svn: 23428
 2005-09-24 23:43:33 +00:00
Chris Lattner
7af8b0777a Simplify this code a bit by relying on recursive simplification. Support 
sprintf("%s", P)'s that have uses.

s/hasNUses(0)/use_empty()/

llvm-svn: 23425
 2005-09-24 22:17:06 +00:00
Chris Lattner
26a6005735 Add support for a marker byte that indicates that we shouldn't add the user 
prefix to a symbol name

llvm-svn: 23421
 2005-09-24 08:24:28 +00:00
Chris Lattner
5704c5bd5e Teach the dag isel generator how to construct arbitrary immediates. The 
generated isel now tries li then lis, then lis+ori.

llvm-svn: 23418
 2005-09-24 00:41:58 +00:00
Chris Lattner
5ce68bab6c remove some debugging code 
llvm-svn: 23411
 2005-09-23 18:49:09 +00:00
Chris Lattner
88c234b5e4 Fold two consequtive branches that share a common destination between them. 
This implements SimplifyCFG/branch-fold.ll, and is useful on ?:/min/max heavy
code

llvm-svn: 23410
 2005-09-23 18:47:20 +00:00
Chris Lattner
67437dce2c simplify some logic further 
llvm-svn: 23408
 2005-09-23 07:23:18 +00:00
Chris Lattner
48df043325 pull a bunch of logic out of SimplifyCFG into a helper fn 
llvm-svn: 23407
 2005-09-23 06:39:30 +00:00
Chris Lattner
574dbee63c speed up Archive::isBytecodeArchive in the case when the archive doesn't have 
an llvm-ranlib symtab.  This speeds up gccld -native on an almost empty .o file
from 1.63s to 0.18s.

llvm-svn: 23406
 2005-09-23 06:22:58 +00:00
Chris Lattner
be817baed9 Turn (X^C1) == C2 into X == C1^C2 iff X&~C1 = 0 (and move a function) 
This happens all the time on PPC for bool values, e.g. eliminating a xori
in inverted-bool-compares.ll.

This should be added to the dag combiner as well.

llvm-svn: 23403
 2005-09-23 00:55:52 +00:00