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Author SHA1 Message Date
Chris Lattner
86a339dc34 add support for an associative marker 
llvm-svn: 23502
 2005-09-28 20:58:06 +00:00
Chris Lattner
0231f57a46 Emit an error if instructions or patterns are defined but can never match. 
Currently we check that immediate values live on the RHS of commutative
operators.  Defining ORI like this, for example:

def ORI   : DForm_4<24, (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "ori $dst, $src1, $src2",
                    [(set GPRC:$dst, (or immZExt16:$src2, GPRC:$src1))]>;

results in:

tblgen: In ORI: Instruction can never match: Immediate values must be on the RHS of commutative operators!
llvm-svn: 23501
 2005-09-28 19:27:25 +00:00
Chris Lattner
2c54044630 Nate pointed out that mulh[us] are commutative as well. Thanks! 
llvm-svn: 23500
 2005-09-28 19:01:44 +00:00
Chris Lattner
18ccb532b5 collect commutativity information 
llvm-svn: 23499
 2005-09-28 18:28:29 +00:00
Chris Lattner
f9cb3cd512 expose commutativity information 
llvm-svn: 23498
 2005-09-28 18:27:58 +00:00
Chris Lattner
64a7b30379 All (xor *) cases are autogenerated now 
llvm-svn: 23497
 2005-09-28 18:12:37 +00:00
Chris Lattner
90179cf384 add support for missed eqv tests 
llvm-svn: 23496
 2005-09-28 18:10:51 +00:00
Chris Lattner
eb8d9090c3 add testcase for nand 
llvm-svn: 23495
 2005-09-28 18:08:58 +00:00
Chris Lattner
82eb231e2f Implement PowerPC/eqv-andc-orc-nor.ll:EQV3 
llvm-svn: 23494
 2005-09-28 18:04:52 +00:00
Chris Lattner
816f712c69 Consolidate the eqv.ll and nor.ll files together. 
Add a missed eqv case.

llvm-svn: 23493
 2005-09-28 18:04:22 +00:00
Chris Lattner
5dae8ab260 Prefer cheaper patterns to more expensive ones. Print the costs to the generated 
file

llvm-svn: 23492
 2005-09-28 17:57:56 +00:00
Chris Lattner
26c05140ee simple tests for nor generation 
llvm-svn: 23491
 2005-09-28 17:55:10 +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
eeead91a84 Select Constant nodes to TargetConstant nodes 
llvm-svn: 23488
 2005-09-28 16:58:06 +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
14ade87e75 Testcase for PR632 
llvm-svn: 23483
 2005-09-27 22:27:19 +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
62922d5727 Add a new flag for targets where setjmp/longjmp saves/restores the signal mask, 
and _setjmp/_longjmp should be used instead (for llvm.setjmp/llvm.longjmp).

llvm-svn: 23479
 2005-09-27 22:13:36 +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
379b92a59d new testcase the CBE creates invalid C code for 
llvm-svn: 23474
 2005-09-27 20:52:30 +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
dbef366ea5 allow demotion to volatile values 
llvm-svn: 23472
 2005-09-27 19:38:43 +00:00
Chris Lattner
521f09d4c5 Add a simple testcase for lowerinvoke 
llvm-svn: 23471
 2005-09-27 18:34:31 +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
96f29dbdbe Make this slightly more efficient by pushing actual type information down 
into the evaluator.  This shrinks a release build of instcombine's text
section from 216363 to 215975 bytes (on PPC).

llvm-svn: 23468
 2005-09-27 06:38:05 +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
92616caa1a Split SimpleConstantVal up into its components, so each Constant subclass gets 
a 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: 23466
 2005-09-27 06:08:32 +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
94798a7441 add a new testcase for constant foldable calls 
llvm-svn: 23464
 2005-09-27 05:02:03 +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
f7576c59ae Add a more difficult testcase which uses a call to a helper function to do 
the initialization

llvm-svn: 23461
 2005-09-27 04:44:04 +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
Chris Lattner
cdeed56e4e memoize the assert results 
llvm-svn: 23457
 2005-09-26 22:10:24 +00:00
Chris Lattner
5c061685a2 Emit the switch stmt cases in alphabetical order instead of pointer order, 
which is not stable.

llvm-svn: 23456
 2005-09-26 21:59:35 +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
ad79bd3f47 implement a fixme: only select values once, even if used multiple times. 
llvm-svn: 23454
 2005-09-26 21:53:26 +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