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92 Commits

Author SHA1 Message Date
Devang Patel
a9e9286630 Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40911 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 23:16:03 +00:00
Devang Patel
fee76bd9ba Begin loop index split pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40883 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 00:25:56 +00:00
Owen Anderson
f6a05f949f Rename FastDSE to just DSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40668 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 06:36:51 +00:00
Owen Anderson
1ad2cb7555 Add a GVN pass, using the value numbering code I developed for GVNPRE and the 
load elimination code from RedundantLoadElimination.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40469 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 17:55:58 +00:00
Owen Anderson
a7f98e2919 Rename a lot of things to change FastDLE to RedundantLoadElimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40457 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 00:17:04 +00:00
Owen Anderson
48a19fb884 Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40446 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-23 21:51:37 +00:00
Owen Anderson
ffe40aa97d Add FastDLE, the load-elimination counterpart of FastDSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40445 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-23 21:48:08 +00:00
Devang Patel
b4559a2179 Make LCSSA a loop pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39844 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-13 23:57:11 +00:00
Owen Anderson
b77c457cc8 Add FastDSE, a new algorithm for doing dead store elimination. This algorithm is not as accurate 
as the current DSE, but it only a linear scan over each block, rather than quadratic.  Eventually
(once it has been improved somewhat), this will replace the current DSE.

NOTE: This has not yet been extensively tested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38517 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-11 00:46:18 +00:00
Devang Patel
ff366850aa Expose struct size threhold to allow users to tweak their own setting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38472 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-09 21:19:23 +00:00
Devang Patel
980c4e0466 Rename. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37448 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 00:49:02 +00:00
Devang Patel
743f7e8839 Avoid non-trivial loop unswitching while optimizing for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37446 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 00:21:03 +00:00
Owen Anderson
1f476f4d84 Put GVN-PRE in all the right places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37352 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:36:32 +00:00
Devang Patel
c4625da483 Add loop rotation pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35714 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-07 01:25:15 +00:00
Chris Lattner
dbe0deca33 Split the sdisel code munging stuff out into its own opt-pass, CodeGenPrepare. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35528 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-31 04:06:36 +00:00
Devang Patel
5ee9997906 Now IndVarSimplify is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35003 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 06:39:01 +00:00
Devang Patel
54959d6cf6 Now LICM is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35001 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 04:41:30 +00:00
Devang Patel
3f1a1e0366 Now LoopUnroll is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34996 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 01:38:05 +00:00
Devang Patel
1bc89361c2 Now LoopUnswitch is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34992 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 00:26:10 +00:00
Devang Patel
0f54dcbf07 Now LoopStrengthReduce is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34984 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-06 21:14:09 +00:00
Reid Spencer
9d6565a5b1 For PR1195: 
Rename PackedType -> VectorType, ConstantPacked -> ConstantVector, and
PackedTyID -> VectorTyID. No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34293 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 02:26:10 +00:00
Reid Spencer
7ba98a9000 For PR1072: 
Removing -raise has neglible positive or negative side effects so we are
opting to remove it. See the PR for comparison details.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33844 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-03 23:15:56 +00:00
Devang Patel
4d447f5121 Inherit BasicBlockPass directly from Pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33511 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-25 23:23:25 +00:00
Bill Wendling
1ccc47ec38 Corrected formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30942 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 20:53:50 +00:00
Duraid Madina
2a0013f59f add setJumpBufSize() and setJumpBufAlignment() to target-lowering. 
Call these from your backend to enjoy setjmp/longjmp goodness, see
lib/Target/IA64/IA64ISelLowering.cpp for an example


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30095 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-04 06:21:35 +00:00
Nick Lewycky
05450ae128 Add PredicateSimplifier pass. Collapses equal variables into one form 
and simplifies expressions. This implements the optimization described
in PR807.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29947 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 22:44:55 +00:00
Owen Anderson
a452932171 Update some comments, and expose LCSSAID in preparation for having other passes 
require LCSSA.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28734 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-08 20:02:53 +00:00
Owen Anderson
11f510b577 Skeletal LCSSA pass. This is currently non-functional. Expect functionality 
and documentation updates soo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28495 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-26 13:58:26 +00:00
Chris Lattner
b3674e4753 Add pass ID's for various passes, so they can be AddRequiredID. Patch by 
Domagoj Babic!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28048 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-02 04:24:36 +00:00
Chris Lattner
73173e72d6 remove a dead prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27882 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-04-20 15:45:54 +00:00
Evan Cheng
d1d6b5cce2 For each loop, keep track of all the IV expressions inserted indexed by 
stride. For a set of uses of the IV of a stride which is a multiple
of another stride, do not insert a new IV expression. Rather, reuse the
previous IV and rewrite the uses as uses of IV expression multiplied by
the factor.

e.g.
x = 0 ...; x ++
y = 0 ...; y += 4
then use of y can be rewritten as use of 4*x for x86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26803 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-03-16 21:53:05 +00:00
Evan Cheng
d277f2c669 Added target lowering hooks which LSR consults to make more intelligent 
transformation decisions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26738 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-03-13 23:14:23 +00:00
Andrew Lenharth
7c0c567058 Reg2Mem is something a pass may depend on, so allow that 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24488 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-22 22:14:23 +00:00
Andrew Lenharth
183119cdf6 The pass everyone has been waiting for! 
Reg2Mem

for fun you can opt -reg2mem -mem2reg


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24267 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-10 01:58:38 +00:00
Nate Begeman
14b0529532 Add support alignment of allocation instructions. 
Add support for specifying alignment and size of setjmp jmpbufs.

No targets currently do anything with this information, nor is it presrved
in the bytecode representation.  That's coming up next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24196 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-05 09:21:28 +00:00
Chris Lattner
3aa4e15331 Remove the LowerConstantExpressionsPass pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24089 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-29 05:32:20 +00:00
Misha Brukman
34695381d6 Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21412 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 20:59:05 +00:00
Chris Lattner
73459d097b add a new prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21305 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-15 19:24:49 +00:00
Alkis Evlogimenos
ab7ada3ed6 Rename createPromoteMemoryToRegister() to 
createPromoteMemoryToRegisterPass() to be consistent with other pass
creation functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20885 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-28 02:01:12 +00:00
Jeff Cohen
2f3c9b7562 Add support for not strength reducing GEPs where the element size is a small 
power of two.  This emphatically includes the zeroeth power of two.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20429 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-04 04:04:26 +00:00
Chris Lattner
7dd732bf80 Add an argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20413 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-03 01:03:10 +00:00
Jeff Cohen
bf65268def Add more missing createXxxPass functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19370 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 17:21:40 +00:00
Chris Lattner
92f6c15d8f Move the strip pass from Scalar to IPO lib 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18438 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-02 21:24:19 +00:00
Chris Lattner
4c4c415fca New prototype for lowerpacked pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17915 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-17 18:01:49 +00:00
Chris Lattner
8226db66a2 This is V9 specific stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17546 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-07 00:42:29 +00:00
Nate Begeman
eaa13851a7 Initial implementation of the strength reduction for GEP instructions in 
loops.  This optimization is not turned on by default yet, but may be run
with the opt tool's -loop-reduce flag.  There are many FIXMEs listed in the
code that will make it far more applicable to a wide range of code, but you
have to start somewhere :)

This limited version currently triggers on the following tests in the
MultiSource directory:
pcompress2: 7 times
cfrac: 5 times
anagram: 2 times
ks: 6 times
yacr2: 2 times


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17134 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-18 21:08:22 +00:00
Chris Lattner
8e47e7292c Do not prototype any of these passes as returning Pass*. Instead, be specific 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16431 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-20 04:41:39 +00:00
Chris Lattner
264532cd31 Remove unused pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16338 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-14 16:34:08 +00:00
Chris Lattner
f1fccfd6a8 Expose breakcriticaledges as a functionpass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15370 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 10:02:24 +00:00
Brian Gaeke
96d4bf7aee Make the create...() functions for some of these passes return a FunctionPass *. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15276 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:43:21 +00:00