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Author SHA1 Message Date
Chris Lattner
ee628cfefb Revert my last patch. It too breaks stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26128 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 01:59:10 +00:00
Chris Lattner
82b98a0646 Make these tests fail if opt crashes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26127 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 01:32:58 +00:00
Chris Lattner
d308ddcd67 Fix for my previously reverted patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26126 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 21:24:54 +00:00
Chris Lattner
539c337148 Update comments to be actually accurate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26124 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 09:37:07 +00:00
Chris Lattner
92aa95fc76 This is implemented by the simplify-libcalls pass, not instcombine 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26123 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 09:33:28 +00:00
Chris Lattner
255d8919b6 Port the recent innovations in ComputeMaskedBits to SimplifyDemandedBits. 
This allows us to simplify on conditions where bits are not known, but they
are not demanded either!  This also fixes a couple of bugs in
ComputeMaskedBits that were exposed during this work.

In the future, swaths of instcombine should be removed, as this code
subsumes a bunch of ad-hockery.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26122 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 09:31:47 +00:00
Chris Lattner
5077c7be92 revert my previous change, it exposed other problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26121 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 08:47:47 +00:00
Duraid Madina
b20f97959e fix storing booleans (grawp missed this one) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26120 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 07:33:17 +00:00
Duraid Madina
631a140054 now short immediates will get matched (previously constants were all 
triggering movl 64bit imm fat instructions)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26119 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 07:32:15 +00:00
Chris Lattner
8587eb3a51 Make this check stricter. Disallow loop exit blocks from being shared by 
loops and their subloops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26118 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 02:13:17 +00:00
Evan Cheng
2486af1b53 Prevent certain nodes that have already been selected from being folded into 
X86 addressing mode. Currently we do not allow any node whose target node
produces a chain as well as any node that is at the root of the addressing
mode expression tree.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26117 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 02:05:36 +00:00
Chris Lattner
441365c46e remove dead expr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26116 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 01:43:37 +00:00
Jim Laskey
ce72b1755f Reorg for integration with gcc4. Old style debug info will not be passed though 
to SelIDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26115 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 01:01:30 +00:00
Chris Lattner
c23580969f implement unswitching of loops with switch stmts and selects in them 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26114 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 00:43:37 +00:00
Chris Lattner
e825593bf2 Update PHI nodes in successors of exit blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26113 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 23:26:14 +00:00
Chris Lattner
b2bc315eac Reform the unswitching code in terms of edge splitting, not block splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26112 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 23:16:39 +00:00
Evan Cheng
23addc061c Nicer code. :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26111 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 22:46:26 +00:00
Evan Cheng
f597dc78f8 Added X86 isel debugging stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26110 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 22:24:32 +00:00
Chris Lattner
ebccc040e5 Remove a level of indirection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26109 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 21:32:11 +00:00
Chris Lattner
81be2e961b Fix a case where UnswitchTrivialCondition broke critical edges with 
phi's in the successors


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26108 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 19:08:15 +00:00
Chris Lattner
ad7a3e6208 Use the auto-generated call matcher. Remove a broken impl of the frameaddr/returnaddr 
intrinsics.

Autogen frameindex matcher


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26107 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 07:35:42 +00:00
Chris Lattner
f613fcb741 Update to new-style flags usage, simplifying the .td file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26106 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 06:58:25 +00:00
Evan Cheng
c57e5c17bc Remove a completed entry; add a new entry about fisttp op 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26105 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 05:48:15 +00:00
Chris Lattner
708e1a5c9c add some notes, move some code around. Implement unswitching of loops 
with branches on partially invariant computations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26104 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 02:30:37 +00:00
Chris Lattner
dd3ee6d086 Move code around to be more logical, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26103 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 02:01:22 +00:00
Chris Lattner
4d1ca946ea When unswitching a trivial loop, do admit we are doing it! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26102 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 01:36:35 +00:00
Chris Lattner
4c41d49a92 Implement unconditional unswitching of 'trivial' loops, those loops that contain 
branches in their entry block that control whether or not the loop is a noop or not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26101 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 01:24:09 +00:00
Chris Lattner
f4f5f4e56f Simplify control flow a bit, note that unswitch preserves canonical loop form 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26098 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 22:15:42 +00:00
Evan Cheng
7d82d607c5 Match tblgen change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26096 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 22:12:53 +00:00
Evan Cheng
67212a05e6 Call InsertISelMapEntry rather than map insertion operator to prevent overly 
aggrssive inlining. This reduces Select_store frame size from 24k to 10k.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26095 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 22:12:27 +00:00
Evan Cheng
fae9f1cb34 Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc 
problem where it inline the map insertion call too aggressively. Before this
change it was producing a frame size of 24k for Select_store(), now it's down
to 10k (by calling this method rather than calling the map insertion operator).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26094 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 22:11:03 +00:00
Chris Lattner
e487abbfbf Make the threshold a parameter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26093 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 20:15:48 +00:00
Chris Lattner
f262766619 Done 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26091 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 20:00:19 +00:00
Chris Lattner
3ab48ed72f Enable LSR by default for SPARC: it is a clear win. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26090 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 19:59:55 +00:00
Chris Lattner
2f4b898e8c Simplify the loop-unswitch pass, by not even trying to unswitch loops with 
uses of loop values outside the loop.  We need loop-closed SSA form to do
this right, or to use SSA rewriting if we really care.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26089 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 19:14:52 +00:00
Chris Lattner
9a4cacb7c2 Fix 80-column violations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26088 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:41:14 +00:00
Chris Lattner
68d5ff2b83 Enhance MVIZ in three ways: 
1. Teach it new tricks: in particular how to propagate through signed shr and sexts.
2. Teach it to return a bitset of known-1 and known-0 bits, instead of just zero.
3. Teach instcombine (AND X, C) to fold when we know all C bits of X.

This implements Regression/Transforms/InstCombine/bittest.ll, and allows
future things to be simplified.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26087 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:38:58 +00:00
Chris Lattner
12f7de8222 new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26086 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:38:30 +00:00
Evan Cheng
7e9b26fc73 Match getTargetNode() changes (now return SDNode* instead of SDOperand). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26085 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:17:49 +00:00
Evan Cheng
d7805a741d Match getTargetNode() changes (now returns SDNode* instead of SDOperand). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26084 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:16:09 +00:00
Evan Cheng
6ae46c4c87 More changes to reduce frame size. 
Move all getTargetNode() out of SelectionDAG.h into SelectionDAG.cpp. This
prevents them from being inlined.
Change getTargetNode() so they return SDNode * instead of SDOperand to prevent
copying. It should also help compilation speed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26083 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:15:23 +00:00
Chris Lattner
2d99c81ff0 this apparently passes on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26082 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:12:13 +00:00
Chris Lattner
9413678f91 add an option to turn on LSR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26080 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 05:06:36 +00:00
Chris Lattner
239862ce99 simplify this code now that each constant pool entry is not separately allocated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26079 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:49:59 +00:00
Chris Lattner
3029f92051 Adjust to MachineConstantPool interface change: instead of keeping a 
value/alignment pair for each constant, keep a value/offset pair.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26078 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:46:04 +00:00
Chris Lattner
04a0f60b23 instead of keeping track of Constant/alignment pairs, actually compute the 
offset of each entry from the start of the constant pool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26077 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:44:32 +00:00
Chris Lattner
fa77d43ba1 rename fields of constant pool entries 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26076 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:22:52 +00:00
Chris Lattner
69a9563969 Use a MachineConstantPoolEntry struct instead of a pair to hold 
constant pool entries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26075 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:21:49 +00:00
Chris Lattner
74b7d27ab1 Simplify code, alignment must be specified now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26074 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:26:04 +00:00
Chris Lattner
e7a1e2152c Assert invariants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26073 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:25:42 +00:00