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Author SHA1 Message Date
Nate Begeman
bab9239d05 fold c1 << (x + c2) into (c1 << c2) << x. fix a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26005 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 08:07:24 +00:00
Chris Lattner
176f0416d1 some stuff is done 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26004 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 07:54:37 +00:00
Chris Lattner
5f3b0eeddb Turn A % (C << N), where C is 2^k, into A & ((C << N)-1) [urem only]. 
Turn A / (C1 << N), where C1 is "1<<C2" into A >> (N+C2) [udiv only].

Tested with: rem.ll:test5, div.ll:test10


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26003 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 07:54:04 +00:00
Chris Lattner
fee906b482 new testcases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26002 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 07:52:47 +00:00
Nate Begeman
c031e33b68 Handle urem by shifted powers of 2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26001 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 07:36:48 +00:00
Nate Begeman
fb5e4bdded handle combining A / (B << N) into A >>u (log2(B)+N) when B is a power of 2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26000 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 07:20:23 +00:00
Evan Cheng
900c826bc7 Use SelectRoot() as the entry to any tblgen based isel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25998 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:51:51 +00:00
Evan Cheng
ba2f0a9ee5 Use SelectRoot() as entry of any tblgen based isel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25997 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:46:41 +00:00
Chris Lattner
23c5b3c5ce Encourage use of the V8 ABI over the V9 ABI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25996 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:44:17 +00:00
Evan Cheng
e41bf82107 Allow more loads to be folded which were previously prevented from happening 
due to ordering issue. i.e. they were selected for chain use first.
Now at load select time, check if it is being selected for a chain use and if
it has only a single real use. If so, return a HANDLENODE (with the load as
its operand) in its place and record it.
When it is folded or the load is selected for a real use, the isel records it
as the replacement for the HANDLENODE. The replacement is done when all nodes
are selected.
This scheme exposed a couple of problems where cycles can happen. (See comments
in EmitMatchCode() for descriptions of the problems and their workaround /
solutions.) These problems have been resolved with a small compile time
penality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25995 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:43:12 +00:00
Chris Lattner
029e844994 This document is out of date. :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25994 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:40:12 +00:00
Chris Lattner
58504a6aa0 V8 -> Sparc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25993 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:39:36 +00:00
Chris Lattner
c6aaf5acf9 Remove the SparcV8 backend. It has been renamed to be the Sparc backend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25992 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:33:29 +00:00
Chris Lattner
e7c839ed5a remove V8 reference 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25991 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:32:59 +00:00
Evan Cheng
4ee6211258 * Added SDNode::isOnlyUse(). 
* Fix hasNUsesOfValue(), it should be const.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25990 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:29:23 +00:00
Chris Lattner
35409221bc SparcV8 -> Sparc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25989 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 06:26:43 +00:00
Chris Lattner
762236c04f SparcV8 -> Sparc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25988 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:56:51 +00:00
Chris Lattner
e1070166e7 These were moved to ../SPARC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25987 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:53:48 +00:00
Chris Lattner
7ce1bbf05d move V8 testcases here 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25986 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:52:55 +00:00
Chris Lattner
7c90f73a1b Rename SPARC V8 target to be the LLVM SPARC target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25985 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:50:24 +00:00
Chris Lattner
213845367c add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25984 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:27:35 +00:00
Evan Cheng
7dd281b3e5 Re-commit the last bit of change that was backed out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25983 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:25:07 +00:00
Evan Cheng
2216d8ad2f Re-committing the last bit of change. It shouldn't break PPC this time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25982 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 05:22:18 +00:00
Chris Lattner
519ea2abc9 make sure that global doubles are aligned to 8 bytes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25981 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 01:46:49 +00:00
Chris Lattner
ff805b50f8 Use getPreferredAlignmentLog. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25980 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 01:45:04 +00:00
Chris Lattner
7d8d5a522f Use the asmprinter to find out what the preferred alignment of a global is. 
This patch speeds up 172.mgrid from 31.81s to 11.39s on darwin/ppc.
Many many thanks to Nate for tracking down the root cause of the issue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25979 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 01:30:45 +00:00
Chris Lattner
4d57e0cd69 Implement the AsmPrinter::getPreferredAlignmentLog method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25978 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 01:29:18 +00:00
Chris Lattner
28adf292d9 add a new method, getPreferredAlignmentLog. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25977 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 01:24:06 +00:00
Andrew Lenharth
fd89543e7d linkage fix for weak functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25976 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 19:13:09 +00:00
Jeff Cohen
f3afef3b3a Fix VC++ warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25975 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 16:20:31 +00:00
Chris Lattner
0a70f219f4 Use SCEVExpander::InsertCastOfTo instead of our own code. This reduces 
#LLVM LOC, and auto-cse's cast instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25974 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 09:52:43 +00:00
Chris Lattner
ca1a4bebb3 Pull the InsertCastOfTo out of the header, implement CSE'ing of arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25973 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 09:51:53 +00:00
Chris Lattner
ed412ac2cb Refactor a bunch of code into a non-inlined method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25972 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 09:51:33 +00:00
Chris Lattner
b46ef67679 Temporarily revert this patch, which probably breaks with the 
tblgen patch reverted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25971 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 09:24:16 +00:00
Chris Lattner
9ed44818c5 Temporarily revert the last change, which breaks PPC and other targets that 
DO select things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25970 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 09:23:06 +00:00
Chris Lattner
03f774ad80 Value# select instructions, allowing -gcse to remove duplicates 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25969 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 09:15:29 +00:00
Evan Cheng
9c4815a036 Complex pattern's custom matcher should not call Select() on any operands. 
Select them afterwards if it returns true.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25968 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 08:50:49 +00:00
Chris Lattner
c275dfa727 Custom lower VAARG for the case when we are doing vaarg(double). In this 
case, the double being loaded may not be 8-byte aligned, so we have to use
our standard bit_convert game.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25967 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 08:31:30 +00:00
Chris Lattner
c4b612ba2a Fix a nasty typo that broke functions with big stack frames. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25966 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 08:04:21 +00:00
Chris Lattner
329a515fe7 fix a bug in my last checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25965 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 07:48:46 +00:00
Chris Lattner
221fc3c6d6 Fix two significant bugs in LSR: 
1. When rewriting code in outer loops, sometimes we would insert code into
   inner loops that is invariant in that loop.
2. Notice that 4*(2+x) is 8+4*x and use that to simplify expressions.

This is a performance neutral change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25964 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 07:36:50 +00:00
Nate Begeman
a6973c348b Remove some stuff that now works 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25963 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 07:29:35 +00:00
Chris Lattner
0d913eaaed add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25962 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 07:07:31 +00:00
Chris Lattner
69d39091fe Two changes: 
1. Treat FMOVD as a copy instruction, to help with coallescing in V9 mode
2. When in V9 mode, insert FMOVD instead of FpMOVD instructions, as we don't
   ever rewrite FpMOVD instructions into FMOVS instructions, thus we just end
   up with commented out copies!
This should fix a bunch of failures in V9 mode on sparc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25961 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 06:58:46 +00:00
Evan Cheng
cccf1232a6 Get rid of some memory leaks identified by Valgrind 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25960 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 06:49:00 +00:00
Chris Lattner
8f9f0d3a34 add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25959 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 05:49:01 +00:00
Chris Lattner
fdcc71eaa8 Let bugpoint work on sparc with v9 instructions enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25958 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 05:02:27 +00:00
Jeff Cohen
003cecbc9d Fix VC++ warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25957 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 03:27:39 +00:00
Jeff Cohen
8e3be85c1e Keep Visual Studio informed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25956 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 03:27:04 +00:00
Chris Lattner
dc19b70d24 Add initial support for immediates. This allows us to compile this: 
int %rlwnm(int %A, int %B) {
  %C = call int asm "rlwnm $0, $1, $2, $3, $4", "=r,r,r,n,n"(int %A, int %B, int 4, int 17)
  ret int %C
}

into:

_rlwnm:
        or r2, r3, r3
        or r3, r4, r4
        rlwnm r2, r2, r3, 4, 17    ;; note the immediates :)
        or r3, r2, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25955 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-04 02:26:14 +00:00