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Author SHA1 Message Date
Chris Lattner
a3f2d4c4f2 Fix Transforms/InstCombine/2006-02-07-SextZextCrash.ll 
llvm-svn: 26040
 2006-02-07 19:07:40 +00:00
Chris Lattner
4a327829c9 new testcase that caused instcombine to crash on 176.gcc last night. 
llvm-svn: 26039
 2006-02-07 19:07:25 +00:00
Evan Cheng
15369d0b89 Darwin ABI issues: weak, linkonce, etc. dynamic-no-pic support is complete. 
Also fixed a function stub bug. Added weak and linkonce support for
x86 Linux.

llvm-svn: 26038
 2006-02-07 08:38:37 +00:00
Evan Cheng
a7d31e53e8 Remind myself to add PIC and static asm printer support. 
llvm-svn: 26037
 2006-02-07 08:35:44 +00:00
Chris Lattner
9a35257363 Generalize MaskedValueIsZero into a ComputeMaskedNonZeroBits function, which 
is just as efficient as MVIZ and is also more general.

Fix a few minor bugs introduced in recent patches

llvm-svn: 26036
 2006-02-07 08:05:22 +00:00
Chris Lattner
c1a185741c Make MaskedValueIsZero take a uint64_t instead of a ConstantIntegral as a 
mask.  This allows the code to be simpler and more efficient.

Also, generalize some of the cases in MVIZ a bit, making it slightly more aggressive.

llvm-svn: 26035
 2006-02-07 07:27:52 +00:00
Chris Lattner
6318e7b7b7 Use Type::getIntegralTypeMask() to simplify some code 
llvm-svn: 26034
 2006-02-07 07:00:41 +00:00
Chris Lattner
a0d7868722 Implement the beginnings of a facility for simplifying expressions based on 
'demanded bits', inspired by Nate's work in the dag combiner.  This isn't
complete, but needs to unrelated instcombiner changes to continue.

llvm-svn: 26033
 2006-02-07 06:56:34 +00:00
Chris Lattner
0c8352628d add a new Type::getIntegralTypeMask() method, which is useful for clients that 
want to do bitwise inspection of integer types.

llvm-svn: 26032
 2006-02-07 06:17:10 +00:00
Jeff Cohen
e66383eb06 The interpreter assumes that the caller of runFunction() must be lli, and 
therefore the function being called must be a main() returning an int.  The
consequences when these assumptions are false are not good, so don't assume
them.

llvm-svn: 26031
 2006-02-07 05:29:44 +00:00
Jeff Cohen
909ee648c7 Teach the interpreter to handle global variables that are added to a module after 
interpretation has begun.  The JIT already handles this situation correctly, and
the interpreter can already handle new functions being added.

llvm-svn: 26030
 2006-02-07 05:11:57 +00:00
Jeff Cohen
e2ef48c356 Fix some truncation warnings. 
llvm-svn: 26029
 2006-02-07 03:34:35 +00:00
Chris Lattner
0c9ddf7346 fix an error compiling with -pedantic 
llvm-svn: 26028
 2006-02-07 01:12:49 +00:00
Chris Lattner
50af3c6eb7 Add the simple PPC integer constraints 
llvm-svn: 26027
 2006-02-07 00:47:13 +00:00
Evan Cheng
0ff5d88abd Hoist all SDOperand declarations within a Select_{opcode}() to the top level 
to reduce stack memory usage. This is intended to work around the gcc bug.

llvm-svn: 26026
 2006-02-07 00:37:41 +00:00
Chris Lattner
da4bd5c64e Eliminate the printCallOperand method, using a 'call' modifier on 
printOperand instead.

llvm-svn: 26025
 2006-02-06 23:41:19 +00:00
Chris Lattner
cf81cdcf95 Add support for modifier strings in machine instr descriptions. This allows 
us to avoid creating lots of "Operand" types with different printers, instead
we can fold several together and use modifiers.  For example, we can now use:

${target:call} to say that the operand should be printed like a 'call' operand.

llvm-svn: 26024
 2006-02-06 23:40:48 +00:00
Chris Lattner
232dd5c069 Simplify the variant handling code, no functionality change. 
llvm-svn: 26023
 2006-02-06 22:43:28 +00:00
Chris Lattner
b6fae6bad7 Change prototype 
llvm-svn: 26022
 2006-02-06 22:18:19 +00:00
Chris Lattner
35a536d1f4 Add support for modifier characters to operand printers 
llvm-svn: 26021
 2006-02-06 22:17:23 +00:00
Chris Lattner
81280678cc Change the prototype of PrintAsmOperand 
llvm-svn: 26020
 2006-02-06 22:16:41 +00:00
Jim Laskey
f36d437b39 Goodbye nasty macro. 
llvm-svn: 26019
 2006-02-06 21:54:05 +00:00
Jim Laskey
0cfdd812d1 Edit requests from Sabre. 
llvm-svn: 26018
 2006-02-06 19:12:02 +00:00
Andrew Lenharth
10a2391def see what this allignment thing will do 
llvm-svn: 26017
 2006-02-06 17:15:17 +00:00
Jim Laskey
e27947e8fb Changing model for the construction of debug information. 
llvm-svn: 26016
 2006-02-06 15:33:21 +00:00
Jim Laskey
62908083eb We seem to have settled to __DWARF for section name. 
llvm-svn: 26015
 2006-02-06 14:16:15 +00:00
Evan Cheng
2af9230f1e At the end of isel, select a replacement node for each handle that does not 
have one. This can happen if a load's real uses are dead (i.e. they do not
have uses themselves).

llvm-svn: 26014
 2006-02-06 08:12:55 +00:00
Evan Cheng
6f1778d4e1 Name change. 
llvm-svn: 26013
 2006-02-06 06:03:35 +00:00
Evan Cheng
080996281c - Update load folding checks to match those auto-generated by tblgen. 
- Manually select SDOperand's returned by TryFoldLoad which make up the
  load address.

llvm-svn: 26012
 2006-02-06 06:02:33 +00:00
Evan Cheng
09b5e544a9 Handle HANDLENODE: just return itself. 
llvm-svn: 26011
 2006-02-05 08:46:14 +00:00
Evan Cheng
9fb67ea859 Complex pattern isel code shouldn't select nodes. 
llvm-svn: 26010
 2006-02-05 08:45:01 +00:00
Chris Lattner
c0012f8818 Fix the Sparc backend with Evan's recent tblgen changes 
llvm-svn: 26009
 2006-02-05 08:35:50 +00:00
Chris Lattner
5a9a874f44 SparcV8 -> Sparc 
llvm-svn: 26008
 2006-02-05 08:30:45 +00:00
Chris Lattner
da908d19fd This xform isn't safe 
llvm-svn: 26007
 2006-02-05 08:26:16 +00:00
Nate Begeman
2fe9dfedf0 Back out previous commit, it isn't safe. 
llvm-svn: 26006
 2006-02-05 08:23:00 +00:00
Nate Begeman
c0e2bb488a fold c1 << (x + c2) into (c1 << c2) << x. fix a warning. 
llvm-svn: 26005
 2006-02-05 08:07:24 +00:00
Chris Lattner
9898b81e27 some stuff is done 
llvm-svn: 26004
 2006-02-05 07:54:37 +00:00
Chris Lattner
807c68d572 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

llvm-svn: 26003
 2006-02-05 07:54:04 +00:00
Chris Lattner
bbd8dc6edd new testcases 
llvm-svn: 26002
 2006-02-05 07:52:47 +00:00
Nate Begeman
c93c3d11d6 Handle urem by shifted powers of 2. 
llvm-svn: 26001
 2006-02-05 07:36:48 +00:00
Nate Begeman
0291708a49 handle combining A / (B << N) into A >>u (log2(B)+N) when B is a power of 2 
llvm-svn: 26000
 2006-02-05 07:20:23 +00:00
Evan Cheng
973e4051d6 Use SelectRoot() as the entry to any tblgen based isel. 
llvm-svn: 25998
 2006-02-05 06:51:51 +00:00
Evan Cheng
fb902782e8 Use SelectRoot() as entry of any tblgen based isel. 
llvm-svn: 25997
 2006-02-05 06:46:41 +00:00
Chris Lattner
42160869d1 Encourage use of the V8 ABI over the V9 ABI. 
llvm-svn: 25996
 2006-02-05 06:44:17 +00:00
Evan Cheng
0b5d4a10a9 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.

llvm-svn: 25995
 2006-02-05 06:43:12 +00:00
Chris Lattner
44b6352988 This document is out of date. :( 
llvm-svn: 25994
 2006-02-05 06:40:12 +00:00
Chris Lattner
fe5f01cca6 V8 -> Sparc 
llvm-svn: 25993
 2006-02-05 06:39:36 +00:00
Chris Lattner
1d15bef6ac Remove the SparcV8 backend. It has been renamed to be the Sparc backend. 
llvm-svn: 25992
 2006-02-05 06:33:29 +00:00
Chris Lattner
1e16099e9f remove V8 reference 
llvm-svn: 25991
 2006-02-05 06:32:59 +00:00
Evan Cheng
d46a7fc65a * Added SDNode::isOnlyUse(). 
* Fix hasNUsesOfValue(), it should be const.

llvm-svn: 25990
 2006-02-05 06:29:23 +00:00