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362 Commits

Author SHA1 Message Date
Andrew Lenharth
1ba3cfd622 it is nice not to chop off bits for those blessed with lots of bits 
llvm-svn: 25766
 2006-01-29 05:22:37 +00:00
Andrew Lenharth
fde505e9f5 make the casts actually cast to the variable type 
llvm-svn: 25765
 2006-01-29 05:17:22 +00:00
Andrew Lenharth
896015b24f start of the 64bit safety cleanup 
llvm-svn: 25764
 2006-01-29 05:07:04 +00:00
Chris Lattner
024ea8e7ca Emit series of conditionals with &&, emitting stuff like this: 
if (N1.getOpcode() == ISD::LOAD &&
        N1.hasOneUse() &&
        !CodeGenMap.count(N1.getValue(0)) &&
        !CodeGenMap.count(N1.getValue(1))) {

instead of this:

    if (N1.getOpcode() == ISD::LOAD) {
      if (N1.hasOneUse()) {
        if (!CodeGenMap.count(N1.getValue(0))) {
          if (!CodeGenMap.count(N1.getValue(1))) {

llvm-svn: 25763
 2006-01-29 04:41:05 +00:00
Chris Lattner
8624868903 Factor matching code that is common between patterns. This works around 
GCC not jump-threading across this common code, and produces far nicer
output.

llvm-svn: 25762
 2006-01-29 04:25:26 +00:00
Chris Lattner
f94049edf9 Split out code generation from analysis from emission 
llvm-svn: 25759
 2006-01-29 02:57:39 +00:00
Chris Lattner
6be3b584f4 move some code around, no change in the generated code 
llvm-svn: 25758
 2006-01-29 02:43:35 +00:00
Chris Lattner
3cdfba635c now that we have control over emission of the code, emit the code using nested 
"if" statements (indenting it appropriately, of course) instead of using goto's.

This inverts the logic for all of the if statements, which makes things simpler
to understand in addition to making the generated code easier to read.

llvm-svn: 25757
 2006-01-28 20:43:52 +00:00
Chris Lattner
b6fc7b5e71 Change PatternCodeEmitter to emit code into a buffer instead of emitting it 
directly to the output file.  This makes things simple because the code doesn't
have to worry about indentation or the case when there is no goto.  It also
allows us to indent the code better without touching everything :)

llvm-svn: 25756
 2006-01-28 20:31:24 +00:00
Chris Lattner
d9026d62f8 Fit to 80 columns, no functionality change 
llvm-svn: 25752
 2006-01-28 19:06:51 +00:00
Jeff Cohen
96bb922537 Teach tablegen to generate code that is VC++ warning-free. 
llvm-svn: 25709
 2006-01-27 22:22:28 +00:00
Evan Cheng
450fcb1d91 (store (op (load ...)), ...) 
If store's chain operand is load, then use load's chain operand instead. If
it isn't (likely a TokenFactor), then do not allow the folding.

llvm-svn: 25708
 2006-01-27 22:13:45 +00:00
Evan Cheng
77885c204d Subtarget feature can now set any variable to any value 
llvm-svn: 25678
 2006-01-27 08:09:42 +00:00
Chris Lattner
df97630390 Use printInlineAsm to, well, print inline asm's. 
llvm-svn: 25677
 2006-01-27 02:10:50 +00:00
Chris Lattner
cc5d4e56f0 PHI and INLINEASM are now builtin instructions provided by Target.td 
llvm-svn: 25673
 2006-01-27 01:45:06 +00:00
Chris Lattner
c3d295a47c If we want to emit things in enum order, use getInstructionsByEnumValue to 
get the order, don't compute it ourselves.

Don't emit stuff like (14<<0), emit 14 instead.

Don't attempt to get target properties for builtin instructions.

llvm-svn: 25672
 2006-01-27 01:44:09 +00:00
Chris Lattner
a932c5aafb There is at least a 'noitinerary' itinerary now 
llvm-svn: 25671
 2006-01-27 01:41:55 +00:00
Chris Lattner
1ec0a10fed Don't emit JIT code for these instructions 
llvm-svn: 25669
 2006-01-27 01:39:38 +00:00
Chris Lattner
0ee2c3b109 Teach the dag selectors to select InlineAsm nodes. 
Aren't we happy the pattern selectors are almost all gone?

llvm-svn: 25666
 2006-01-26 23:08:55 +00:00
Evan Cheng
8b6fb0763c Another folding problem: if a node r/w chain or flag, don't fold it if it 
has already been selected. The number of use check is not strong enough since
a node can be replaced with newly created target node. e.g. If the original
node has two uses, when it is selected for one of the uses it is replaced with
another. Each node now has a single use but isel still should not fold it.

llvm-svn: 25651
 2006-01-26 19:13:45 +00:00
Evan Cheng
37d647c562 Add a FIXME comment. 
llvm-svn: 25635
 2006-01-26 02:13:31 +00:00
Evan Cheng
849d522805 Incoming (and optional) flag bugs. They may be embedded inside a inner node of 
a pattern. Also, nodes which take incoming flag should not be folded if it has
more than one use.

llvm-svn: 25627
 2006-01-26 00:22:25 +00:00
Evan Cheng
dd2ee4821a Fix an optional in flag bug. 
llvm-svn: 25590
 2006-01-24 20:46:50 +00:00
Evan Cheng
1f68845c8c Optional InFlag was not being included in node. 
llvm-svn: 25588
 2006-01-24 20:07:38 +00:00
Evan Cheng
d3713a9b9a Prevent folding of a node with multiple uses if the node already folds a load! 
Here is an example where the load ended up being done twice:

%A = global uint 0

uint %test(uint %B, ubyte %C) {
	%tmp = load uint *%A;
	%X = shl uint %tmp, ubyte %C
	%Cv = sub ubyte 32, %C
	%Y = shr uint %B, ubyte %Cv
	%Z = or uint %Y, %X
	store uint %Z, uint* %A
	ret uint %Z
}

==>

	subl $4, %esp
	movl %ebx, (%esp)
	movl 8(%esp), %edx
	movl A, %eax
	movb 12(%esp), %bl
	movb %bl, %cl
	shldl %cl, %edx, %eax
	movb %bl, %cl
	shldl %cl, %edx, A
	movl (%esp), %ebx
	addl $4, %esp
	ret

llvm-svn: 25471
 2006-01-20 01:11:03 +00:00
Evan Cheng
4a3ee9d5a6 Bug fix. Flag operand number may be calculated incorrectly. 
llvm-svn: 25465
 2006-01-19 21:57:10 +00:00
Evan Cheng
f168c680e5 Use pattern information to determine whether the use expects this 
instruction to produce a result. e.g MUL8m, the instruction does not
produce a explicit result. However it produces an implicit result in
AL which would be copied to a temp. The root operator of the matching
pattern is a mul so the use would expect it to produce a result.

llvm-svn: 25458
 2006-01-19 10:12:58 +00:00
Evan Cheng
49fa8f2cea Prevent unnecessary CopyToReg when the same HW register appears in two spots 
in the pattern.

llvm-svn: 25437
 2006-01-19 01:55:45 +00:00
Chris Lattner
6efb726290 fix a broken comment 
llvm-svn: 25411
 2006-01-17 21:31:18 +00:00
John Criswell
ab12f83120 Regenerated the Lex and Yacc output files on Linux. It seems that our 
Linux machines don't like the source code generated on MacOS X for some
reason.

llvm-svn: 25394
 2006-01-17 17:01:34 +00:00
Evan Cheng
e840301269 Emit a type matching check for ComplexPatterns. 
llvm-svn: 25392
 2006-01-17 07:36:41 +00:00
Evan Cheng
ddc62a9b61 Type inferencing bug 
llvm-svn: 25337
 2006-01-15 10:04:45 +00:00
Evan Cheng
dc7ec6c63e Allow transformation from GlobalAddress to TargetGlobalAddress and 
ExternalSymbol to TargetExternalSymbol.

llvm-svn: 25252
 2006-01-12 19:35:54 +00:00
Evan Cheng
bbe910088d GlobalAddress -> TargetGlobalAddress; ExternalSymbol -> TargetExternalSymbol 
llvm-svn: 25245
 2006-01-12 07:54:57 +00:00
Evan Cheng
5fa1397b29 Some minor fixes. 
llvm-svn: 25227
 2006-01-11 22:16:13 +00:00
Chris Lattner
4e465047c1 Always select target registers to themselves 
llvm-svn: 25218
 2006-01-11 19:52:27 +00:00
Chris Lattner
0343518492 Emit an error instead of an assertion if trying to do bogus things in result patterns. 
llvm-svn: 25194
 2006-01-11 01:33:49 +00:00
Robert Bocchino
9a57550e4e Added support for the extractelement operation. 
llvm-svn: 25181
 2006-01-10 19:05:34 +00:00
Evan Cheng
7b8f8c317e * Remove instruction fields hasInFlag / hasOutFlag and added SNDPInFlag and 
SNDPOutFlag to DAG nodes. These properties do not belong to target specific
instructions.
* Added DAG node property SNDPOptInFlag. It's same as SNDPInFlag except it's
optional. Used by ret / call, etc.

llvm-svn: 25154
 2006-01-09 18:27:06 +00:00
Evan Cheng
353958d60c Pattern complexity calculation fix. 
llvm-svn: 25133
 2006-01-06 22:19:44 +00:00
Evan Cheng
1d376c6eb2 Tweak pattern complexity calc. 
llvm-svn: 25122
 2006-01-06 02:30:23 +00:00
Evan Cheng
c6ad7a02a8 Bug fix wrt chain operand. 
llvm-svn: 25115
 2006-01-06 00:41:12 +00:00
Jeff Cohen
2230844c7b Replace fix with one less disruptive to the original code. 
Also note that GCC 4.1 also correctly flags the syntax error.

llvm-svn: 25076
 2006-01-04 03:23:30 +00:00
Jeff Cohen
8c5173a440 Tblgen was generating syntactically illegal C++ code like: 
SDOperand Tmp0,Tmp1,Tmp2,Tmp3,;

GCC has a bug (24907) in which is fails to catch this, but VC++ correctly
notes its illegality, so tblgen must be taught to only generate legal C++.

llvm-svn: 25075
 2006-01-04 03:15:19 +00:00
Chris Lattner
5a6761490a Remove obsolete comment, make things look a bit nicer 
llvm-svn: 25070
 2006-01-04 00:32:01 +00:00
Chris Lattner
ae035f3604 reduce stack usage of the recursive SelectCode function by out-lining each 
case of the switch statement into its own method.

llvm-svn: 25069
 2006-01-04 00:25:00 +00:00
Chris Lattner
f6418363ba Remove my previous ugly hack that tries to reduce the stack space usage 
of SelectCode to make way for a better solution.

llvm-svn: 25068
 2006-01-03 22:55:16 +00:00
Duraid Madina
d3cf232a4f HP-UX DVDs are crunchy and good to eat 
llvm-svn: 25052
 2005-12-30 16:41:48 +00:00
Duraid Madina
c4a1bfd13d almost got the HP-UX tester up.. :) 
llvm-svn: 25051
 2005-12-30 14:56:37 +00:00
Nate Begeman
ec7c28a28c Add support for generating v4i32 altivec code 
llvm-svn: 25046
 2005-12-30 00:12:56 +00:00