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Author SHA1 Message Date
Andrew Lenharth
55db991b47 Reduce the amount of state in the lowering code and drop old pattern ISel functions 
llvm-svn: 30881
 2006-10-11 16:24:51 +00:00
Jim Laskey
fd6218f8f5 Fix regression in combiner alias analysis. 
llvm-svn: 30880
 2006-10-11 13:47:09 +00:00
Jim Laskey
0d8d0db0f3 Make sure combiner alias analysis does it's thing. 
llvm-svn: 30879
 2006-10-11 13:42:49 +00:00
Evan Cheng
9b31a4d4ed Naming consistency. 
llvm-svn: 30878
 2006-10-11 07:10:22 +00:00
Evan Cheng
9491e25341 Test case for the recently fixed FindModifiedNodeSlot bug. 
llvm-svn: 30877
 2006-10-11 07:01:37 +00:00
Bill Wendling
692ac6b337 Put code example inside of "doc_code" divisions. 
llvm-svn: 30876
 2006-10-11 06:30:10 +00:00
Chris Lattner
b9c1ea6dcc Use cute tblgen tricks to make zap handling more powerful. Specifically, 
when the dag combiner simplifies an and mask, notice this and allow those bits
to be missing from the zap mask.

This compiles Alpha/zapnot4.ll into:

        sll $16,3,$0
        zapnot $0,3,$0
        ret $31,($26),1

instead of:

        ldah $0,1($31)
        lda $0,-8($0)
        sll $16,3,$1
        and $1,$0,$0
        ret $31,($26),1

It would be *really* nice to replace the hunk of code in the
AlphaISelDAGToDAG.cpp file that matches (and (srl (x, C), c2) into
(SRL (ZAPNOTi)) with a similar pattern, but I've spent enough time poking
at alpha.  Make andrew will do this.

llvm-svn: 30875
 2006-10-11 05:13:56 +00:00
Chris Lattner
427004614b new testcase, this should turn into zap 
llvm-svn: 30874
 2006-10-11 05:10:19 +00:00
Andrew Lenharth
4b783303e5 Jimptables working again on alpha. 
As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.

llvm-svn: 30873
 2006-10-11 04:29:42 +00:00
Chris Lattner
95a8905db2 Remove dead/redundant instructions. These are handled by ZAPNOTi 
llvm-svn: 30872
 2006-10-11 04:12:39 +00:00
Chris Lattner
822d1b259e Special case tblgen generated code for patterns like (and X, 255) or (or X, 42). 
The dag/inst combiners often 'simplify' the masked value based on whether
or not the bits are live or known zero/one.  This is good and dandy, but
often causes special case patterns to fail, such as alpha's CMPBGE pattern,
which looks like "(set GPRC:$RC, (setuge (and GPRC:$RA, 255), (and GPRC:$RB, 255)))".
Here the pattern for (and X, 255) should match actual dags like (and X, 254) if
the dag combiner proved that the missing bits are already zero (one for 'or').

For CodeGen/Alpha/cmpbge.ll:test2 for example, this results in:

        sll $16,1,$0
        cmpbge $0,$17,$0
        ret $31,($26),1

instead of:

        sll $16,1,$0
        and $0,254,$0
        and $17,255,$1
        cmpule $1,$0,$0
        ret $31,($26),1

... and requires no target-specific code.

llvm-svn: 30871
 2006-10-11 04:05:55 +00:00
Chris Lattner
e7dfa73a22 Both of these functions should turn into cmpbge instructions, even though 
the second has an and of 254 not 255.

llvm-svn: 30870
 2006-10-11 03:59:48 +00:00
Chris Lattner
aa1741fc87 add two helper methods. 
llvm-svn: 30869
 2006-10-11 03:58:02 +00:00
Chris Lattner
ad597308ad Split some code out into a new method. The generated code is exactly 
identical, this is just a refactoring.

llvm-svn: 30868
 2006-10-11 03:35:34 +00:00
Andrew Lenharth
7a79f1df15 This entry is done. switched to the gcc way of doing things. 
llvm-svn: 30867
 2006-10-11 01:48:03 +00:00
Evan Cheng
d6b419ecb0 FindModifiedNodeSlot needs to add LoadSDNode ivars to create proper SelectionDAGCSEMap ID. 
llvm-svn: 30866
 2006-10-11 01:47:58 +00:00
Chris Lattner
05d6841bae new testcase for zap generation, from the alpha readme 
llvm-svn: 30865
 2006-10-11 01:47:08 +00:00
Chris Lattner
4be8276d27 This has apparently been fixed 
llvm-svn: 30864
 2006-10-11 01:44:46 +00:00
Chris Lattner
325671d406 Make the bugpoint reduction heuristics more effective. Patch submitted by 
Domagoj Babic, thanks!

llvm-svn: 30863
 2006-10-10 21:42:25 +00:00
Rafael Espindola
46e7aceb1d uint <-> double conversion 
llvm-svn: 30862
 2006-10-10 20:38:57 +00:00
Evan Cheng
0d8a340a8f Also update getNodeLabel for LoadSDNode. 
llvm-svn: 30861
 2006-10-10 20:11:26 +00:00
Evan Cheng
a12747d2b4 SDNode::dump should also print out extension type and VT. 
llvm-svn: 30860
 2006-10-10 20:05:10 +00:00
Rafael Espindola
0112351e9a add fp sub 
llvm-svn: 30859
 2006-10-10 19:35:01 +00:00
Rafael Espindola
27d68a3c22 add double <-> int conversion 
llvm-svn: 30858
 2006-10-10 18:55:14 +00:00
Chris Lattner
e0734f522f Fix another bug in extload promotion. 
llvm-svn: 30857
 2006-10-10 18:54:19 +00:00
Rafael Espindola
413aa20bc8 compare doubles 
llvm-svn: 30856
 2006-10-10 16:33:47 +00:00
Rafael Espindola
4ea6435132 add some tests for floating point compare 
llvm-svn: 30855
 2006-10-10 14:26:06 +00:00
Rafael Espindola
b0719f1374 initial support for fp compares. Unordered compares not implemented yet 
llvm-svn: 30854
 2006-10-10 12:56:00 +00:00
Evan Cheng
070ae65fa8 Fix a bug introduced by my LOAD/LOADX changes. 
llvm-svn: 30853
 2006-10-10 07:51:21 +00:00
Evan Cheng
2fc9d4f580 Add test case from PR940. 
llvm-svn: 30852
 2006-10-10 04:33:46 +00:00
Evan Cheng
b2998e15f2 More isel time load folding checking for nodes that produce flag values. 
See comment in CanBeFoldedBy() for detailed explanation.

llvm-svn: 30851
 2006-10-10 01:46:56 +00:00
Evan Cheng
8090a67f40 Comments; getChain(), getBasePtr(), etc. should return a SDOperand by value. 
llvm-svn: 30850
 2006-10-10 01:44:58 +00:00
Evan Cheng
ddd78757d1 shufps with load folding is better than movaps; movsd. 
llvm-svn: 30849
 2006-10-09 22:42:31 +00:00
Evan Cheng
d1a37cb9dc Don't go too crazy with these AddComplexity. Try matching shufps with load 
folding first.

llvm-svn: 30848
 2006-10-09 21:42:15 +00:00
Evan Cheng
8f6c6b19e6 Don't convert to MOVLP if using shufps etc. may allow load folding. 
llvm-svn: 30847
 2006-10-09 21:39:25 +00:00
Devang Patel
850e8d4fef Use FindProgramByName instead of FindExecutable. 
llvm-svn: 30846
 2006-10-09 21:16:05 +00:00
Evan Cheng
084d415941 Predicate function on the node should be matched before its childrean' matching 
code. This is especially important now matching ISD::LOAD also requires a
Predicate_Load call.

llvm-svn: 30845
 2006-10-09 21:02:17 +00:00
Evan Cheng
d22f3dd3ed Reflects ISD::LOAD / ISD::LOADX / LoadSDNode changes. 
llvm-svn: 30844
 2006-10-09 20:57:25 +00:00
Evan Cheng
967d6af1d2 Merging ISD::LOAD and ISD::LOADX. Added LoadSDNode to represent load nodes. 
Chain and address ptr remains as operands. SrcValue, extending mode, extending
VT (or rather loaded VT before extension) are now instance variables of
LoadSDNode.

Introduce load / store addressing modes to represent pre- and post-indexed
load and store. Also added an additional operand offset that is only used in
post-indexed mode (i.e. base ptr += offset after load/store).

Added alignment info (not yet used) and isVolatile fields.

llvm-svn: 30843
 2006-10-09 20:55:20 +00:00
Devang Patel
94499cd79f Do error checking. 
llvm-svn: 30842
 2006-10-09 20:20:13 +00:00
Chris Lattner
2fb91841be Remove a dead var noticed by Yorion 
llvm-svn: 30841
 2006-10-09 20:12:37 +00:00
Rafael Espindola
0e13b176ed add some tests for floating point arithmetic 
llvm-svn: 30840
 2006-10-09 19:15:17 +00:00
Andrew Lenharth
6223a6ce63 Fix build error in gcc 3.4 and make more this general 
llvm-svn: 30839
 2006-10-09 19:05:44 +00:00
Devang Patel
51ec4965d5 Use GetTemporaryDirectory. Fix http://llvm.org/bugs/show_bug.cgi?id=894 
llvm-svn: 30838
 2006-10-09 19:04:51 +00:00
Nick Lewycky
3c69e2291b Fix usage example. 
llvm-svn: 30837
 2006-10-09 18:33:08 +00:00
Rafael Espindola
bae07b25d6 add float -> double and double -> float conversion 
llvm-svn: 30835
 2006-10-09 17:50:29 +00:00
Reid Spencer
2e9ba7166f Fix PR886: 
The result of yyparse() was not being checked. When YYERROR or YYABORT is
called it causes yyparse() to return 1 to indicate the error. The code was
silently ignoring this situation because it previously expected either an
exception or a null ParserResult to indicate an error. The patch corrects
this situation.

llvm-svn: 30834
 2006-10-09 17:36:59 +00:00
Chris Lattner
15afec7495 xfail this until andrew has a chance to implement the alpha TM method. 
llvm-svn: 30833
 2006-10-09 17:34:40 +00:00
Rafael Espindola
6abf128f64 add a test for adds adcs 
llvm-svn: 30832
 2006-10-09 17:30:15 +00:00
Chris Lattner
0c057ef048 Fix a bug pointed out by Zhongxing Xu 
llvm-svn: 30831
 2006-10-09 17:28:13 +00:00