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1831 Commits

Author SHA1 Message Date
Chris Lattner
8cfd7fbf35 stop using method. 
llvm-svn: 20603
 2005-03-15 05:19:49 +00:00
Chris Lattner
4b688a1c70 This mega patch converts us from using Function::a{iterator|begin|end} to 
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597
 2005-03-15 04:54:21 +00:00
Chris Lattner
6d6f980ca7 fix a bug where we thought arguments were constants :( 
llvm-svn: 20506
 2005-03-06 22:52:29 +00:00
Chris Lattner
2174b70c68 Fix Regression/Transforms/LoopStrengthReduce/dont_insert_redundant_ops.ll, 
hopefully not breaking too many other things.

llvm-svn: 20505
 2005-03-06 22:36:12 +00:00
Chris Lattner
a29e319d54 implement Transforms/LoopStrengthReduce/invariant_value_first_arg.ll 
llvm-svn: 20501
 2005-03-06 22:06:22 +00:00
Chris Lattner
18fdd1e9f6 minor simplifications of the code. 
llvm-svn: 20497
 2005-03-06 21:58:22 +00:00
Chris Lattner
53c34a2147 trivial simplification 
llvm-svn: 20494
 2005-03-06 21:35:38 +00:00
Chris Lattner
b4e635cfc4 Fix a bug where we could corrupt a parent loop's header info if we unrolled 
a nested loop.  This fixes Transforms/LoopUnroll/2005-03-06-BadLoopInfoUpdate.ll
and PR532

llvm-svn: 20493
 2005-03-06 20:57:32 +00:00
Chris Lattner
0ed850a944 Make this MUCH faster by avoiding a linear search in the symbol table code. 
llvm-svn: 20479
 2005-03-06 05:42:36 +00:00
Jeff Cohen
db51926d4a Reformat comments to fix 80 columns. 
llvm-svn: 20467
 2005-03-05 22:45:40 +00:00
Jeff Cohen
023f10be12 Reuse induction variables created for strength-reduced GEPs by other similar GEPs. 
llvm-svn: 20466
 2005-03-05 22:40:34 +00:00
Chris Lattner
1ccff5c8c7 second argument to Value::setName is now gone. 
llvm-svn: 20463
 2005-03-05 19:05:20 +00:00
Chris Lattner
cadc85daa5 Do not compute 1ULL << 64, which is undefined. This fixes Ptrdist/ks on the 
sparc, and testcase Regression/Transforms/InstCombine/2005-03-04-ShiftOverflow.ll

llvm-svn: 20445
 2005-03-04 23:21:33 +00:00
Jeff Cohen
29ecafb2e3 Add support for not strength reducing GEPs where the element size is a small 
power of two.  This emphatically includes the zeroeth power of two.

llvm-svn: 20429
 2005-03-04 04:04:26 +00:00
Chris Lattner
4814696e7d Add an optional argument to lower to a specific constant value instead of 
to a "sizeof" expression.

llvm-svn: 20414
 2005-03-03 01:03:43 +00:00
Jeff Cohen
6d82d5b23e Fixed the following LSR bugs: 
* Loop invariant code does not dominate the loop header, but rather
    the end of the loop preheader.

  * The base for a reduced GEP isn't a constant unless all of its
    operands (preceding the induction variable) are constant.

  * Allow induction variable elimination for the simple case after all.

Also made changes recommended by Chris for properly deleting
instructions.

llvm-svn: 20383
 2005-03-01 03:46:11 +00:00
Jeff Cohen
d5b1827c3f Fix crash in LSR due to attempt to remove original induction variable. However, 
for reasons explained in the comments, I also deactivated this code as it needs
more thought.

llvm-svn: 20367
 2005-02-28 00:08:56 +00:00
Jeff Cohen
fd9504c7d9 PHI nodes were incorrectly placed when more than one GEP is reduced in a loop. 
llvm-svn: 20360
 2005-02-27 21:08:04 +00:00
Jeff Cohen
6258d4a431 First pass at improved Loop Strength Reduction. Still not yet ready for prime time. 
llvm-svn: 20358
 2005-02-27 19:37:07 +00:00
Chris Lattner
73d4556bb6 Teach globalopt how memset/cpy/move affect memory, to allow better optimization. 
llvm-svn: 20352
 2005-02-27 18:58:52 +00:00
Chris Lattner
a024984017 Fix spelling, patch contributed by Gabor Greif! 
llvm-svn: 20343
 2005-02-27 06:18:25 +00:00
Chris Lattner
14f720d625 remove extraneous cast 
llvm-svn: 20334
 2005-02-26 18:33:28 +00:00
Chris Lattner
7a434679c3 Implement Transforms/SimplifyCFG/switch_thread.ll 
This does a simple form of "jump threading", which eliminates CFG edges that
are provably dead.  This triggers 90 times in the external tests, and
eliminating CFG edges is always always a good thing! :)

llvm-svn: 20300
 2005-02-24 06:17:52 +00:00
Chris Lattner
bfb6a94126 make this more efficient. Scan up to 16 nodes, not the whole list. 
llvm-svn: 20289
 2005-02-23 16:53:04 +00:00
Chris Lattner
b5256c157d Remove use of bind_obj 
llvm-svn: 20276
 2005-02-22 23:22:58 +00:00
Chris Lattner
29126b65c4 Do not mark obviously unreachable blocks live when processing PHI nodes, 
and handle incomplete control dependences correctly.  This fixes:

Regression/Transforms/ADCE/dead-phi-edge.ll
  -> a missed optimization

Regression/Transforms/ADCE/dead-phi-edge.ll
  -> a compiler crash distilled from QT4

llvm-svn: 20227
 2005-02-17 19:28:49 +00:00
Chris Lattner
0a61115d67 Fix the second bug attached to PR504. 
llvm-svn: 20181
 2005-02-14 20:11:45 +00:00
Chris Lattner
8f3f72f2bc Fix for testcase Transforms/IndVarsSimplify/2005-02-11-InvokeCrash.ll 
and PR504.

llvm-svn: 20129
 2005-02-12 03:26:49 +00:00
Alkis Evlogimenos
82f384712f Localize globals if they are only used in main(). This replaces the 
global with an alloca, which eventually gets promoted into a
register. This enables a lot of other optimizations later on.

llvm-svn: 20109
 2005-02-10 18:36:30 +00:00
Alkis Evlogimenos
3521fcb18f Fix crash on MallocInsts of unsized types. 
llvm-svn: 19988
 2005-02-02 04:43:37 +00:00
Chris Lattner
d04865822c API change. 
llvm-svn: 19959
 2005-02-01 01:23:49 +00:00
Chris Lattner
555ef32a44 Adjust to changes in APIs 
llvm-svn: 19958
 2005-02-01 01:23:31 +00:00
Chris Lattner
849a4118e6 Hacks to make this ugly ugly code work with the new use lists. 
llvm-svn: 19957
 2005-02-01 01:22:56 +00:00
Chris Lattner
c4884b553e Implement InstCombine/cast.ll:test25, a case that occurs many times 
in spec

llvm-svn: 19953
 2005-01-31 05:51:45 +00:00
Chris Lattner
6a431c25d1 Implement the trivial cases in InstCombine/store.ll 
llvm-svn: 19950
 2005-01-31 05:36:43 +00:00
Chris Lattner
a4ba8e9f0d Implement Transforms/InstCombine/cast-load-gep.ll, which allows us to devirtualize 
11 indirect calls in perlbmk.

llvm-svn: 19947
 2005-01-31 04:50:46 +00:00
Chris Lattner
c29f25e260 Adjust to changes in instruction interfaces. 
llvm-svn: 19900
 2005-01-29 00:39:08 +00:00
Chris Lattner
7dab604f10 Switchinst takes a hint for the number of cases it will have. 
llvm-svn: 19899
 2005-01-29 00:38:45 +00:00
Chris Lattner
ccc0c99fae switchinst ctor now takes a hint for the number of cases that it will have. 
llvm-svn: 19898
 2005-01-29 00:38:26 +00:00
Chris Lattner
d87666619f Adjust Valuehandle to hold its operand directly in it. 
llvm-svn: 19897
 2005-01-29 00:37:36 +00:00
Chris Lattner
b035ec4a9c * add some DEBUG statements 
* Properly compile this:

struct a {};
int test() {
  struct a b[2];
  if (&b[0] != &b[1])
    abort ();
  return 0;
}

to 'return 0', not abort().

llvm-svn: 19875
 2005-01-28 19:32:01 +00:00
Alkis Evlogimenos
eb6bfe9cee Add a dependency to the trace library so that it gets pulled in 
automatically.

llvm-svn: 19828
 2005-01-25 16:23:57 +00:00
Chris Lattner
ab2ab313d3 Get rid of a several dozen more and instructions in specint. 
llvm-svn: 19786
 2005-01-23 20:26:55 +00:00
Chris Lattner
151c8e6390 Handle comparisons of gep instructions that have different typed indices 
as long as they are the same size.

llvm-svn: 19734
 2005-01-21 23:06:49 +00:00
Chris Lattner
5a9660aa71 Add two optimizations. The first folds (X+Y)-X -> Y 
The second folds operations into selects, e.g. (select C, (X+Y), (Y+Z))
-> (Y+(select C, X, Z)

This occurs a few times across spec, e.g.

         select    add/sub
mesa:    83        0
povray:  5         2
gcc      4         2
parser   0         22
perlbmk  13        30
twolf    0         3

llvm-svn: 19706
 2005-01-19 21:50:18 +00:00
Chris Lattner
302ea8908d Fix 'raise' to work with packed types. Patch by Morten Ofstad. 
llvm-svn: 19693
 2005-01-19 16:16:35 +00:00
Chris Lattner
3402945d52 Delete PHI nodes that are not dead but are locked in a cycle of single 
useness.

llvm-svn: 19629
 2005-01-17 05:10:15 +00:00
Chris Lattner
de6b1ca556 Move code out of indentation one level to make it easier to read. 
Disable the xform for < > cases.  It turns out that the following is being
miscompiled:

bool %test(sbyte %S) {
        %T = cast sbyte %S to uint
        %V = setgt uint %T, 255
        ret bool %V
}

llvm-svn: 19628
 2005-01-17 03:20:02 +00:00
Chris Lattner
708ff662ba Fix some bugs in an xform added yesterday. This fixes Prolangs-C/allroots. 
llvm-svn: 19553
 2005-01-14 17:35:12 +00:00
Chris Lattner
13fd87be57 Fix a compile crash on spiff 
llvm-svn: 19552
 2005-01-14 17:17:59 +00:00