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3100 Commits

Author SHA1 Message Date
Chris Lattner
7386e6333d "extract" the block extractor pass from bugpoint (haha) 
llvm-svn: 15714
 2004-08-13 03:05:17 +00:00
Chris Lattner
889d346e6e Add value mapper support for select constant exprs. This should fix a bug 
Nate ran into when bugpointing siod.  This fix should go into LLVM 1.3

llvm-svn: 15712
 2004-08-13 02:43:19 +00:00
Chris Lattner
cde351ee30 This patch makes the inliner refuse to inline functions that have alloca 
instructions in the body of the function (not the entry block).  This fixes
test/Programs/SingleSource/Regression/C/2004-08-12-InlinerAndAllocas.c
and test/Programs/External/SPEC/CINT2000/176.gcc on zion.

This should obviously be pulled into 1.3.

llvm-svn: 15684
 2004-08-12 05:45:09 +00:00
Chris Lattner
7f1c7ede5b Fix code extraction of unwind blocks. This fixed bugs that bugpoint can 
run into.  This should go into 1.3

llvm-svn: 15679
 2004-08-12 03:17:02 +00:00
Chris Lattner
a7ba90e672 Hrm, this pass didn't compile. This bugfix should go into 1.3! 
llvm-svn: 15676
 2004-08-12 02:44:23 +00:00
Chris Lattner
4456da6a4c Fix InstCombine/2004-08-10-BoolSetCC.ll, a bug that is miscompiling 
176.gcc.  Note that this is apparently not the only bug miscompiling gcc
though. :(

llvm-svn: 15639
 2004-08-11 00:50:51 +00:00
Chris Lattner
8e7260652b Fix InstCombine/2004-08-09-RemInfLoop.llx 
This should go into the 1.3 branch

llvm-svn: 15593
 2004-08-09 21:05:48 +00:00
Chris Lattner
4956a32c9e Fix another really nasty regression that Anshu pointed out. In cases where 
dangling constant users were removed from a function, causing it to be dead,
we never removed the call graph edge from the external node to the function.

In most cases, this didn't cause a problem (by luck).  This should definitely
go into 1.3

llvm-svn: 15570
 2004-08-08 03:29:50 +00:00
Chris Lattner
92b9906199 Two fixes: 
1. Fix a REALLY nasty cyclic replacement issue that Anshu discovered, causing
   nondeterminstic crashes and memory corruption.
2. For performance, don't go inserting constantexpr casts of GV pointers.

This should definitely go into 1.3

llvm-svn: 15568
 2004-08-08 01:30:07 +00:00
Chris Lattner
6a93462144 This DEBUG is buggy. comment it out because it's not worth fixing. This 
should go into 1.3

llvm-svn: 15567
 2004-08-08 01:27:56 +00:00
Alkis Evlogimenos
832437255d Stop using getValues(). 
llvm-svn: 15487
 2004-08-04 08:44:43 +00:00
Chris Lattner
7aa2d4747a Fix a regression in InstCombine/xor.ll 
llvm-svn: 15410
 2004-08-01 19:42:59 +00:00
Chris Lattner
7471b96a05 Expose this as a functionpass 
llvm-svn: 15369
 2004-07-31 10:01:58 +00:00
Misha Brukman
9c003d8f65 Fix De Morgan's name. 
llvm-svn: 15343
 2004-07-30 12:50:08 +00:00
Chris Lattner
d4252a7c64 Start using the PatternMatcher a bit. 
llvm-svn: 15342
 2004-07-30 07:50:03 +00:00
Misha Brukman
f4a410f907 Fix #includes of i*.h => Instructions.h as per PR403. 
llvm-svn: 15337
 2004-07-29 17:30:57 +00:00
Misha Brukman
63b38bd2ed Fix #includes of i*.h => Instructions.h as per PR403. 
llvm-svn: 15334
 2004-07-29 17:30:56 +00:00
Misha Brukman
2b3387a6d9 Fix #includes of i*.h => Instructions.h as per PR403. 
llvm-svn: 15328
 2004-07-29 17:05:13 +00:00
Alkis Evlogimenos
fd7a2d4477 Merge i*.h headers into Instructions.h as part of bug403. 
llvm-svn: 15325
 2004-07-29 12:17:34 +00:00
Robert Bocchino
7b5b86cd0f This change fixed a bug in the function visitMul. The prior version 
assumed that a constant on the RHS of a multiplication was either an
IntConstant or an FPConstant.  It checked for an IntConstant and then,
if it did not find one, did a hard cast to an FPConstant.  That code
would crash if the RHS were a ConstantExpr that was neither an
IntConstant nor an FPConstant.  This version replaces the hard cast
with a dyn_cast.  It performs the same way for IntConstants and
FPConstants but does nothing, instead of crashing, for constant
expressions.

The regression test for this change is 2004-07-27-ConstantExprMul.ll.

llvm-svn: 15291
 2004-07-27 21:02:21 +00:00
Brian Gaeke
38b79e8fbc Make the create...() functions for some of these passes return a FunctionPass *. 
llvm-svn: 15276
 2004-07-27 17:43:21 +00:00
Chris Lattner
50eb771d37 Fix hoisting of void typed values, e.g. calls 
llvm-svn: 15263
 2004-07-27 07:38:32 +00:00
Chris Lattner
f29807169a Implement DeadStoreElim/alloca.llx by observing that allocas are dead at the 
end of the function (either return or unwind)

llvm-svn: 15232
 2004-07-26 06:14:11 +00:00
Chris Lattner
e5ad26dbb3 Throttle back indvar substitution from creating multiplies in loops. This is bad bad bad. 
llvm-svn: 15227
 2004-07-26 02:47:12 +00:00
Chris Lattner
7b25bcdf52 * Substantially simplify how free instructions are handled (potentially fixing 
a bug in DSE).
* Delete dead operand uses iteratively instead of recursively, using a
  SetVector.
* Defer deletion of dead operand uses until the end of processing, which means
  we don't have to bother with updating the AliasSetTracker.  This speeds up
  DSE substantially.

llvm-svn: 15204
 2004-07-25 11:09:56 +00:00
Chris Lattner
4c1c1ac7e4 Free instructions kill values too. This implements DeadStoreElim/free.llx 
llvm-svn: 15199
 2004-07-25 07:58:38 +00:00
Chris Lattner
bad6478b00 obvious fix 
llvm-svn: 15162
 2004-07-24 07:51:27 +00:00
Chris Lattner
3844c300de This is a trivial dead store elimination pass. It very very simple and 
can be improved in many ways.  But: stop laughing, even with -basicaa it
deletes 15% of the stores in 252.eon :)

llvm-svn: 15101
 2004-07-22 08:00:28 +00:00
Chris Lattner
51f7c9e56d Update GC intrinsics to take a pointer to the object as well as a pointer 
to the field being updated.  Patch contributed by Tobias Nurmiranta

llvm-svn: 15097
 2004-07-22 05:51:13 +00:00
Brian Gaeke
902dcf0729 These files don't need to include <iostream> since they include "Support/Debug.h". 
llvm-svn: 15089
 2004-07-21 20:50:33 +00:00
Chris Lattner
d8f5e2ccac * Further cleanup. 
* Test for whether bits are shifted out during the optzn.

If so, the fold is illegal, though it can be handled explicitly for setne/seteq

This fixes the miscompilation of 254.gap last night, which was a latent bug
exposed by other optimizer improvements.

llvm-svn: 15085
 2004-07-21 20:14:10 +00:00
Chris Lattner
1638de4499 Make cast-cast code a bit more defensive 
"simplify" a bit of code for comparison/and folding

llvm-svn: 15082
 2004-07-21 19:50:44 +00:00
Chris Lattner
4fbad968f8 Remove special casing of pointers and treat them generically as integers of 
the appopriate size.  This gives us the ability to eliminate int -> ptr -> int

llvm-svn: 15063
 2004-07-21 04:27:24 +00:00
Chris Lattner
45b50d14c9 Fix a serious code pessimization problem. If an inlined function has a single 
return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.

llvm-svn: 15030
 2004-07-20 05:45:24 +00:00
Chris Lattner
11ffd59e37 Implement Transforms/InstCombine/IntPtrCast.ll 
llvm-svn: 15029
 2004-07-20 05:21:00 +00:00
Chris Lattner
ec67df0ed1 Ignore instructions that are in trivially dead functions. This allows us 
to constify 14 globals instead of 4 in a trivial C++ testcase.

llvm-svn: 15027
 2004-07-20 03:58:07 +00:00
Chris Lattner
44d0b9502a Implement InstCombine/GEPIdxCanon.ll 
llvm-svn: 15024
 2004-07-20 01:48:15 +00:00
Chris Lattner
5823ac1c21 Implement SimplifyCFG/BrUnwind.ll 
llvm-svn: 15022
 2004-07-20 01:17:38 +00:00
Chris Lattner
4e2dbc6b4a Rewrite cast->cast elimination code completely based on the information we 
actually care about.  Someday when the cast instruction is gone, we can do
better here, but this will do for now.  This implements
instcombine/cast.ll:test17/18 as well.

llvm-svn: 15018
 2004-07-20 00:59:32 +00:00
Chris Lattner
e2774757fe Fix a performance regression from the CPR patch, simplify code 
llvm-svn: 14974
 2004-07-18 21:34:16 +00:00
Chris Lattner
d47504d9db Strip out and simplify some code. This also fixes the regression last 
night compiling cfrac.  It did not realize that code like this:

int G; int *H = &G;

takes the address of G.

llvm-svn: 14973
 2004-07-18 19:56:20 +00:00
Chris Lattner
f3edc49ae2 Minor cleanup, no functionality change 
llvm-svn: 14972
 2004-07-18 18:59:44 +00:00
Reid Spencer
3b4e83ec83 Remove an if statement that would never be reached. 
llvm-svn: 14968
 2004-07-18 08:41:47 +00:00
Reid Spencer
f0a5bcaae4 Delete a redundant if branch. 
llvm-svn: 14967
 2004-07-18 08:34:52 +00:00
Reid Spencer
c44cb6bd9f Expand the coercion of constants to include the newly constant Globals. 
llvm-svn: 14966
 2004-07-18 08:34:19 +00:00
Reid Spencer
539429d9b5 Delete a no-op loop. 
llvm-svn: 14965
 2004-07-18 08:32:43 +00:00
Reid Spencer
6c2b627e23 Expand the scope to include global values because they are now constants 
too.

llvm-svn: 14964
 2004-07-18 08:32:10 +00:00
Reid Spencer
199aeb7f59 Avoid an unnecessary isa<Constant>. 
llvm-svn: 14963
 2004-07-18 08:31:18 +00:00
Chris Lattner
9238d78dc3 Remove useless statistic, fix some slightly broken logic 
llvm-svn: 14958
 2004-07-18 07:22:58 +00:00
Chris Lattner
2da5eee33c Fix a rather serious bug in previous checkin 
llvm-svn: 14957
 2004-07-18 06:56:58 +00:00