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980 Commits

Author SHA1 Message Date
Chris Lattner
2fae8a1ef9 Add support for unreachable 
llvm-svn: 17056
 2004-10-16 18:21:33 +00:00
Chris Lattner
8d479b62ad Add support for undef 
llvm-svn: 17055
 2004-10-16 18:19:26 +00:00
Chris Lattner
cbdf19fed2 Add support 
llvm-svn: 17052
 2004-10-16 18:16:19 +00:00
Chris Lattner
b3a86dc93f Be more careful about looking for constants when we really want constantint's. 
llvm-svn: 17029
 2004-10-16 16:07:10 +00:00
Chris Lattner
3fc5e3778f Do not use the same variable name for two different variables in the 
same scope.  This confused VC++ (and probably people too!).  Patch by
Morten Ofstad!

llvm-svn: 16985
 2004-10-14 14:59:16 +00:00
Reid Spencer
e6418ec30f Update to reflect changes in Makefile rules. 
llvm-svn: 16950
 2004-10-13 11:46:52 +00:00
Chris Lattner
6b6e5a5815 This nutty patch has been in my tree since before 1.3 went out, and it needs 
to go in.  This patch allows us to compute the trip count of loops controlled
by values loaded from constant arrays.  The cannonnical example of this is
strlen when passed a constant argument:

for (int i = 0; "constantstring"[i]; ++i) ;
return i;

In this case, it will compute that the loop executes 14 times, which means
that the exit value of i is 14.  Because of this, the loop gets DCE'd and
we are happy.  This also applies to anything that does similar things, e.g.
loops like this:

  const float Array[] = { 0.1, 2.1, 3.2, 23.21 };
  for (int i = 0; Array[i] < 20; ++i)

and is actually fairly general.

The problem with this is that it almost never triggers.  The reason is that
we run indvars and the loop optimizer only at compile time, which is before
things like strlen and strcpy have been inlined into the program from libc.
Because of this, it almost never is used (it triggers twice in specint2k).

I'm committing it because it DOES work, may be useful in the future, and
doesn't slow us down at all.  If/when we start running the loop optimizer
at link-time (-O4?) this will be very nice indeed :)

llvm-svn: 16926
 2004-10-12 01:49:27 +00:00
Chris Lattner
f8dab00902 Fix SingleSource/Benchmarks/McGill/chomp 
llvm-svn: 16912
 2004-10-11 04:07:27 +00:00
Reid Spencer
bc135b067a Build both archive and relinked objects 
llvm-svn: 16892
 2004-10-10 22:17:39 +00:00
Reid Spencer
7d9cba7a0f Initial version of automake Makefile.am file. 
llvm-svn: 16885
 2004-10-10 20:43:57 +00:00
Chris Lattner
d15e144241 Fix a nasty dangling pointer problem, due to a free'd pointer being left in 
a map.  This caused problems if a later object happened to be allocated at
the free'd object's address.

llvm-svn: 16813
 2004-10-07 20:01:31 +00:00
Chris Lattner
e412d10cc0 Dont' let null nodes sneak past cast instructions 
llvm-svn: 16779
 2004-10-06 19:29:13 +00:00
Chris Lattner
43c0372c0b 'Pass' should now not be derived from by clients. Instead, they should derive 
from ModulePass.  Instead of implementing Pass::run, then should implement
ModulePass::runOnModule.

llvm-svn: 16436
 2004-09-20 04:48:05 +00:00
Chris Lattner
01bbefa96c Finegrainify namespacification 
'Pass' should now not be derived from by clients.  Instead, they should derive
from ModulePass.  Instead of implementing Pass::run, then should implement
ModulePass::runOnModule.

llvm-svn: 16434
 2004-09-20 04:44:31 +00:00
Chris Lattner
e6755fe307 Fix a nasty iterator invalidation problem I introduced yesterday. This 
unfortunately is the cause of a bunch of failures from tonight, and the
reason the tester is running so slow :(

llvm-svn: 16407
 2004-09-19 19:01:06 +00:00
Chris Lattner
110bbafcf7 Add CallGraphNode::removeAnyCallEdgeTo method 
llvm-svn: 16398
 2004-09-18 21:34:34 +00:00
Chris Lattner
53dea1ce37 When changing a function, make sure to update the CallGraphNode for the 
function, not just the CallGraph.

llvm-svn: 16388
 2004-09-18 00:27:20 +00:00
Chris Lattner
a9b80a3258 Implement new changeFunction method, nuke a never implemented one. 
llvm-svn: 16386
 2004-09-18 00:22:13 +00:00
Reid Spencer
c6a8d70cff Convert code to compile with vc7.1. 
Patch contributed by Paolo Invernizzi. Thanks Paolo!

llvm-svn: 16368
 2004-09-15 17:06:42 +00:00
Chris Lattner
f1a0bf88c5 Add some assertions 
llvm-svn: 16366
 2004-09-15 16:59:47 +00:00
Chris Lattner
606caa617e Implement an AliasSetTracker::copyValue method 
llvm-svn: 16344
 2004-09-14 19:15:32 +00:00
Alkis Evlogimenos
0c50e0f211 Fixes to make LLVM compile with vc7.1. 
Patch contributed by Paolo Invernizzi!

llvm-svn: 16152
 2004-09-03 18:19:51 +00:00
Reid Spencer
c4abcbefb1 Changes For Bug 352 
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137
 2004-09-01 22:55:40 +00:00
Chris Lattner
818ac2d5e2 Fix a bug that caused the pass to go into infinite loops on trivial testcases. 
This is fallout of the Bug 122 changes.

llvm-svn: 15811
 2004-08-16 05:38:02 +00:00
Chris Lattner
0b9b58e550 Add standard print/dump methods to CallGraph classes. 
llvm-svn: 15569
 2004-08-08 03:27:49 +00:00
Chris Lattner
13e1bc338d Hide this option 
llvm-svn: 15415
 2004-08-02 20:16:21 +00:00
Misha Brukman
58104df77b Fix #includes of i*.h => Instructions.h as per PR403. 
llvm-svn: 15334
 2004-07-29 17:30:56 +00:00
Misha Brukman
2a80e53645 Fix #includes of i*.h => Instructions.h as per PR403. 
llvm-svn: 15328
 2004-07-29 17:05:13 +00:00
Alkis Evlogimenos
fb27f702ca Merge i*.h headers into Instructions.h as part of bug403. 
llvm-svn: 15325
 2004-07-29 12:17:34 +00:00
Chris Lattner
b2cf39d1a4 Fix test/Regression/Analysis/BasicAA/2004-07-28-MustAliasbug.llx 
This also fixes the miscompilation of MallocBench/gs with dead store
elimination enabled.

llvm-svn: 15324
 2004-07-29 07:56:39 +00:00
Brian Gaeke
45adb41f46 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
81f96c5a79 nuke pointless -debug output 
llvm-svn: 15267
 2004-07-27 08:03:18 +00:00
Chris Lattner
6a1dd59421 Fix conservative assumption, which was quite broken. Also, notice that 
functions known to not access memory (like sin/cos) don't access memory! :)

llvm-svn: 15264
 2004-07-27 07:46:26 +00:00
Chris Lattner
e921652646 Remove a bogus assertion 
llvm-svn: 15261
 2004-07-27 07:22:21 +00:00
Chris Lattner
c76d21f55d Complete rewrite of this pass to be faster, use less memory, be easier to 
understand, and more accurate to boot!  This implements
GlobalModRef/purecse.ll over the previous impl.

llvm-svn: 15260
 2004-07-27 06:40:37 +00:00
Chris Lattner
550242f7ec Use context-sensitive alias analysis to avoid pessimization in clients of 
AliasSetTracker (dse and licm).  This implements
DeadStoreElimination/context-sensitive.llx

llvm-svn: 15254
 2004-07-27 02:20:26 +00:00
Chris Lattner
40bd881142 Make basicaa a bit more aggressive 
llvm-svn: 15252
 2004-07-27 02:18:52 +00:00
Chris Lattner
fe3fff9354 basic-aa can actually provide simple mod/ref info 
llvm-svn: 15251
 2004-07-27 02:13:55 +00:00
Chris Lattner
9cfa22fb48 This was implemented back in march 
llvm-svn: 15250
 2004-07-27 01:59:42 +00:00
Chris Lattner
8b2590f09f Add some new methods 
llvm-svn: 15230
 2004-07-26 05:50:23 +00:00
Chris Lattner
447e112745 Fix a latent bug in the AliasSetTracker that was exposed by the FreeInst additions and broke a bunch of programs last night. 
llvm-svn: 15214
 2004-07-25 18:32:01 +00:00
Chris Lattner
31d9cbf7bb Add support for free instructions 
llvm-svn: 15197
 2004-07-25 07:57:37 +00:00
Chris Lattner
e3adc34ea7 Clean up reference counting to stop "leaking" alias sets 
llvm-svn: 15099
 2004-07-22 07:58:18 +00:00
Brian Gaeke
f18cdca667 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
195950df76 Add capability to remove aliasing aliassets from an AST 
llvm-svn: 15066
 2004-07-21 07:04:26 +00:00
Chris Lattner
f9976c5dbf Make the AST interface a bit richer by returning whether an insertion caused 
an insertion or not (because the pointer set already existed).

llvm-svn: 15064
 2004-07-21 05:18:04 +00:00
Chris Lattner
36940c22f7 Do not ignore casts unless they are pointer-pointer casts. This caused us 
to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.

llvm-svn: 15062
 2004-07-21 03:56:54 +00:00
Reid Spencer
b339652b44 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14942
 2004-07-18 00:18:30 +00:00
Chris Lattner
74807fe1a3 Fix incorrect computation of mod/ref sets. Do not ask for mod/ref information 
for objects of size 0.

llvm-svn: 14908
 2004-07-17 07:40:34 +00:00
Chris Lattner
2b68acbfe0 Print modref information in a useful way. 
llvm-svn: 14907
 2004-07-17 06:43:20 +00:00