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89 Commits

Author SHA1 Message Date
Dan Gohman
ecb7a77885 Change uses of Function::front to Function::getEntryBlock for readability. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35265 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 16:38:57 +00:00
Devang Patel
54959d6cf6 Now LICM is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35001 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 04:41:30 +00:00
Reid Spencer
9133fe2895 Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in 
the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33939 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 23:32:05 +00:00
Reid Spencer
832254e1c2 Changes to support making the shift instructions be true BinaryOperators. 
This feature is needed in order to support shifts of more than 255 bits
on large integer types.  This changes the syntax for llvm assembly to
make shl, ashr and lshr instructions look like a binary operator:
   shl i32 %X, 1
instead of
   shl i32 %X, i8 1
Additionally, this should help a few passes perform additional optimizations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33776 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 02:16:23 +00:00
Chris Lattner
79066fa6ac Adjust #includes to match movement of constant folding code from transformutils to libanalysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33680 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:46:24 +00:00
Reid Spencer
e4d87aa2de For PR950: 
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-23 06:05:41 +00:00
Chris Lattner
0e5f499638 Switch over Transforms/Scalar to use the STATISTIC macro. For each statistic 
converted, we lose a static initializer.  This also allows GCC to emit warnings
about unused statistics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32690 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-19 21:40:18 +00:00
Chris Lattner
ac0b6ae358 Detemplatize the Statistic class. The only type it is instantiated with 
is 'unsigned'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32279 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-06 17:46:33 +00:00
Reid Spencer
3da59db637 For PR950: 
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-27 01:05:10 +00:00
Bill Wendling
b742703137 Removed #include <iostream> and replaced with llvm_* streams. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31923 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-26 09:46:52 +00:00
Chris Lattner
92f7365740 An sinkable instruction may exist with uses, if those uses are in dead blocks. 
Handle this.  This fixes PR908 and Transforms/LICM/2006-09-12-DeadUserOfSunkInstr.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30275 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-12 19:17:09 +00:00
Chris Lattner
7f8897f22e eliminate RegisterOpt. It does the same thing as RegisterPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29925 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:42:52 +00:00
Chris Lattner
3c80a51cfd random code cleanups, no functionality change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28914 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-26 19:10:05 +00:00
Chris Lattner
dac58ad983 Make iostream #inclusion explicit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25514 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-22 23:32:06 +00:00
Andrew Lenharth
38b5807bd9 prevent va_arg from being hoisted from a loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22265 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-20 13:36:33 +00:00
Andrew Lenharth
558bc88a00 core changes for varargs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22254 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-18 18:34:52 +00:00
Misha Brukman
fd93908ae8 Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 23:48:37 +00:00
Chris Lattner
70ac2dcb84 Fix a bug where LICM was not updating AA information properly when sinking 
a pointer value out of a loop causing it to be duplicated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20828 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-25 00:22:36 +00:00
Chris Lattner
1f309c1a4e enable -debug-only=licm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20788 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-23 21:00:12 +00:00
Chris Lattner
68a9d3eb38 Adjust to new interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18958 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-15 07:22:25 +00:00
Chris Lattner
8a9193927a Allow hoisting loads of globals and alloca's in conditionals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18363 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-29 21:26:12 +00:00
Chris Lattner
f3e1d6977e Provide size information when checking to see if we can LICM a load, this 
allows us to hoist more loads in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18265 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-26 21:20:09 +00:00
Chris Lattner
bdacd87957 Fix a bug in the previous checkin that broke 255.vortex 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16355 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 02:34:40 +00:00
Chris Lattner
fb3ee1930b Make sure to update alias analysis information as we transform the function. 
This fixes PR420 and Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16348 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 01:04:07 +00:00
Reid Spencer
551ccae044 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/.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-01 22:55:40 +00:00
Chris Lattner
eaa243039b Fix hoisting of void typed values, e.g. calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15263 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 07:38:32 +00:00
Chris Lattner
56b7ee20da Now that dominator tree children are built in determinstic order, this horrible code 
can go away


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14254 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-19 20:23:35 +00:00
Chris Lattner
edb8433c91 Fix one source of nondeterminism in the -licm pass: the hoist pass 
was processing blocks in whatever order they happened to end up in the
dominator tree data structure.  Force an ordering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14248 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-19 08:56:43 +00:00
Brian Gaeke
802daf8b7d Fix typo in DEBUG printout. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14196 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-17 07:26:52 +00:00
Chris Lattner
2741c97104 Adjust to the changes in the AliasSetTracker interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13690 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:20:19 +00:00
Chris Lattner
3280f7bd55 Move isLoopInvariant to the Loop class 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13051 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:46:08 +00:00
Chris Lattner
5fa802fe27 Loop exit sets are no longer explicitly held, they are dynamically computed on demand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13046 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:15:13 +00:00
Chris Lattner
118dd0ce3d Implement LICM of calls in simple cases. This is sufficient to move around 
sin/cos/strlen calls and stuff.  This implements:
  LICM/call_sink_pure_function.ll
  LICM/call_sink_const_function.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12415 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 04:11:30 +00:00
Chris Lattner
529429224c Update comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11082 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 20:09:22 +00:00
Chris Lattner
329c1c6c94 Improve encapsulation in the Loop and LoopInfo classes by eliminating the 
getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-08 00:09:44 +00:00
Chris Lattner
a3df8a964a Remove the wierd "Operands" loop, by traversing basicblocks in reverse order 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10536 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 08:18:16 +00:00
Chris Lattner
e4365b2e8c Implement LICM/sink_multiple.ll, by sinking all possible instructions in the 
loop before hoisting any.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10534 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 07:22:45 +00:00
Chris Lattner
ba7df4c482 When we delete instructions from the loop, make sure to remove them from the 
AliasSetTracker as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10507 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-18 08:12:32 +00:00
Chris Lattner
00ad4a2d17 Do not promote volatile alias sets into registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10458 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-14 04:52:31 +00:00
Chris Lattner
ea9403f2aa Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10409 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-11 22:23:32 +00:00
Chris Lattner
7d3ced934f Fix bug: LICM/sink_multiple_exits.ll 
Thanks for pointing this out John  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10387 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 22:35:56 +00:00
Chris Lattner
df45bd3803 Don't allow dead instructions to stop sinking early. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10386 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 20:43:29 +00:00
Chris Lattner
e3cfe8d563 Simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10371 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 16:58:24 +00:00
Chris Lattner
f594a03197 Avoid performing two identical lookups when one will suffice 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10370 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 16:57:24 +00:00
Chris Lattner
0ed2da9ac7 Make LICM itself a bit more efficient, and make the generated code more efficient too: don't insert a store in every exit block, because a particular block may be exited to more than once by a loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10369 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 15:56:24 +00:00
Chris Lattner
a2706518f9 Implement instruction sinking out of loops. This still can do a little bit 
better job, but this is the majority of the work.  This implements
LICM/sink*.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10358 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 06:41:05 +00:00
Chris Lattner
ed6dfc2856 Refactor code a little bit, eliminating the gratuitous InstVisitor, which 
should make subsequent changes simpler.  This also allows us to hoist vaarg
and vanext instructions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10342 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 19:32:44 +00:00
Chris Lattner
92094b4d92 Fine grainify namespacification 
Code cleanups
Make LICM::SafeToHoist marginally more efficient


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10341 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 17:18:00 +00:00
Brian Gaeke
d0fde30ce8 Put all LLVM code into the llvm namespace, as per bug 109. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-11 22:41:34 +00:00
Misha Brukman
ed1f7c81aa Declare FunctionPasses as such so that they can be used in FunctionPassManager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9768 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-07 17:20:18 +00:00