oota-llvm.git
19 years agoThese don't need to be sdivs.
Chris Lattner [Fri, 7 Oct 2005 15:27:12 +0000 (15:27 +0000)]
These don't need to be sdivs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23661 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agofix indentation
Chris Lattner [Fri, 7 Oct 2005 06:37:02 +0000 (06:37 +0000)]
fix indentation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23660 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoTurn sdivs into udivs when we can prove the sign bits are clear. This
Chris Lattner [Fri, 7 Oct 2005 06:10:46 +0000 (06:10 +0000)]
Turn sdivs into udivs when we can prove the sign bits are clear.  This
implements CodeGen/PowerPC/div-2.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23659 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoNew testcase, should turn into a ushr
Chris Lattner [Fri, 7 Oct 2005 06:10:03 +0000 (06:10 +0000)]
New testcase, should turn into a ushr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23658 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRemove prolific source of VC++ truncation warnings.
Jeff Cohen [Fri, 7 Oct 2005 05:29:25 +0000 (05:29 +0000)]
Remove prolific source of VC++ truncation warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23657 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRemove useless variable.
Jeff Cohen [Fri, 7 Oct 2005 05:28:29 +0000 (05:28 +0000)]
Remove useless variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23656 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoadd a hack to work around broken VC++ scoping rules. Thx to JeffC for pointing
Chris Lattner [Fri, 7 Oct 2005 05:23:36 +0000 (05:23 +0000)]
add a hack to work around broken VC++ scoping rules.  Thx to JeffC for pointing
this out to me

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23655 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix a CQ regression from my patch to split F32/F64 into seperate register
Chris Lattner [Fri, 7 Oct 2005 05:00:52 +0000 (05:00 +0000)]
Fix a CQ regression from my patch to split F32/F64 into seperate register
classes on PPC.  We were emitting fmr instructions to do fp extensions, which
weren't getting coallesced.  This fixes Regression/CodeGen/PowerPC/fpcopy.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23654 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agodouble to float casts should nto result in an fmr
Chris Lattner [Fri, 7 Oct 2005 04:59:41 +0000 (04:59 +0000)]
double to float casts should nto result in an fmr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23653 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix CodeGen/Generic/bool-to-double.ll
Chris Lattner [Fri, 7 Oct 2005 04:50:48 +0000 (04:50 +0000)]
Fix CodeGen/Generic/bool-to-double.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23652 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agotest broken in the IA64 backend.
Chris Lattner [Fri, 7 Oct 2005 04:49:00 +0000 (04:49 +0000)]
test broken in the IA64 backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23651 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoPull out Call, reducing stack frame size from 6032 bytes to 5184 bytes.
Chris Lattner [Thu, 6 Oct 2005 19:07:45 +0000 (19:07 +0000)]
Pull out Call, reducing stack frame size from 6032 bytes to 5184 bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23650 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoPull out setcc, this reduces stack frame size from 7520 to 6032 bytes
Chris Lattner [Thu, 6 Oct 2005 19:03:35 +0000 (19:03 +0000)]
Pull out setcc, this reduces stack frame size from 7520 to 6032 bytes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23649 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoPull two more methods out, reducing stack frame size from 8224 -> 7520 bytes
Chris Lattner [Thu, 6 Oct 2005 18:56:10 +0000 (18:56 +0000)]
Pull two more methods out, reducing stack frame size from 8224 -> 7520 bytes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23648 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd a recursive-iterative hybrid stage to attempt to reduce stack space, this
Chris Lattner [Thu, 6 Oct 2005 18:45:51 +0000 (18:45 +0000)]
Add a recursive-iterative hybrid stage to attempt to reduce stack space, this
helps but not enough.

Start pulling cases out of PPC32DAGToDAGISel::Select.  With GCC 4, this function
required 8512 bytes of stack space for each invocation (GCC 3 required less
than 700 bytes).  Pulling this first function out gets us down to 8224.  More
to come :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23647 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agosilence a bogus GCC warning
Chris Lattner [Thu, 6 Oct 2005 17:39:10 +0000 (17:39 +0000)]
silence a bogus GCC warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23646 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix the LLC regressions on X86 last night. In particular, when undoing
Chris Lattner [Thu, 6 Oct 2005 17:19:06 +0000 (17:19 +0000)]
Fix the LLC regressions on X86 last night.  In particular, when undoing
previous copy elisions and we discover we need to reload a register, make
sure to use the regclass of the original register for the reload, not the
class of the current register.  This avoid using 16-bit loads to reload 32-bit
values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23645 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoThis is suppose to work now
Andrew Lenharth [Thu, 6 Oct 2005 16:54:29 +0000 (16:54 +0000)]
This is suppose to work now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23644 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoremove VAX compatibility instruction, we will never use this
Andrew Lenharth [Thu, 6 Oct 2005 16:53:32 +0000 (16:53 +0000)]
remove VAX compatibility instruction, we will never use this

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23643 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoMake the legalizer completely non-recursive
Chris Lattner [Thu, 6 Oct 2005 01:20:27 +0000 (01:20 +0000)]
Make the legalizer completely non-recursive

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23642 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoLet the combiner handle more cases
Nate Begeman [Wed, 5 Oct 2005 21:44:43 +0000 (21:44 +0000)]
Let the combiner handle more cases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23641 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRemove some bad code from Legalize
Nate Begeman [Wed, 5 Oct 2005 21:44:10 +0000 (21:44 +0000)]
Remove some bad code from Legalize

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23640 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoCheck in some more DAGCombiner pieces
Nate Begeman [Wed, 5 Oct 2005 21:43:42 +0000 (21:43 +0000)]
Check in some more DAGCombiner pieces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23639 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix a bug in the local spiller, where we could take code like this:
Chris Lattner [Wed, 5 Oct 2005 18:30:19 +0000 (18:30 +0000)]
Fix a bug in the local spiller, where we could take code like this:

  store r12 -> [ss#2]
  R3 = load [ss#1]
  use R3
  R3 = load [ss#2]
  R4 = load [ss#1]

and turn it into this code:

  store R12 -> [ss#2]
  R3 = load [ss#1]
  use R3
  R3 = R12
  R4 = R3    <- oops!

The problem was that promoting R3 = load[ss#2] to a copy missed the fact that
the instruction invalidated R3 at that point.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23638 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agosilence some warnings
Chris Lattner [Wed, 5 Oct 2005 17:15:09 +0000 (17:15 +0000)]
silence some warnings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23637 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoimplement visitBR_CC so that PowerPC/inverted-bool-compares.ll passes
Chris Lattner [Wed, 5 Oct 2005 06:47:48 +0000 (06:47 +0000)]
implement visitBR_CC so that PowerPC/inverted-bool-compares.ll passes
with the dag combiner.  This speeds up espresso by 8%, reaching performance
parity with the dag-combiner-disabled llc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23636 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agofix some pastos
Chris Lattner [Wed, 5 Oct 2005 06:37:22 +0000 (06:37 +0000)]
fix some pastos

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23635 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd a new HandleNode class, which is used to handle (haha) cases in the
Chris Lattner [Wed, 5 Oct 2005 06:35:28 +0000 (06:35 +0000)]
Add a new HandleNode class, which is used to handle (haha) cases in the
dead node elim and dag combiner passes where the root is potentially updated.
This fixes a fixme in the dag combiner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23634 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoadd a helper class
Chris Lattner [Wed, 5 Oct 2005 06:34:34 +0000 (06:34 +0000)]
add a helper class

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23633 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoImplement the code for PowerPC/inverted-bool-compares.ll, even though it
Chris Lattner [Wed, 5 Oct 2005 06:11:08 +0000 (06:11 +0000)]
Implement the code for PowerPC/inverted-bool-compares.ll, even though it
that testcase still does not pass with the dag combiner.  This is because
not all forms of br* are folded yet.

Also, when we combine a node into another one, delete the node immediately
instead of waiting for the node to potentially come up in the future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23632 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agomake sure that -view-isel-dags is the input to the isel, not the input to
Chris Lattner [Wed, 5 Oct 2005 06:09:10 +0000 (06:09 +0000)]
make sure that -view-isel-dags is the input to the isel, not the input to
the second phase of dag combining

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23631 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix a crash compiling Olden/tsp
Chris Lattner [Wed, 5 Oct 2005 04:45:43 +0000 (04:45 +0000)]
Fix a crash compiling Olden/tsp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23630 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd some rules for building preprocessed files
Chris Lattner [Wed, 5 Oct 2005 00:28:41 +0000 (00:28 +0000)]
Add some rules for building preprocessed files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23629 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agorefactor a bit of code.
Chris Lattner [Tue, 4 Oct 2005 21:35:50 +0000 (21:35 +0000)]
refactor a bit of code.

When moving constant entries in 'Map' if the entry is the representative
constant for the abstractypemap, make sure to update it as well.  This
fixes the bcreader failures from last night on several C++ apps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23628 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoMinor speedup to avoid array searches given a Use*. This speeds up bc reading
Chris Lattner [Tue, 4 Oct 2005 18:47:09 +0000 (18:47 +0000)]
Minor speedup to avoid array searches given a Use*.  This speeds up bc reading
of the python test from 1:00 to 54s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23627 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoChange the signature of replaceUsesOfWithOnConstant. The bool was always
Chris Lattner [Tue, 4 Oct 2005 18:13:04 +0000 (18:13 +0000)]
Change the signature of replaceUsesOfWithOnConstant.  The bool was always
true dynamically.  Finally, pass the Use* that replaceAllUsesWith has into
the method for future use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23626 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoChange the signature of replaceUsesOfWithOnConstant to take a Use* and not
Chris Lattner [Tue, 4 Oct 2005 18:12:13 +0000 (18:12 +0000)]
Change the signature of replaceUsesOfWithOnConstant to take a Use* and not
take the bool.  The bool is always true dynamically.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23625 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFor large constants (e.g. arrays and structs with many elements) just
Chris Lattner [Tue, 4 Oct 2005 17:48:46 +0000 (17:48 +0000)]
For large constants (e.g. arrays and structs with many elements) just
creating the keys and doing comparisons to index into 'Map' takes a lot
of time.  For these large constants, keep an inverse map so that 'remove'
and move operations are much faster.

This speeds up a release build of the bc reader on Eric's nasty python
bytecode file from 1:39 to 1:00s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23624 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agominor cleanup/fastpath for the bcreader. This speeds up the bcreader
Chris Lattner [Tue, 4 Oct 2005 16:52:46 +0000 (16:52 +0000)]
minor cleanup/fastpath for the bcreader.  This speeds up the bcreader
from 1:41 -> 1:39 on the large python .bc file in a release build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23623 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoReverting to version - until problem isolated.
Jim Laskey [Tue, 4 Oct 2005 16:41:51 +0000 (16:41 +0000)]
Reverting to version - until problem isolated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23622 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd a forward def
Chris Lattner [Tue, 4 Oct 2005 05:09:20 +0000 (05:09 +0000)]
Add a forward def

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23621 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix some faulty logic in the libcall inserter.
Nate Begeman [Tue, 4 Oct 2005 02:10:55 +0000 (02:10 +0000)]
Fix some faulty logic in the libcall inserter.

Since calls return more than one value, don't bail if one of their uses
happens to be a node that's not an MVT::Other when following the chain
from CALLSEQ_START to CALLSEQ_END.

Once we've found a CALLSEQ_START, we can just return; there's no need to
tail-recurse further up the graph.

Most importantly, just because something only has one use doesn't mean we
should use it's one use to follow from start to end.  This faulty logic
caused us to follow a chain of one-use FP operations back to a much earlier
call, putting a cycle in the graph from a later start to an earlier end.

This is a better fix that reverting to the workaround committed earlier
today.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23620 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoimplement the struct version of the array speedup, speeding up the
Chris Lattner [Tue, 4 Oct 2005 01:17:50 +0000 (01:17 +0000)]
implement the struct version of the array speedup, speeding up the
testcase a bit more from 1:48 -> 1.40.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23619 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix DemoteRegToStack on an invoke. This fixes PR634.
Chris Lattner [Tue, 4 Oct 2005 00:44:01 +0000 (00:44 +0000)]
Fix DemoteRegToStack on an invoke.  This fixes PR634.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23618 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd back a workaround that fixes some breakages from chris's last change.
Nate Begeman [Tue, 4 Oct 2005 00:37:37 +0000 (00:37 +0000)]
Add back a workaround that fixes some breakages from chris's last change.
Neither of us have yet figured out why this code is necessary, but stuff
breaks if its not there.  Still tracking this down...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23617 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoClean up the code a bit. Use isInstructionTriviallyDead to be more aggressive
Chris Lattner [Mon, 3 Oct 2005 23:43:43 +0000 (23:43 +0000)]
Clean up the code a bit.  Use isInstructionTriviallyDead to be more aggressive
and more correct than use_empty().  This fixes PR635 and
SimplifyCFG/2005-10-02-InvokeSimplify.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23616 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agonew testcase for PR635
Chris Lattner [Mon, 3 Oct 2005 23:42:54 +0000 (23:42 +0000)]
new testcase for PR635

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23615 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoChange ConstantArray::replaceUsesOfWithOnConstant to attempt to update
Chris Lattner [Mon, 3 Oct 2005 22:51:37 +0000 (22:51 +0000)]
Change ConstantArray::replaceUsesOfWithOnConstant to attempt to update
constant arrays in place instead of reallocating them and replaceAllUsesOf'ing
the result.  This speeds up a release build of the bcreader from:

136.987u 120.866s 4:24.38
to
49.790u 49.890s 1:40.14

... a 2.6x speedup parsing a large python bc file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23614 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agomove some methods, no other changes
Chris Lattner [Mon, 3 Oct 2005 21:58:36 +0000 (21:58 +0000)]
move some methods, no other changes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23613 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agominor microoptimizations
Chris Lattner [Mon, 3 Oct 2005 21:56:24 +0000 (21:56 +0000)]
minor microoptimizations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23612 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoUse a map to cache the ModuleType information, so we can do logarithmic
Chris Lattner [Mon, 3 Oct 2005 21:26:53 +0000 (21:26 +0000)]
Use a map to cache the ModuleType information, so we can do logarithmic
lookups instead of linear time lookups.  This speeds up bc parsing of a
large file from

137.834u 118.256s 4:27.96
to
132.611u 114.436s 4:08.53

with a release build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23611 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRefactor gathering node info and emission.
Jim Laskey [Mon, 3 Oct 2005 12:30:32 +0000 (12:30 +0000)]
Refactor gathering node info and emission.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23610 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoclean up this code a bit, no functionality change
Chris Lattner [Mon, 3 Oct 2005 07:22:07 +0000 (07:22 +0000)]
clean up this code a bit, no functionality change

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23609 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoSpeed up the asm printer a lot by not printing formatted LLVM asm output
Chris Lattner [Mon, 3 Oct 2005 07:08:36 +0000 (07:08 +0000)]
Speed up the asm printer a lot by not printing formatted LLVM asm output
for globals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23608 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoBreak the body of the loop out into a new method
Chris Lattner [Mon, 3 Oct 2005 04:47:08 +0000 (04:47 +0000)]
Break the body of the loop out into a new method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23606 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix case of path
Chris Lattner [Mon, 3 Oct 2005 03:32:39 +0000 (03:32 +0000)]
Fix case of path

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23605 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoMake IVUseShouldUsePostIncValue more aggressive when the use is a PHI. In
Chris Lattner [Mon, 3 Oct 2005 02:50:05 +0000 (02:50 +0000)]
Make IVUseShouldUsePostIncValue more aggressive when the use is a PHI.  In
particular, it should realize that phi's use their values in the pred block
not the phi block itself.  This change turns our em3d loop from this:

_test:
        cmpwi cr0, r4, 0
        bgt cr0, LBB_test_2     ; entry.no_exit_crit_edge
LBB_test_1:     ; entry.loopexit_crit_edge
        li r2, 0
        b LBB_test_6    ; loopexit
LBB_test_2:     ; entry.no_exit_crit_edge
        li r6, 0
LBB_test_3:     ; no_exit
        or r2, r6, r6
        lwz r6, 0(r3)
        cmpw cr0, r6, r5
        beq cr0, LBB_test_6     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r2, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit
LBB_test_5:     ; endif.loopexit.loopexit_crit_edge
        addi r3, r2, 1
        blr
LBB_test_6:     ; loopexit
        or r3, r2, r2
        blr

into:

_test:
        cmpwi cr0, r4, 0
        bgt cr0, LBB_test_2     ; entry.no_exit_crit_edge
LBB_test_1:     ; entry.loopexit_crit_edge
        li r2, 0
        b LBB_test_5    ; loopexit
LBB_test_2:     ; entry.no_exit_crit_edge
        li r6, 0
LBB_test_3:     ; no_exit
        lwz r2, 0(r3)
        cmpw cr0, r2, r5
        or r2, r6, r6
        beq cr0, LBB_test_5     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r6, 1
        cmpw cr0, r6, r4
        or r2, r6, r6
        blt cr0, LBB_test_3     ; no_exit
LBB_test_5:     ; loopexit
        or r3, r2, r2
        blr

Unfortunately, this is actually worse code, because the register coallescer
is getting confused somehow.  If it were doing its job right, it could turn the
code into this:

_test:
        cmpwi cr0, r4, 0
        bgt cr0, LBB_test_2     ; entry.no_exit_crit_edge
LBB_test_1:     ; entry.loopexit_crit_edge
        li r6, 0
        b LBB_test_5    ; loopexit
LBB_test_2:     ; entry.no_exit_crit_edge
        li r6, 0
LBB_test_3:     ; no_exit
        lwz r2, 0(r3)
        cmpw cr0, r2, r5
        beq cr0, LBB_test_5     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r6, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit
LBB_test_5:     ; loopexit
        or r3, r6, r6
        blr

... which I'll work on next. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23604 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRefactor some code into a function
Chris Lattner [Mon, 3 Oct 2005 01:04:44 +0000 (01:04 +0000)]
Refactor some code into a function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23603 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoThis break is bogus and I have no idea why it was there. Basically it prevents
Chris Lattner [Mon, 3 Oct 2005 00:37:33 +0000 (00:37 +0000)]
This break is bogus and I have no idea why it was there.  Basically it prevents
memoizing code when IV's are used by phinodes outside of loops.  In a simple
example, we were getting this code before (note that r6 and r7 are isomorphic
IV's):

        li r6, 0
        or r7, r6, r6
LBB_test_3:     ; no_exit
        lwz r2, 0(r3)
        cmpw cr0, r2, r5
        or r2, r7, r7
        beq cr0, LBB_test_5     ; loopexit
LBB_test_4:     ; endif
        addi r2, r7, 1
        addi r7, r7, 1
        addi r3, r3, 4
        addi r6, r6, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit

Now we get:

        li r6, 0
LBB_test_3:     ; no_exit
        or r2, r6, r6
        lwz r6, 0(r3)
        cmpw cr0, r6, r5
        beq cr0, LBB_test_6     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r2, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit

this was noticed in em3d.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23602 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agowhen checking if we should move a split edge block outside of a loop,
Chris Lattner [Mon, 3 Oct 2005 00:31:52 +0000 (00:31 +0000)]
when checking if we should move a split edge block outside of a loop,
check the presplit pred, not the post-split pred.  This was causing us
to make the wrong decision in some cases, leaving the critical edge block
in the loop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23601 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoThis member can be const too
Chris Lattner [Mon, 3 Oct 2005 00:21:25 +0000 (00:21 +0000)]
This member can be const too

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23600 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoput the right labels on the data
Chris Lattner [Sun, 2 Oct 2005 21:51:38 +0000 (21:51 +0000)]
put the right labels on the data

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23599 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix a problem where the legalizer would run out of stack space on extremely
Chris Lattner [Sun, 2 Oct 2005 17:49:46 +0000 (17:49 +0000)]
Fix a problem where the legalizer would run out of stack space on extremely
large basic blocks because it was purely recursive.  This switches it to an
iterative/recursive hybrid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23596 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agosilence a bogus warning
Chris Lattner [Sun, 2 Oct 2005 16:30:51 +0000 (16:30 +0000)]
silence a bogus warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23595 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agosilence some warnings
Chris Lattner [Sun, 2 Oct 2005 16:29:36 +0000 (16:29 +0000)]
silence some warnings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23594 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agosilence a warning
Chris Lattner [Sun, 2 Oct 2005 16:27:59 +0000 (16:27 +0000)]
silence a warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23593 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoadd patterns for float binops and fma ops
Chris Lattner [Sun, 2 Oct 2005 07:46:28 +0000 (07:46 +0000)]
add patterns for float binops and fma ops

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23592 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoSort the cpu and features table, so that the alpha backend doesn't fail EVERY
Chris Lattner [Sun, 2 Oct 2005 07:13:52 +0000 (07:13 +0000)]
Sort the cpu and features table, so that the alpha backend doesn't fail EVERY
compile with an assertion that the tables are not sorted!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23591 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd assertions to the trivial scheduler to check that the value types match
Chris Lattner [Sun, 2 Oct 2005 07:10:55 +0000 (07:10 +0000)]
Add assertions to the trivial scheduler to check that the value types match
up between defs and uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23590 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoanother solution to the fsel issue. Instead of having 4 variants, just force
Chris Lattner [Sun, 2 Oct 2005 07:07:49 +0000 (07:07 +0000)]
another solution to the fsel issue.  Instead of having 4 variants, just force
the comparison to be 64-bits.  This is fine because extensions from float
to double are free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23589 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agofsel can take a different FP type for the comparison and for the result. As such
Chris Lattner [Sun, 2 Oct 2005 06:58:23 +0000 (06:58 +0000)]
fsel can take a different FP type for the comparison and for the result.  As such
split the FSEL family into 4 things instead of just two.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23588 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agofix an f32/f64 type mismatch
Chris Lattner [Sun, 2 Oct 2005 06:37:13 +0000 (06:37 +0000)]
fix an f32/f64 type mismatch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23587 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoCodegen CopyFromReg using the regclass that matches the valuetype of the
Chris Lattner [Sun, 2 Oct 2005 06:34:16 +0000 (06:34 +0000)]
Codegen CopyFromReg using the regclass that matches the valuetype of the
destination vreg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23586 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdjust to change in ctor
Chris Lattner [Sun, 2 Oct 2005 06:23:51 +0000 (06:23 +0000)]
Adjust to change in ctor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23585 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoEmit the value type for each register class.
Chris Lattner [Sun, 2 Oct 2005 06:23:37 +0000 (06:23 +0000)]
Emit the value type for each register class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23584 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoExpose the actual valuetype of each register class
Chris Lattner [Sun, 2 Oct 2005 06:23:19 +0000 (06:23 +0000)]
Expose the actual valuetype of each register class

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23583 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoMinor tweak to the branch selector. When emitting a two-way branch, and if
Chris Lattner [Sat, 1 Oct 2005 23:06:26 +0000 (23:06 +0000)]
Minor tweak to the branch selector.  When emitting a two-way branch, and if
we're in a single-mbb loop, make sure to emit the backwards branch as the
conditional branch instead of the uncond branch.  For example, emit this:

LBBl29_z__44:
        stw r9, 0(r15)
        stw r9, 4(r15)
        stw r9, 8(r15)
        stw r9, 12(r15)
        addi r15, r15, 16
        addi r8, r8, 1
        cmpw cr0, r8, r28
        ble cr0, LBBl29_z__44
        b LBBl29_z__48                   *** NOT PART OF LOOP

Instead of:

LBBl29_z__44:
        stw r9, 0(r15)
        stw r9, 4(r15)
        stw r9, 8(r15)
        stw r9, 12(r15)
        addi r15, r15, 16
        addi r8, r8, 1
        cmpw cr0, r8, r28
        bgt cr0, LBBl29_z__48            *** PART OF LOOP!
        b LBBl29_z__44

The former sequence has one fewer dispatch group for the loop body.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23582 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agolike the comment says, enable this
Chris Lattner [Sat, 1 Oct 2005 23:02:40 +0000 (23:02 +0000)]
like the comment says, enable this

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23581 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd some very paranoid checking for operand/result reg class matchup
Chris Lattner [Sat, 1 Oct 2005 07:45:09 +0000 (07:45 +0000)]
Add some very paranoid checking for operand/result reg class matchup
For instructions that define multiple results, use the right regclass
to define the result, not always the rc of result #0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23580 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoFix VC++ warnings.
Jeff Cohen [Sat, 1 Oct 2005 03:57:14 +0000 (03:57 +0000)]
Fix VC++ warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23579 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agofix typo
Chris Lattner [Sat, 1 Oct 2005 02:51:36 +0000 (02:51 +0000)]
fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23578 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoModify the ppc backend to use two register classes for FP: F8RC and F4RC.
Chris Lattner [Sat, 1 Oct 2005 01:35:02 +0000 (01:35 +0000)]
Modify the ppc backend to use two register classes for FP: F8RC and F4RC.
These are used to represent float and double values, and the two regclasses
contain the same physical registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23577 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAnnotate nodes with their addresses if a graph requests it.
Chris Lattner [Sat, 1 Oct 2005 00:19:21 +0000 (00:19 +0000)]
Annotate nodes with their addresses if a graph requests it.

This is Jim's feature implemented so that graphs could 'opt-in' and get
this behavior.  This is currently used by selection dags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23576 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoadd a method
Chris Lattner [Sat, 1 Oct 2005 00:17:07 +0000 (00:17 +0000)]
add a method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23575 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agotypo
Jim Laskey [Sat, 1 Oct 2005 00:08:23 +0000 (00:08 +0000)]
typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23574 91177308-0d34-0410-b5e6-96231b3b80d8

19 years ago1. Simplify the gathering of node groups.
Jim Laskey [Sat, 1 Oct 2005 00:03:07 +0000 (00:03 +0000)]
1. Simplify the gathering of node groups.

2. Printing node groups when displaying nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23573 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoShould be using flag and not chain.
Jim Laskey [Fri, 30 Sep 2005 23:43:37 +0000 (23:43 +0000)]
Should be using flag and not chain.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23572 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRemove some now-dead code.
Nate Begeman [Fri, 30 Sep 2005 21:28:27 +0000 (21:28 +0000)]
Remove some now-dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23571 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agomore specific tests of subtarget stuff
Andrew Lenharth [Fri, 30 Sep 2005 20:30:24 +0000 (20:30 +0000)]
more specific tests of subtarget stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23570 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agosubtarget support for CIX and FIX extentions (the only 2 I care about right now)
Andrew Lenharth [Fri, 30 Sep 2005 20:24:38 +0000 (20:24 +0000)]
subtarget support for CIX and FIX extentions (the only 2 I care about right now)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23569 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoReverting change moving to selection dag graph.
Jim Laskey [Fri, 30 Sep 2005 19:33:41 +0000 (19:33 +0000)]
Reverting change moving to selection dag graph.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23568 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdded allnodes_size for scheduling support.
Jim Laskey [Fri, 30 Sep 2005 19:27:01 +0000 (19:27 +0000)]
Added allnodes_size for scheduling support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23567 91177308-0d34-0410-b5e6-96231b3b80d8

19 years ago1. Made things node-centric (from operand).
Jim Laskey [Fri, 30 Sep 2005 19:15:27 +0000 (19:15 +0000)]
1. Made things node-centric (from operand).

2. Added node groups to handle flagged nodes.

3. Started weaning simple scheduling off existing emitter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23566 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoAdd the node name (thus the address) to node label.
Jim Laskey [Fri, 30 Sep 2005 19:11:53 +0000 (19:11 +0000)]
Add the node name (thus the address) to node label.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23565 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoRename MRegisterDesc -> TargetRegisterDesc for consistency
Chris Lattner [Fri, 30 Sep 2005 17:49:27 +0000 (17:49 +0000)]
Rename MRegisterDesc -> TargetRegisterDesc for consistency

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23564 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoUpdate the discussion of TargetRegisterDesc
Chris Lattner [Fri, 30 Sep 2005 17:46:55 +0000 (17:46 +0000)]
Update the discussion of TargetRegisterDesc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23563 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agoremove some more initializers
Chris Lattner [Fri, 30 Sep 2005 17:41:05 +0000 (17:41 +0000)]
remove some more initializers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23562 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agotrim down the target info structs now that we have a preferred spill register class...
Chris Lattner [Fri, 30 Sep 2005 17:38:36 +0000 (17:38 +0000)]
trim down the target info structs now that we have a preferred spill register class for each callee save register

Why is V9 maintaining these tables manually? ugh!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23561 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agotrim down the target info structs now that we have a preferred spill register class...
Chris Lattner [Fri, 30 Sep 2005 17:35:22 +0000 (17:35 +0000)]
trim down the target info structs now that we have a preferred spill register class for each callee save register

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23560 91177308-0d34-0410-b5e6-96231b3b80d8

19 years agonow that we have a reg class to spill with, get this info from the regclass
Chris Lattner [Fri, 30 Sep 2005 17:19:22 +0000 (17:19 +0000)]
now that we have a reg class to spill with, get this info from the regclass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23559 91177308-0d34-0410-b5e6-96231b3b80d8