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Author SHA1 Message Date
Anton Korobeynikov
61d88967b9 Align stack size to DWORD boundary 
llvm-svn: 30964
 2006-10-14 20:53:35 +00:00
Rafael Espindola
c426cede28 expand ISD::BRCOND 
llvm-svn: 30963
 2006-10-14 17:59:54 +00:00
Rafael Espindola
38c602f658 fix some fp condition codes 
use non trapping comparison instructions

llvm-svn: 30962
 2006-10-14 13:42:53 +00:00
Jim Laskey
1070dfefba Tidy up after truncstore changes. 
llvm-svn: 30961
 2006-10-14 12:14:27 +00:00
Evan Cheng
078a38abd7 One cyclic dag a day is good for ya... 
llvm-svn: 30960
 2006-10-14 08:35:02 +00:00
Evan Cheng
bfd74c6d9c Debug tweak. 
llvm-svn: 30959
 2006-10-14 08:34:06 +00:00
Evan Cheng
6c8de88f88 Corrected load folding check. We need to start from the root of the sub-dag 
being matched and ensure there isn't a non-direct path to the load (i.e. a
path that goes out of the sub-dag.)

llvm-svn: 30958
 2006-10-14 08:33:25 +00:00
Evan Cheng
c8b9d15614 Start checking from the root of the matched sub-tree. 
llvm-svn: 30957
 2006-10-14 08:30:53 +00:00
Evan Cheng
513dc7ed5f When checking if a load can be folded, we check if there is any non-direct 
way to reach the load via any nodes that would be folded. Start from the
root of the matched sub-tree.

llvm-svn: 30956
 2006-10-14 08:30:15 +00:00
Chris Lattner
08aa96b824 Make sure that the node returned by SimplifySetCC is added to the worklist 
so that it can be deleted if unused.

llvm-svn: 30955
 2006-10-14 03:52:46 +00:00
Chris Lattner
3fbcd8519e testcase for recent dag combiner patch. Before the entry bb was: 
_test:
        stwu r1, -80(r1)
        stw r1, 76(r1)
        mflr r11
        stw r11, 88(r1)
        rlwinm r2, r4, 0, 30, 31
        cmplwi cr7, r2, 2
        mfcr r2
        rlwinm r2, r2, 30, 31, 31
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

after it is:

_test:
        stwu r1, -80(r1)
        stw r1, 76(r1)
        mflr r11
        stw r11, 88(r1)
        rlwinm r2, r4, 0, 30, 31
        cmplwi cr0, r2, 2
        bgt cr0, LBB1_2 ;UnifiedReturnBlock

llvm-svn: 30954
 2006-10-14 03:40:02 +00:00
Chris Lattner
a515f322f3 fold setcc of a setcc. 
llvm-svn: 30953
 2006-10-14 01:02:29 +00:00
Chris Lattner
25ad62d132 When SimplifySetCC was moved to the DAGCombiner, it was never removed from 
SelectionDAG and it has since bitrotted.  Remove the copy from SelectionDAG.
Next, remove the constant folding piece of DAGCombiner::SimplifySetCC into
a new FoldSetCC method which can be used by getNode() and SimplifySetCC.

This fixes obscure bugs.

llvm-svn: 30952
 2006-10-14 00:41:01 +00:00
Chris Lattner
c4be6ee8b8 disable this pass for now, it's causing issues 
llvm-svn: 30951
 2006-10-14 00:30:06 +00:00
Chris Lattner
1c35d27fc4 falling off the end of a function is ok with an unreachable instruction. 
llvm-svn: 30950
 2006-10-14 00:21:48 +00:00
Chris Lattner
cfa6a33663 testcase for recent selectiondag patch 
llvm-svn: 30949
 2006-10-13 23:54:16 +00:00
Jim Laskey
bf50140aac Reduce the workload by not adding chain users to work list. 
llvm-svn: 30948
 2006-10-13 23:32:28 +00:00
Chris Lattner
9b1878a28c Fix a bug where we incorrectly turned '(X & 0) == 0' into '(X & 0) >> -1', 
which is undefined.  "0" isn't a power of 2.

llvm-svn: 30947
 2006-10-13 22:46:18 +00:00
Chris Lattner
b90d66b7da implement branch inspection/modification methods. 
llvm-svn: 30946
 2006-10-13 21:21:17 +00:00
Evan Cheng
fe5bb5dbe6 Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode. 
llvm-svn: 30945
 2006-10-13 21:14:26 +00:00
Chris Lattner
b441d8e8ce it is easier to implement these when they are virtual 
llvm-svn: 30944
 2006-10-13 21:02:27 +00:00
Chris Lattner
520bf168f5 allow branch reversal to fail 
llvm-svn: 30943
 2006-10-13 20:59:31 +00:00
Bill Wendling
85f53a4427 Corrected formatting. 
llvm-svn: 30942
 2006-10-13 20:53:50 +00:00
Chris Lattner
87d16e0ed9 add the branch folding pass as a late cleanup pass for all targets. For now 
it just deletes empty MBB's.  Soon it will do more :)

llvm-svn: 30941
 2006-10-13 20:45:56 +00:00
Chris Lattner
f8eaaded24 replace the existing branch inspection/modification APIs with something more 
useful and general.

llvm-svn: 30940
 2006-10-13 20:44:01 +00:00
Chris Lattner
ae19ea4b2a disable some objectionable code, maybe we can bring this pass to life 
llvm-svn: 30939
 2006-10-13 20:43:10 +00:00
Chris Lattner
bea7a9de50 remove some dead code 
llvm-svn: 30938
 2006-10-13 20:40:42 +00:00
Chris Lattner
b22754853b add note 
llvm-svn: 30937
 2006-10-13 20:20:58 +00:00
Chris Lattner
14f18d4896 set isBarrier correctly 
llvm-svn: 30936
 2006-10-13 19:10:34 +00:00
Chris Lattner
a3f4e611a4 Correctly handle instruction separators. 
llvm-svn: 30935
 2006-10-13 17:56:02 +00:00
Chris Lattner
63ec35db20 Expose method and ivars for measuring inline asm length properly. 
llvm-svn: 30934
 2006-10-13 17:50:07 +00:00
Andrew Lenharth
254a2fbcd0 Move some warnings to debug mode. 
llvm-svn: 30933
 2006-10-13 17:38:22 +00:00
Rafael Espindola
1f85e7a2a1 add FNEGS and FNEGD 
llvm-svn: 30932
 2006-10-13 17:37:35 +00:00
Chris Lattner
5cd4ac0a79 Fix another dtor issue. The function local statics in this function were 
being destroyed at inconvenient times.  Switch to using non-local ManagedStatic
objects, which actually also speeds up ConstRules::get.

llvm-svn: 30931
 2006-10-13 17:22:21 +00:00
Rafael Espindola
042e61af25 add SBCS and SUBS 
llvm-svn: 30930
 2006-10-13 17:19:20 +00:00
Rafael Espindola
24d7976d1d implement calls to functions that return long 
llvm-svn: 30929
 2006-10-13 16:47:22 +00:00
Rafael Espindola
bd50a4d757 implement unordered floating point compares 
llvm-svn: 30928
 2006-10-13 13:14:59 +00:00
Jim Laskey
a053c74b99 Workaround for templates 
llvm-svn: 30927
 2006-10-13 13:02:19 +00:00
Jim Laskey
20feec042a Clean up dump. 
llvm-svn: 30926
 2006-10-13 13:01:34 +00:00
Chris Lattner
9476464f86 avoid a ctor/dtor issue with the ProgramName global. 
llvm-svn: 30925
 2006-10-13 00:06:24 +00:00
Chris Lattner
cf5bfb0e80 simplify trivial function 
llvm-svn: 30924
 2006-10-12 23:50:28 +00:00
Evan Cheng
c7283044d1 Really remove dead nodes from isel queue. 
llvm-svn: 30923
 2006-10-12 23:18:52 +00:00
Chris Lattner
f48558b3b6 shrink anon-ns and mark stuff static. No functionality changes 
llvm-svn: 30922
 2006-10-12 22:09:17 +00:00
Chris Lattner
9777da8fb7 add a note 
llvm-svn: 30921
 2006-10-12 22:01:26 +00:00
Chris Lattner
70444d5663 Lower X%C into X/C+stuff. This allows the 'division by a constant' logic to 
apply to rems as well as divs.  This fixes PR945 and speeds up ReedSolomon
from 14.57s to 10.90s (which is now faster than gcc).

It compiles CodeGen/X86/rem.ll into:

_test1:
        subl $4, %esp
        movl %esi, (%esp)
        movl $2155905153, %ecx
        movl 8(%esp), %esi
        movl %esi, %eax
        imull %ecx
        addl %esi, %edx
        movl %edx, %eax
        shrl $31, %eax
        sarl $7, %edx
        addl %eax, %edx
        imull $255, %edx, %eax
        subl %eax, %esi
        movl %esi, %eax
        movl (%esp), %esi
        addl $4, %esp
        ret
_test2:
        movl 4(%esp), %eax
        movl %eax, %ecx
        sarl $31, %ecx
        shrl $24, %ecx
        addl %eax, %ecx
        andl $4294967040, %ecx
        subl %ecx, %eax
        ret
_test3:
        subl $4, %esp
        movl %esi, (%esp)
        movl $2155905153, %ecx
        movl 8(%esp), %esi
        movl %esi, %eax
        mull %ecx
        shrl $7, %edx
        imull $255, %edx, %eax
        subl %eax, %esi
        movl %esi, %eax
        movl (%esp), %esi
        addl $4, %esp
        ret

instead of div/idiv instructions.

llvm-svn: 30920
 2006-10-12 20:58:32 +00:00
Chris Lattner
ae912d4d65 new testcase 
llvm-svn: 30919
 2006-10-12 20:56:15 +00:00
Evan Cheng
cd6e1ecd4f Add another cyclic dag test case. 
llvm-svn: 30918
 2006-10-12 20:38:45 +00:00
Evan Cheng
5ff49d9410 Use RemoveDeadNode to kill dead node. 
llvm-svn: 30917
 2006-10-12 20:35:19 +00:00
Evan Cheng
61afb767eb Add RemoveDeadNode to remove a dead node and its (potentially) dead operands. 
llvm-svn: 30916
 2006-10-12 20:34:05 +00:00
Chris Lattner
e38ce54cc9 add a minor dag combine noticed when looking at PR945 
llvm-svn: 30915
 2006-10-12 20:23:19 +00:00