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247 Commits

Author SHA1 Message Date
Evan Cheng
6878378390 Don't attempt expensive pre-/post- indexed dag combine if target does not support them. 
llvm-svn: 31598
 2006-11-09 19:10:46 +00:00
Evan Cheng
b15000736c Rename ISD::MemOpAddrMode to ISD::MemIndexedMode 
llvm-svn: 31595
 2006-11-09 17:55:04 +00:00
Evan Cheng
b58e06bc9e getPostIndexedAddressParts change: passes in load/store instead of its loaded / stored VT. 
llvm-svn: 31584
 2006-11-09 04:29:46 +00:00
Evan Cheng
85e54223cd Match more post-indexed ops. 
llvm-svn: 31569
 2006-11-08 20:27:27 +00:00
Jim Laskey
61feeb90f9 Remove redundant <cmath>. 
llvm-svn: 31561
 2006-11-08 19:16:44 +00:00
Evan Cheng
0303cb9b33 - When performing pre-/post- indexed load/store transformation, do not worry 
about whether the new base ptr would be live below the load/store. Let two
  address pass split it back to non-indexed ops.
- Minor tweaks / fixes.

llvm-svn: 31544
 2006-11-08 08:30:28 +00:00
Evan Cheng
6072435756 Fixed a minor bug preventing some pre-indexed load / store transformation. 
llvm-svn: 31543
 2006-11-08 06:56:05 +00:00
Evan Cheng
d48f7dd250 Fix a obscure post-indexed load / store dag combine bug. 
llvm-svn: 31537
 2006-11-08 02:38:55 +00:00
Evan Cheng
60c6846d21 Add post-indexed load / store transformations. 
llvm-svn: 31498
 2006-11-07 09:03:05 +00:00
Evan Cheng
eb99bd736a Add comment. 
llvm-svn: 31473
 2006-11-06 08:14:30 +00:00
Jeff Cohen
7d6f3db3e2 Unbreak VC++ build. 
llvm-svn: 31464
 2006-11-05 19:31:28 +00:00
Evan Cheng
33157700d9 Added pre-indexed store support. 
llvm-svn: 31459
 2006-11-05 09:31:14 +00:00
Evan Cheng
1dfd26a151 Rename 
llvm-svn: 31413
 2006-11-03 07:21:16 +00:00
Reid Spencer
52f958741a Remove dead variable. Fix 80 column violations. 
llvm-svn: 31412
 2006-11-03 03:30:34 +00:00
Evan Cheng
357017f4a9 Added DAG combiner transformation to generate pre-indexed loads. 
llvm-svn: 31410
 2006-11-03 03:06:21 +00:00
Reid Spencer
de46e48420 For PR786: 
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.

llvm-svn: 31380
 2006-11-02 20:25:50 +00:00
Jim Laskey
55e4dcad36 Add option for controlling inclusion of global AA. 
llvm-svn: 31040
 2006-10-18 19:08:31 +00:00
Jim Laskey
a15b0ebb5e Use global info for alias analysis. 
llvm-svn: 31035
 2006-10-18 12:29:57 +00:00
Chris Lattner
327b88b102 Fix CodeGen/PowerPC/2006-10-17-brcc-miscompile.ll 
llvm-svn: 31019
 2006-10-17 21:24:15 +00:00
Jim Laskey
e7d2c24a7d Make it simplier to dump DAGs while in DAGCombiner. Remove a nasty optimization. 
llvm-svn: 31009
 2006-10-17 19:33:52 +00:00
Evan Cheng
1e3a39cd08 Make sure operand does have size and element type operands. 
llvm-svn: 30999
 2006-10-17 17:06:35 +00:00
Evan Cheng
f3ae00a64a Be careful when looking through a vbit_convert. Optimizing this: 
(vector_shuffle
  (vbitconvert (vbuildvector (copyfromreg v4f32), 1, v4f32), 4, f32),
  (undef, undef, undef, undef), (0, 0, 0, 0), 4, f32)
to the
  vbitconvert
is a very bad idea.

llvm-svn: 30989
 2006-10-16 22:49:37 +00:00
Jim Laskey
dcb2b83886 Pass AliasAnalysis thru to DAGCombiner. 
llvm-svn: 30984
 2006-10-16 20:52:31 +00:00
Jim Laskey
3bf4f3bd60 Tidy up after truncstore changes. 
llvm-svn: 30961
 2006-10-14 12:14:27 +00:00
Chris Lattner
6a1b2de8c4 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
0626bd2fbc fold setcc of a setcc. 
llvm-svn: 30953
 2006-10-14 01:02:29 +00:00
Chris Lattner
bd9acad805 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
Jim Laskey
dcf983ce41 Reduce the workload by not adding chain users to work list. 
llvm-svn: 30948
 2006-10-13 23:32:28 +00:00
Evan Cheng
ab51cf2e78 Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode. 
llvm-svn: 30945
 2006-10-13 21:14:26 +00:00
Chris Lattner
d0620d2773 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
2e33fb453b add a minor dag combine noticed when looking at PR945 
llvm-svn: 30915
 2006-10-12 20:23:19 +00:00
Jim Laskey
df2ccc395e D'oh - need to use the rigth kind of store. 
llvm-svn: 30903
 2006-10-12 15:22:24 +00:00
Jim Laskey
a13b9c7aa4 Alias analysis of TRUNCSTORE. 
llvm-svn: 30889
 2006-10-11 18:55:16 +00:00
Jim Laskey
0f7c328ae7 Handle aliasing of loadext. 
llvm-svn: 30883
 2006-10-11 17:47:52 +00:00
Jim Laskey
08edf332ed Fix regression in combiner alias analysis. 
llvm-svn: 30880
 2006-10-11 13:47:09 +00:00
Evan Cheng
d35734bd1f Naming consistency. 
llvm-svn: 30878
 2006-10-11 07:10:22 +00:00
Evan Cheng
e71fe34d75 Reflects ISD::LOAD / ISD::LOADX / LoadSDNode changes. 
llvm-svn: 30844
 2006-10-09 20:57:25 +00:00
Chris Lattner
5ab6d8b3fc Eliminate more token factors by taking advantage of transitivity: 
if TF depends on A and B, and A depends on B, TF just needs to depend on
A.  With Jim's alias-analysis stuff enabled, this compiles the testcase in
PR892 into:

__Z4test3Val:
        subl $44, %esp
        call L__Z3foov$stub
        movl %edx, 28(%esp)
        movl %eax, 32(%esp)
        movl %eax, 24(%esp)
        movl %edx, 36(%esp)
        movl 52(%esp), %ecx
        movl %ecx, 4(%esp)
        movl %eax, 8(%esp)
        movl %edx, 12(%esp)
        movl 48(%esp), %eax
        movl %eax, (%esp)
        call L__Z3bar3ValS_$stub
        addl $44, %esp
        ret

instead of:

__Z4test3Val:
        subl $44, %esp
        call L__Z3foov$stub
        movl %eax, 24(%esp)
        movl %edx, 28(%esp)
        movl 24(%esp), %eax
        movl %eax, 32(%esp)
        movl 28(%esp), %eax
        movl %eax, 36(%esp)
        movl 32(%esp), %eax
        movl 36(%esp), %ecx
        movl 52(%esp), %edx
        movl %edx, 4(%esp)
        movl %eax, 8(%esp)
        movl %ecx, 12(%esp)
        movl 48(%esp), %eax
        movl %eax, (%esp)
        call L__Z3bar3ValS_$stub
        addl $44, %esp
        ret

llvm-svn: 30821
 2006-10-08 22:57:01 +00:00
Jim Laskey
0463e08005 Combiner alias analysis passes Multisource (release-asserts.) 
llvm-svn: 30818
 2006-10-07 23:37:56 +00:00
Evan Cheng
df9ac47e5e Make use of getStore(). 
llvm-svn: 30759
 2006-10-05 23:01:46 +00:00
Jim Laskey
6549d22ef9 Alias analysis code clean ups. 
llvm-svn: 30753
 2006-10-05 15:07:25 +00:00
Jim Laskey
708d0db2d8 More extensive alias analysis. 
llvm-svn: 30721
 2006-10-04 16:53:27 +00:00
Evan Cheng
5d9fd977d3 Combine ISD::EXTLOAD, ISD::SEXTLOAD, ISD::ZEXTLOAD into ISD::LOADX. Add an 
extra operand to LOADX to specify the exact value extension type.

llvm-svn: 30714
 2006-10-04 00:56:09 +00:00
Jim Laskey
60832693a7 Load chain check is not needed 
llvm-svn: 30613
 2006-09-26 17:44:58 +00:00
Jim Laskey
dde51671e5 Chain can be any operand 
llvm-svn: 30611
 2006-09-26 09:32:41 +00:00
Jim Laskey
5f3e0af9d0 Wrong size for load 
llvm-svn: 30610
 2006-09-26 08:14:06 +00:00
Jim Laskey
b4a864d533 Can't move a load node if it's chain is not used. 
llvm-svn: 30609
 2006-09-26 07:37:42 +00:00
Jim Laskey
7aa0638aa9 Accidental enable of bad code 
llvm-svn: 30601
 2006-09-25 21:11:32 +00:00
Jim Laskey
b5534e5c28 Fix chain dropping in load and drop unused stores in ret blocks. 
llvm-svn: 30600
 2006-09-25 19:32:58 +00:00
Jim Laskey
d07be232ba Core antialiasing for load and store. 
llvm-svn: 30597
 2006-09-25 16:29:54 +00:00