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1317 Commits

Author SHA1 Message Date
Chris Lattner
30f73e78bd Make sure that the node returned by SimplifySetCC is added to the worklist 
so that it can be deleted if unused.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30955 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-14 03:52:46 +00:00
Chris Lattner
8ac9d0ebde fold setcc of a setcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30953 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-14 01:02:29 +00:00
Chris Lattner
51dabfb283 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30952 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-14 00:41:01 +00:00
Jim Laskey
274062c172 Reduce the workload by not adding chain users to work list. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30948 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 23:32:28 +00:00
Chris Lattner
dc78cbf457 Fix a bug where we incorrectly turned '(X & 0) == 0' into '(X & 0) >> -1', 
which is undefined.  "0" isn't a power of 2.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30947 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 22:46:18 +00:00
Evan Cheng
8b2794aeff Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30945 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 21:14:26 +00:00
Chris Lattner
26d2990e03 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30920 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 20:58:32 +00:00
Evan Cheng
130a6471b9 Add RemoveDeadNode to remove a dead node and its (potentially) dead operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30916 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 20:34:05 +00:00
Chris Lattner
3657ffe037 add a minor dag combine noticed when looking at PR945 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30915 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 20:23:19 +00:00
Jim Laskey
3ad175bd70 D'oh - need to use the rigth kind of store. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30903 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 15:22:24 +00:00
Jim Laskey
7aed46c25b Alias analysis of TRUNCSTORE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30889 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 18:55:16 +00:00
Jim Laskey
2d84c4c7b3 Typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30884 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 17:52:19 +00:00
Jim Laskey
c2b19f3449 Handle aliasing of loadext. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30883 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 17:47:52 +00:00
Jim Laskey
7ca56aff22 Fix regression in combiner alias analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30880 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 13:47:09 +00:00
Evan Cheng
2e49f090f9 Naming consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30878 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 07:10:22 +00:00
Andrew Lenharth
82c3d8f81a Jimptables working again on alpha. 
As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30873 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 04:29:42 +00:00
Chris Lattner
755480681c add two helper methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30869 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 03:58:02 +00:00
Evan Cheng
9629abac79 FindModifiedNodeSlot needs to add LoadSDNode ivars to create proper SelectionDAGCSEMap ID. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30866 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 01:47:58 +00:00
Evan Cheng
45aeccc1fd Also update getNodeLabel for LoadSDNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30861 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-10 20:11:26 +00:00
Evan Cheng
0ac1c6ad9a SDNode::dump should also print out extension type and VT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30860 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-10 20:05:10 +00:00
Chris Lattner
55b5708b6b Fix another bug in extload promotion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30857 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-10 18:54:19 +00:00
Evan Cheng
62f2a3c7aa Fix a bug introduced by my LOAD/LOADX changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30853 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-10 07:51:21 +00:00
Evan Cheng
466685d41a Reflects ISD::LOAD / ISD::LOADX / LoadSDNode changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30844 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-09 20:57:25 +00:00
Chris Lattner
6270f686b3 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30821 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-08 22:57:01 +00:00
Jim Laskey
7138234baf Combiner alias analysis passes Multisource (release-asserts.) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30818 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-07 23:37:56 +00:00
Chris Lattner
ed83a7019b Fix a bug legalizing zero-extending i64 loads into 32-bit loads. The bottom 
part was always forced to be sextload, even when we needed an zextload.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30782 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-07 00:58:36 +00:00
Chris Lattner
cf9668f23d initialize ivar 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30780 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 22:52:08 +00:00
Chris Lattner
e0cfc8b2f2 jump tables handle pic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30776 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 22:32:29 +00:00
Chris Lattner
4bdd2753db Fix a miscompilation of: 
long long foo(long long X) {
  return (long long)(signed char)(int)X;
}

Instead of:

_foo:
        extsb r2, r4
        srawi r3, r4, 31
        mr r4, r2
        blr

we now produce:

_foo:
        extsb r4, r4
        srawi r3, r4, 31
        blr

This fixes a miscompilation in ConstantFolding.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30768 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 17:34:12 +00:00
Evan Cheng
786225adf0 Make use of getStore(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30759 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 23:01:46 +00:00
Evan Cheng
ad071e1cd1 Add getStore() helper function to create ISD::STORE nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30758 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 22:57:11 +00:00
Jim Laskey
bc588b8bbf Alias analysis code clean ups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30753 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 15:07:25 +00:00
Evan Cheng
693163e74d Fix some typos that can cause a flag value to have more than one use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30727 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-04 22:23:53 +00:00
Jim Laskey
6ff23e5e84 More extensive alias analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30721 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-04 16:53:27 +00:00
Evan Cheng
c548428c5d Combine ISD::EXTLOAD, ISD::SEXTLOAD, ISD::ZEXTLOAD into ISD::LOADX. Add an 
extra operand to LOADX to specify the exact value extension type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30714 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-04 00:56:09 +00:00
Evan Cheng
bf497a3a68 Fix an obvious typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30711 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-03 23:08:27 +00:00
Jim Laskey
01078fb7ec Debugging kruft 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30688 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-02 13:01:17 +00:00
Jim Laskey
ec20402c90 Add ability to annotate (color) nodes in a viewGraph. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30686 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-02 12:26:53 +00:00
Chris Lattner
57f9a43c64 refactor critical edge breaking out into the SplitCritEdgesForPHIConstants method. 
This is a baby step towards fixing PR925.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30643 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-28 06:17:10 +00:00
Andrew Lenharth
16113431e8 Comments on JumpTableness 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30615 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 20:02:30 +00:00
Jim Laskey
bb1518585b Load chain check is not needed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30613 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 17:44:58 +00:00
Jim Laskey
79597d2af6 Chain can be any operand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30611 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 09:32:41 +00:00
Jim Laskey
3dd1170616 Wrong size for load 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30610 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 08:14:06 +00:00
Jim Laskey
172585b3aa Can't move a load node if it's chain is not used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30609 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 07:37:42 +00:00
Jim Laskey
14fbcbfa2b Accidental enable of bad code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30601 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-25 21:11:32 +00:00
Jim Laskey
288af5e740 Fix chain dropping in load and drop unused stores in ret blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30600 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-25 19:32:58 +00:00
Jim Laskey
279f053eae Core antialiasing for load and store. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30597 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-25 16:29:54 +00:00
Andrew Lenharth
beec30eaf3 Add support for other relocation bases to jump tables, as well as custom asm directives 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30593 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-24 19:45:58 +00:00
Evan Cheng
2ae5b87996 PIC jump table entries are always 32-bit. This fixes PIC jump table support on X86-64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30590 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-24 05:22:38 +00:00
Evan Cheng
2adffa1f66 Make it work for DAG combine of multi-value nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30573 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-21 19:04:05 +00:00