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3113 Commits

Author SHA1 Message Date
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
4a84ad7a2b 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 :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30941 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 20:45:56 +00:00
Chris Lattner
eb15eeec39 disable some objectionable code, maybe we can bring this pass to life 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30939 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 20:43:10 +00:00
Jim Laskey
339ec4cb15 Workaround for templates 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30927 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 13:02:19 +00:00
Jim Laskey
774f85465e Clean up dump. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30926 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 13:01:34 +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
Chris Lattner
6ec3626be4 restore my previous patch, now that the X86 backend bug has been fixed: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061009/038518.html


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30906 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 17:45:38 +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
Evan Cheng
b870100f2a Backing out Chris' last commit. It's breaking llvm-gcc bootstrapping. 
It's turning:
        movl -24(%ebp), %esp
        subl $16, %esp
        movl -24(%ebp), %ecx
into
        movl -24(%ebp), %esp
        subl $16, %esp
        movl %esp, (%esp)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30902 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 08:00:47 +00:00
Chris Lattner
f183cabba8 If we see a load from a stack slot into a physreg, consider it as providing 
the stack slot.  This fixes PR943.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30898 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 02:34:07 +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
0336fdba85 If a target uses a GOT, put it in the jt data section, not the text 
section.  This will fix alpha when Andrew implements
AlphaTargetMachine::getTargetLowering().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30779 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 22:50:56 +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
db3ea6754b print labels even if a MBB doesn't have a corresponding LLVM BB, just don't 
print the LLVM BB label.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30775 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 21:28:17 +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
Chris Lattner
5504602836 MachineBasicBlock::splice was incorrectly updating parent pointers on 
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30760 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-06 01:12:44 +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
Chris Lattner
9c78ecb511 Don't crash if an MBB doesn't have an LLVM BB 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30757 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 21:40:14 +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
Chris Lattner
e08d6e915e Emit pic jumptables to the same section that the function is emitted to, 
allowing label differences to work.  This fixes CodeGen/X86/pic_jumptable.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30744 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 03:13:28 +00:00
Chris Lattner
1da31ee472 Pass the MachineFunction into EmitJumpTableInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30742 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 03:01:21 +00:00
Chris Lattner
52f0670470 move getSectionForFunction to AsmPrinter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30736 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-05 02:42:47 +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
Jim Laskey
0c0feb9d5f More long term solution 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30720 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-04 10:40:15 +00:00
Jim Laskey
0f77fe5ea6 Work around for some problems with templates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30715 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-04 01:43:13 +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
Chris Lattner
faf1daeb92 Use $( $| $) to represent alternatives in asm blocks instead of {|}. This 
is needed to support targets where {|} aren't special symbols.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30712 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-03 23:27:09 +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
Chris Lattner
f28bbda2c6 Bugfixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30709 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-03 20:19:23 +00:00