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949 Commits

Author SHA1 Message Date
Christopher Lamb
8245510ae0 Teach TableGen about the new vector types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40513 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 06:41:18 +00:00
Dan Gohman
a6a1ab3d28 A minor simplication in the generated code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40479 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 22:58:00 +00:00
Evan Cheng
102dc195b6 No need for noResults anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40075 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 00:21:23 +00:00
Evan Cheng
64d80e3387 Change instruction description to split OperandList into OutOperandList and 
InOperandList. This gives one piece of important information: # of results
produced by an instruction.
An example of the change:
def ADD32rr  : I<0x01, MRMDestReg, (ops GR32:$dst, GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;
=>
def ADD32rr  : I<0x01, MRMDestReg, (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40033 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-19 01:14:50 +00:00
Chris Lattner
ad8c531e20 Work around a bogus gcc 4.2 warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39993 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-18 04:51:57 +00:00
Dan Gohman
3bf6e183d5 Eliminate an unused parameter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39828 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-13 20:16:50 +00:00
Evan Cheng
88cc092ca5 Try committing again. Add OptionalDefOperand. Remove clobbersPred. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38498 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 18:05:01 +00:00
Evan Cheng
c419bd3396 ImmutablePredicateOperand is no more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37963 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-06 23:23:38 +00:00
Rafael Espindola
1aa7efbd2c Add the byval attribute 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37940 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-06 10:57:03 +00:00
Evan Cheng
a955939ca2 Refactor code to add initial support for OptionalDefOperand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37933 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-06 01:05:26 +00:00
Evan Cheng
7774be4a74 Teach DAGISelEmitter about zero_reg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37900 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-05 07:19:45 +00:00
Evan Cheng
8012b077dd Instructions with ImmutablePredicateOperand aren't really predicable since their predicates are fixed at isel time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37899 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-05 07:19:29 +00:00
John Criswell
e644ef7b09 Convert .cvsignore files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37801 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-29 16:35:07 +00:00
Evan Cheng
5e4f292e53 One additional field in TargetRegisterDesc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37760 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-27 17:09:34 +00:00
Evan Cheng
c4f2fe0694 Add immediate sub-registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37738 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-26 20:59:16 +00:00
Dan Gohman
d45eddd214 Revert the earlier change that removed the M_REMATERIALIZABLE machine 
instruction flag, and use the flag along with a virtual member function
hook for targets to override if there are instructions that are only
trivially rematerializable with specific operands (i.e. constant pool
loads).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37728 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-26 00:48:07 +00:00
Dan Gohman
9a0930dbd9 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37727 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-26 00:43:18 +00:00
Chris Lattner
20c2b35c2f silence warning when assertions are disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37654 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-19 06:40:46 +00:00
Dan Gohman
82a87a0172 Replace M_REMATERIALIZIBLE and the newly-added isOtherReMaterializableLoad 
with a general target hook to identify rematerializable instructions. Some
instructions are only rematerializable with specific operands, such as loads
from constant pools, while others are always rematerializable. This hook
allows both to be identified as being rematerializable with the same
mechanism.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37644 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-19 01:48:05 +00:00
Evan Cheng
eaa91b0a1f Replace TargetInstrInfo::CanBeDuplicated() with a M_NOT_DUPLICABLE bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37643 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-19 01:26:51 +00:00
Christopher Lamb
a321125e8b Add support to tablegen for specifying subregister classes on a per register class basis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37572 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-13 22:20:15 +00:00
Evan Cheng
b5c1c9c8e3 Add clobbersPred - instruction that clobbers condition code / register which are used to predicate instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37465 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 10:14:55 +00:00
Bill Wendling
851879c4cf Patches by Chuck Rose to unbreak V Studio builds. 
Thanks Chuck!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37428 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 23:52:59 +00:00
Dan Gohman
b9daee9ece Remove the operator<< for MVT::ValueType in preparation for MVT::ValueType 
being changed from an enum to an integer type, which can't have a custom
operator<< overload.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37412 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 16:11:03 +00:00
Reid Spencer
84c614d1ac The Intrinsic::getDeclaration function's Tys parameter only contains the 
types of the iAny types involved in the overloaded intrinsic. Thus, we
can't use the argument number as the index but have to count them separately
in order to index Tys correctly. This patch rectifies this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37296 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 19:30:31 +00:00
Evan Cheng
5127ce09a4 Rename M_PREDICATED to M_PREDICABLE; opcode can be specified isPredicable without having a PredicateOperand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37116 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 20:45:24 +00:00
Chris Lattner
4ef9b11100 Fix CodeGen/PowerPC/2007-05-14-InlineAsmSelectCrash.ll, the other recent 
patches are also needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37070 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:36:44 +00:00
Evan Cheng
30d15757e3 Added \!con(a,b) syntax to concatnate two dag fragments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37063 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:23:24 +00:00
Evan Cheng
3ab6dcfc54 Mark all (not just the first) predicate operand M_PREDICATE_OPERAND. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37061 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:20:36 +00:00
Evan Cheng
39376d0843 PredicateOperand related bug fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37060 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:19:51 +00:00
Evan Cheng
59039632e1 If a PredicateOperand has an empty ExecuteAlways field, treat it as if a normal operand for isel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36946 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-08 21:04:07 +00:00
Bill Wendling
4222d806fa Add an "implies" field to features. This indicates that, if the current 
feature is set, then the features in the implied list should be set also.
The opposite is also enforced: if a feature in the implied list isn't set,
then the feature that owns that implies list shouldn't be set either.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36756 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-04 20:38:40 +00:00
Nate Begeman
6f7c8ffd9a A bit of feedback from Chris that I missed; error rather than asserting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36619 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 06:08:36 +00:00
Nate Begeman
7bf1c272ab llvm bug #1350, parts 1, 2, and 3. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36618 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 05:57:02 +00:00
Dan Gohman
01929c0482 Update a comment to reflect recent changes in the type system. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36486 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-26 19:43:14 +00:00
Lauro Ramos Venancio
195c6c298a bugfix: remember that ResNode was declared. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36477 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-26 17:03:22 +00:00
Christopher Lamb
8dadf6b13a Fix generation of certain scheduler itineraries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36338 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-22 09:04:24 +00:00
Evan Cheng
4fc4fab856 Bug fix; add super-registers sets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36296 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-21 00:55:29 +00:00
Lauro Ramos Venancio
b3a0417cad Implement "general dynamic", "initial exec" and "local exec" TLS models for 
X86 32 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36283 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-20 21:38:10 +00:00
Evan Cheng
3cafbf7e5f Add sub-registers sets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36278 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-20 21:13:46 +00:00
Reid Spencer
2db15e2b42 For PR1328: 
Don't assert everytime an intrinsic name isn't recognized. Instead, make
the assert optional when callin getIntrinsicID(). This allows the assembler
to handle invalid intrinsic names gracefully.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36120 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-16 06:54:34 +00:00
Reid Spencer
c4de3dec62 For PR1297: 
Implement code generation for overloaded intrinsic functions. The basic
difference is that "actual" argument types must be provided when
constructing intrinsic names and types. Also, for recognition, only the
prefix is examined. If it matches, the suffix is assumed to match. The
suffix is checked by the Verifier, however.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35539 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-01 07:20:02 +00:00
Bill Wendling
eebc8a1bc5 Add support for the v1i64 type. This makes better code for this: 
#include <mmintrin.h>

extern __m64 C;

void baz(__v2si *A, __v2si *B)
{
  *A = C;
  _mm_empty();
}

We get this:

_baz:
        call "L1$pb"
"L1$pb":
        popl %eax
        movl L_C$non_lazy_ptr-"L1$pb"(%eax), %eax
        movq (%eax), %mm0
        movl 4(%esp), %eax
        movq %mm0, (%eax)
        emms
        ret

GCC gives us this:

_baz:
        pushl   %ebx
        call    L3
"L00000000001$pb":
L3:
        popl    %ebx
        subl    $8, %esp
        movl    L_C$non_lazy_ptr-"L00000000001$pb"(%ebx), %eax
        movl    (%eax), %edx
        movl    4(%eax), %ecx
        movl    16(%esp), %eax
        movl    %edx, (%eax)
        movl    %ecx, 4(%eax)
        emms
        addl    $8, %esp
        popl    %ebx
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35351 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-26 07:53:08 +00:00
Evan Cheng
04677a3b49 Recognize target instruction flag 'isReMaterializable'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35159 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 06:20:37 +00:00
Anton Korobeynikov
d0b82b301d Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35008 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 16:25:09 +00:00
Anton Korobeynikov
1d9baccc9b Use new SDIselParamAttr enumeration. This removes "magick" constants 
from formal attributes' flags processing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34963 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-06 08:12:33 +00:00
Chris Lattner
e3bab80e33 rename some CCActions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34724 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 05:29:06 +00:00
Chris Lattner
2092c8ac9c implement CCPromoteToType 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34720 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 04:43:48 +00:00
Chris Lattner
50d456539d reapply 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34697 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 22:08:27 +00:00
Chris Lattner
88ee2a18a7 *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34696 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 22:05:51 +00:00
Evan Cheng
53c9b3f68c Backing out 
CodeGenTarget.cpp updated: 1.82 -> 1.83
Record.cpp updated: 1.55 -> 1.56
Record.h updated: 1.59 -> 1.60
TableGen.cpp updated: 1.47 -> 1.48
It's missing CallingConvEmitter.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34693 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 21:44:08 +00:00
Chris Lattner
798dc7adb4 initial support for calling convention generation, still unfinished. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34682 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 20:43:37 +00:00
Chris Lattner
114e5dd464 emit an enum value for the # of target registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34624 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-26 03:34:38 +00:00
Chris Lattner
d263114d7a the lengths of the strings are known, just use memcmp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34321 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 19:26:16 +00:00
Chris Lattner
3b515802f6 Implement Function::getIntrinsicID without it needing to call Value::getName, 
which allocates a string.  This speeds up instcombine on 447.dealII by 5%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34318 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 19:17:16 +00:00
Reid Spencer
ac9dcb94dd For PR1195: 
Change use of "packed" term to "vector" in comments, strings, variable
names, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34300 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 03:39:18 +00:00
Reid Spencer
9d6565a5b1 For PR1195: 
Rename PackedType -> VectorType, ConstantPacked -> ConstantVector, and
PackedTyID -> VectorTyID. No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34293 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 02:26:10 +00:00
Jim Laskey
95af592a63 Automatically generating intrinsic declarations from Dan Gohman. Modified 
to construct FunctionType in separate function, and, have getDeclaration
return a Function instead of a Constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34008 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-07 20:38:26 +00:00
Reid Spencer
c9c1787907 Set the new NO_INSTALL flag for build-only tools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33967 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-06 18:51:28 +00:00
Jim Laskey
95d97b90e8 Error check and eliminate unnecessary value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33966 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-06 18:30:58 +00:00
Jim Laskey
01ba6adc8f Regenerate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33965 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-06 18:20:07 +00:00
Jim Laskey
81a21eae3e Deemed too cute to live. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33964 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-06 18:19:44 +00:00
Jim Laskey
251e3c6f6f Regenerate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33963 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-06 18:03:31 +00:00
Jim Laskey
ba4cc09f51 Support var arg intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33962 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-06 18:02:54 +00:00
Jim Laskey
844b892246 Make the constant honest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33557 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-26 23:00:54 +00:00
Jim Laskey
a683f9ba13 Files missing from LABEL check in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33539 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-26 17:29:20 +00:00
Chris Lattner
d8a1728b5a Make tblgen error more useful. Patch by B. Scott Michel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33295 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-17 07:45:12 +00:00
Reid Spencer
a54b7cbd45 For PR1064: 
Implement the arbitrary bit-width integer feature. The feature allows
integers of any bitwidth (up to 64) to be defined instead of just 1, 8,
16, 32, and 64 bit integers.

This change does several things:
1. Introduces a new Derived Type, IntegerType, to represent the number of
   bits in an integer. The Type classes SubclassData field is used to
   store the number of bits. This allows 2^23 bits in an integer type.
2. Removes the five integer Type::TypeID values for the 1, 8, 16, 32 and
   64-bit integers. These are replaced with just IntegerType which is not
   a primitive any more.
3. Adjust the rest of LLVM to account for this change.

Note that while this incremental change lays the foundation for arbitrary
bit-width integers, LLVM has not yet been converted to actually deal with
them in any significant way. Most optimization passes, for example, will
still only deal with the byte-width integer types.  Future increments
will rectify this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33113 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-12 07:05:14 +00:00
Reid Spencer
db8d2bed6a For PR950: 
Convert signed integer types to signless.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32786 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-31 05:50:28 +00:00
Jim Laskey
dbe4006cf3 Ignore entries with blank names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32491 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-12 20:55:58 +00:00
Jim Laskey
9a7dfa3fd4 Rollback changes to take a different tack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32488 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-12 19:26:50 +00:00
Jim Laskey
55a7ec33d7 Honor the command line specification for machine type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32483 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-12 16:07:33 +00:00
Bill Wendling
f5da13367f What should be the last unnecessary <iostream>s in the library. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32333 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-07 22:21:48 +00:00
Evan Cheng
0555122412 Match TargetInstrInfo changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32107 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-01 22:57:41 +00:00
Chris Lattner
f7560ed6b1 Fix PR1001, patch by Nikhil Patil! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31880 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-20 18:54:33 +00:00
Evan Cheng
fb1aab0673 Add opcode to TargetInstrDescriptor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31804 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-17 01:46:27 +00:00
Chris Lattner
f64f9a4b75 Remove the isTwoAddress property from the CodeGenInstruction class. It should 
not be used for anything other than backwards compat constraint handling.

Add support for a new DisableEncoding property which contains a list of
registers that should not be encoded by the generated code emitter.  Convert
the codeemitter generator to use this, fixing some PPC JIT regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31769 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-15 23:23:02 +00:00
Chris Lattner
0bb75004ff ADd support for adding constraints to suboperands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31748 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-15 02:38:17 +00:00
Chris Lattner
33a400477b restore some 'magic' code that I removed: it is needed. Add comments explaining 
why.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31743 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-14 22:17:10 +00:00
Chris Lattner
717a611f79 minimal hack to get patterns whose result type is iPTR to be selected. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31742 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-14 21:50:27 +00:00
Chris Lattner
0d1bb1322c remove some dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31740 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-14 21:41:35 +00:00
Chris Lattner
ab51ddd7c0 Add support for nodes that return iPTR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31739 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-14 21:32:01 +00:00
Chris Lattner
646085dde9 changes to get ptr_rc to be accepted in patterns. This is needed for ppc preinc 
stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31738 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-14 21:18:40 +00:00
Chris Lattner
7c3a96b81a Fix a bug handling nodes with variable arguments. The code was fixed to assume 
that there were two input operands before the variable operand portion.  This
*happened* to be true for all call instructions, which took a chain and a
destination, but was not true for the PPC BCTRL instruction, whose destination
is implicit.

Making this code more general allows elimination of the custom selection logic
for BCTRL.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31732 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-14 18:41:38 +00:00
Chris Lattner
f196839562 allow ptr_rc to explicitly appear in an instructions operand list, it doesn't 
have to be a subpart of a complex operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31618 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-10 02:01:40 +00:00
Evan Cheng
a1fd6504aa Remove M_2_ADDR_FLAG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31583 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 02:22:54 +00:00
Evan Cheng
892aaf8d74 Divide select methods into groups by SelectionDAG node opcodes (ISD::ADD, 
X86ISD::CMP, etc.) instead of SDNode names (add, x86cmp, etc). We now allow
multiple SDNodes to map to the same SelectionDAG node (e.g. store, indexed
store).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31575 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 23:01:03 +00:00
Evan Cheng
811731e340 Always pass the root node to ComplexPattern isel matching function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31570 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 20:31:10 +00:00
Chris Lattner
29434364dd emit TIED_TO correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31484 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 01:27:55 +00:00
Chris Lattner
d9a7f4db5f Mark predicate operands as such in operand info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31483 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 23:53:31 +00:00
Chris Lattner
a0cca4ae26 simplify the way operand flags and constraints are handled, making it easier 
to extend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31481 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 23:49:51 +00:00
Chris Lattner
a818e92f8b recognize ppc's blr instruction as predicated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31480 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 21:44:54 +00:00
Chris Lattner
5fa39df5ba regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31472 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 23:28:58 +00:00
Jeff Cohen
d41b30def3 Unbreak VC++ build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31464 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 19:31:28 +00:00
Evan Cheng
c51737f46f Clean up some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31451 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 09:40:23 +00:00
Chris Lattner
efe9f4a3b6 Parse PredicateOperand's. When an instruction takes one, have the generated 
isel fill in the instruction operands with the 'execute always' value
automatically.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31448 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 05:12:02 +00:00
Chris Lattner
dfdaeb276e First steps to getting PredicateOperand's to work. This handles instruction 
and pat pattern definitions.  Codegen is not right for them yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31444 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 01:35:50 +00:00
Chris Lattner
d438b53e76 eliminate need for the NumMIOperands field in Operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31432 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 23:45:17 +00:00
Reid Spencer
fa3e3b9427 Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31403 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 01:48:30 +00:00
Reid Spencer
8b9ea8099e Don't write out variables that are never used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31396 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 01:28:12 +00:00
Chris Lattner
9c5d4de837 silence warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31392 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 01:11:05 +00:00
Reid Spencer
63fd6ad77b Revert last patch which causes tblgen to segfault (why, I'm not sure). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31383 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 21:07:40 +00:00
Reid Spencer
9ec4849ff6 For PR786: 
Remove unused variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31381 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:46:16 +00:00
Evan Cheng
4c2b7a3808 Tied-to constraint must be op_with_larger_idx = op_with_smaller_idx or else throw an exception. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31361 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 23:03:11 +00:00
Evan Cheng
0db427bb2d Not meant to be checked in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31334 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 00:27:59 +00:00
Evan Cheng
e2ba897588 Add operand constraints to TargetInstrInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31333 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 00:27:05 +00:00
Evan Cheng
13e9e9c235 Passing isel root and use operands to ComplexPattern functions, these should do the usual load folding checks as well. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30972 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-16 06:33:44 +00:00
Evan Cheng
ce1381afd9 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30956 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-14 08:30:15 +00:00
Evan Cheng
4f77616c28 Really remove dead nodes from isel queue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30923 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 23:18:52 +00:00
Evan Cheng
1fae00f1ad Use RemoveDeadNode to kill dead node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30917 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 20:35:19 +00:00
Evan Cheng
4326ef582b Prior load folding check on chain operand was too strict. It requires the 
chain operand to point to the load being folded. Now we relax this, traversing
up the chain, if it doesn't reach the load, then it's ok. We will create a
TokenFactor (of all the chain operands and the load's chain) to capture all
the control flow dependencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30897 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-12 02:08:53 +00:00
Evan Cheng
94b3040fef Added properties such as SDNPHasChain to ComplexPattern. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30890 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 21:02:01 +00:00
Chris Lattner
bcc3f0a61d regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30888 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 18:13:09 +00:00
Chris Lattner
1ceb6c830f Add support for let expressions around an mdef. This implements a new part 
of Regression/TableGen/MultiClass.td.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30887 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 18:12:44 +00:00
Chris Lattner
39e73f7c83 Special case tblgen generated code for patterns like (and X, 255) or (or X, 42). 
The dag/inst combiners often 'simplify' the masked value based on whether
or not the bits are live or known zero/one.  This is good and dandy, but
often causes special case patterns to fail, such as alpha's CMPBGE pattern,
which looks like "(set GPRC:$RC, (setuge (and GPRC:$RA, 255), (and GPRC:$RB, 255)))".
Here the pattern for (and X, 255) should match actual dags like (and X, 254) if
the dag combiner proved that the missing bits are already zero (one for 'or').

For CodeGen/Alpha/cmpbge.ll:test2 for example, this results in:

        sll $16,1,$0
        cmpbge $0,$17,$0
        ret $31,($26),1

instead of:

        sll $16,1,$0
        and $0,254,$0
        and $17,255,$1
        cmpule $1,$0,$0
        ret $31,($26),1

... and requires no target-specific code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30871 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 04:05:55 +00:00
Chris Lattner
be8e72120d Split some code out into a new method. The generated code is exactly 
identical, this is just a refactoring.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30868 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-11 03:35:34 +00:00
Evan Cheng
d3eea90a9b Predicate function on the node should be matched before its childrean' matching 
code. This is especially important now matching ISD::LOAD also requires a
Predicate_Load call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30845 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-09 21:02:17 +00:00
Chris Lattner
dc52f17a30 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30799 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-07 07:15:19 +00:00
Chris Lattner
85899b8b10 Bugfix: this allows multiclasses to have default arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30798 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-07 07:14:48 +00:00
Chris Lattner
90aa839c88 Fix more static dtor issues 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30725 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-04 21:52:35 +00:00
Chris Lattner
259bda48e2 This: 
AggregateString += "\0\0";

Doesn't add two nuls to the AggregateString (for obvious reasons), which
broke the asmprinter when the first character of an asm string was not
literal text.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30625 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-27 16:44:09 +00:00
Chris Lattner
16f046a6ce Actually, name the method PrintSpecial to match other stuff in AsmPrinter.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30618 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 23:47:10 +00:00
Chris Lattner
1bf6361dfd Add support for ${:foo} syntax, where "foo" is passed into "printSpecial" and 
has no associated operand.  This is useful for portably encoding stuff like
the comment character into an asm string.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30617 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 23:45:08 +00:00
Chris Lattner
ce6e84ca6c don't allow 'imm' or specific imms, like '1' on the LHS of a binop. 
This shrinks X86GenDAGISel by ~330 lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30574 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-21 20:46:13 +00:00
Chris Lattner
649069728f Fit to 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30572 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-21 18:28:27 +00:00
Evan Cheng
d46bd604ed Allow PatFrag to be a leaf node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30498 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-19 19:08:04 +00:00
Evan Cheng
cf6d791e08 Add result of a Xform to isel queue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30497 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-19 18:40:15 +00:00
Chris Lattner
bc7fa5277f If multiple predicates are listed, they must all pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30476 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-19 00:41:36 +00:00
Chris Lattner
47a7e2681e There! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30473 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-18 22:41:07 +00:00
Chris Lattner
a4503de431 Fix Regression/TableGen/2006-09-18-LargeInt.td 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30472 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-18 22:28:27 +00:00
Chris Lattner
7905c55b12 Relax this check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30381 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-14 23:54:24 +00:00
Evan Cheng
966fd37ba5 1) With X86 lowering change, the following can no longer happen since 
the branch's chain is also produced by cmp.
          [ch, r : ld]
             ^ ^
             | |
      [XX]--/   \- [flag : cmp]
       ^             ^
       |             |
       \---[br flag]-

Remove an isel check which prevents loads from being folded into cmp / test
instructions.

2) Whenever possible, delete a selected node to allow more load folding
opportunities. Note not all nodes can be deleted after it has been
selected. Some may have simply morphed; some have not changed at all (e.g.
EntryToken).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30242 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-11 02:24:43 +00:00
Evan Cheng
6cec34e094 Generated isel should favors explicit constant operand (+2) over an operand with a predicate (+1). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30180 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-08 07:26:39 +00:00
Chris Lattner
8aa01f4b43 Fix JIT encoding of two-addr instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30111 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-05 03:01:52 +00:00
Chris Lattner
2926869b4a Fix a long-standing wart in the code generator: two-address instruction lowering 
actually *removes* one of the operands, instead of just assigning both operands
the same register.  This make reasoning about instructions unnecessarily complex,
because you need to know if you are before or after register allocation to match
up operand #'s with the target description file.

Changing this also gets rid of a bunch of hacky code in various places.

This patch also includes changes to fold loads into cmp/test instructions in
the X86 backend, along with a significant simplification to the X86 spill
folding code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30108 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-05 02:12:02 +00:00
Chris Lattner
cce56af911 Make sure to clear CurDefmPrefix = 0, otherwise stuff after a defm won't 
parse right.  This fixes TableGen/MultiClass.td


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30037 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 22:07:27 +00:00
Chris Lattner
7717d0930a fix an assertion with multidefs. Def inside of multiclasses don't need to 
be complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30034 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 21:59:03 +00:00
Chris Lattner
2762738d96 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30029 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 21:14:42 +00:00
Chris Lattner
12069866c8 Add often-requested support for defining "multiclasses" which can be instantiated. 
This allows you to define multiple definitions with one line, encouraging
more .td file factoring.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30027 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 21:13:49 +00:00
Reid Spencer
f100dcc42e Add virtual methods to all subclasses so they are not overloaded. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29930 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 00:12:25 +00:00
Chris Lattner
8dc728e440 Use compiler.h instead of hand rolling our own macro 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29913 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 13:16:24 +00:00
Evan Cheng
f037ca6245 Do not emit getTargetNode() and SelectNodeTo() which takes more than 3 
SDOperand arguments. Use the variants which take an array and number instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29906 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 08:11:28 +00:00
Evan Cheng
95514bae73 SelectNodeTo now returns a SDNode*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29901 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 08:00:10 +00:00
Evan Cheng
7a33db0b20 Minor getCopyToReg() call change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29900 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 07:39:28 +00:00
Evan Cheng
9ade218533 Select() no longer require Result operand by reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29898 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 05:34:46 +00:00
Evan Cheng
2a318cfad5 Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29897 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 01:34:15 +00:00
Evan Cheng
f549319b4a A bit more clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29893 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 01:02:19 +00:00
Evan Cheng
676d731c61 - Clean up tablegen dag isel generator code. 
- Clean up the code generated by tablegen:
  * AddToISelQueue now takes one argument.
  * ComplexPattern matching condition can now be shared.
  * Eliminate passing unnecessary arguments to emit routines.
  * Eliminate some unneeded SDOperand declarations in select routines.
  * Other minor clean ups.
- This reduces foot print slightly: X86ISelDAGToDAG.o is reduced from 971k
  to 823k.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29892 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 00:59:04 +00:00
Evan Cheng
23329f5e03 SelectNodeTo() may return a SDOperand that is different from the input. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29726 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-16 07:30:09 +00:00
Chris Lattner
dfb8607397 The generated runloop shouldn't require Select to update 'Result'. In fact 
we'd like to remove result entirely.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29713 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-15 23:42:26 +00:00