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4177 Commits

Author SHA1 Message Date
Chris Lattner
a2590c5b3e Add callseq_begin/end support 
Call stil not supported yet


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22998 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 00:47:15 +00:00
Chris Lattner
d177579860 Adjust to new livevars interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22991 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 23:41:14 +00:00
Chris Lattner
76eb08bcda Simplify this code by using LiveVariables::KillsRegister 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22988 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 22:49:55 +00:00
Chris Lattner
57da25231a Fix PR618 and Regression/CodeGen/CBackend/2005-08-23-Fmod.ll by not emitting 
x%y for 'rem' on fp values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22984 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 20:22:50 +00:00
Chris Lattner
424dcbdb3b add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22982 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 06:27:59 +00:00
Nate Begeman
8ca5693c51 Ack, typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22981 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 05:45:10 +00:00
Nate Begeman
a50d53e5ef Add an option to make SetCC illegal as a beta option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22979 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 05:42:36 +00:00
Nate Begeman
354df0ae6d Remove some instructions we no longer generate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22976 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 01:16:46 +00:00
Chris Lattner
1f24df6324 Remove some regs that are not used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22975 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 22:32:13 +00:00
Chris Lattner
9dc4d3cbac Nate noticed that 30% of the malloc/frees in llc come from calls to LowercaseString 
in the asmprinter.  This changes the .td files to use lower case register names,
avoiding the need to do this call.  This speeds up the asmprinter from 1.52s
to 1.06s on kc++ in a release build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22974 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 22:00:02 +00:00
Chris Lattner
0a00bece0d Fix a crash I introduced into the IA64 backend with my copyfromreg change. 
It used to crash on any function that took float arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22973 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 21:33:11 +00:00
Chris Lattner
47c0889419 Add a pass name for -time-passes output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22970 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 18:28:09 +00:00
Chris Lattner
f7f2255505 Implement stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22963 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 01:27:59 +00:00
Chris Lattner
ddf3e7dfd7 Fix compilation of: 
float %test2(float* %P) {
        %Q = load float* %P
        %R = add float %Q, %Q
        ret float %R
}

By returning the right result.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22961 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 00:59:14 +00:00
Chris Lattner
b30ee6a41a Make sure expressions only have one use before emitting them into a place that is conditionally executed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22960 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 00:47:28 +00:00
Chris Lattner
9944b76cfe Implement most of load support. There is still a bug though. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22959 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-21 22:31:09 +00:00
Chris Lattner
1db1adbdee Don't print out the MBB label for the entry mbb 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22953 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-21 19:09:33 +00:00
Chris Lattner
f913d3f91c Simplify the logic for BRTWOWAY_CC handling. The isel code already 
simplifies BRTWOWAY into BR if one of the results is a fall-through.
Unless I'm missing something, there is no reason to duplicate this
in the target-specific code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22952 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-21 19:03:28 +00:00
Chris Lattner
2fbb4579d6 Implement selection for branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22951 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-21 18:50:37 +00:00
Chris Lattner
4dd4a2d278 If the false value for a select_cc is really simple (has no inputs), evaluate 
it in the block.  This codegens:

int %test(bool %c) {
        %retval = select bool %c, int 17, int 1
        ret int %retval
}

as:

_test:
        rlwinm r2, r3, 0, 31, 31
        li r2, 17
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        li r2, 1
.LBB_test_2:    ;
        or r3, r2, r2
        blr

instead of:

_test:
        rlwinm r2, r3, 0, 31, 31
        li r2, 17
        li r4, 1
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        or r2, r4, r4
.LBB_test_2:    ;
        or r3, r2, r2
        blr

... which is one fewer instruction.  The savings are more significant for
global address and constantfp nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22946 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-21 17:41:11 +00:00
Duraid Madina
7340dd5d2e reenable collapse of loadimm+AND -> dep.z (thanks guys) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22944 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-21 15:43:53 +00:00
Jim Laskey
ffb973df92 Repair an out by one error for IA64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22942 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-20 11:05:23 +00:00
Chris Lattner
4416f1a0a5 add support for global address, including PIC support. 
This REALLY should be lowered by the legalizer!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22941 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 22:38:53 +00:00
Chris Lattner
7e65997c43 Fix a typeo, no wonder all tokenfactor edges were the same! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22935 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 21:33:02 +00:00
Chris Lattner
ecbce617ca Split RegisterClass 'Methods' into MethodProtos and MethodBodies 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22929 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 19:13:20 +00:00
Chris Lattner
f0c5f67dbc put reg classes into namespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22927 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:53:43 +00:00
Chris Lattner
fabc8ffacb Put reg classes into namespaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22926 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:52:55 +00:00
Chris Lattner
03ba7b9f25 Put register classes into namespaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22925 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:51:57 +00:00
Chris Lattner
cbec3b00bd Put register classes in namespaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22924 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:50:46 +00:00
Chris Lattner
e7af178ccf Fix code that assumes the register info will be dumped into a target 
namespace instead of the reg class namespace.  Update getRegClassForType()
to use modified names due to tblgen change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22923 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:50:11 +00:00
Chris Lattner
28e728d75a put reg classes in namespaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22922 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:49:22 +00:00
Chris Lattner
1ff9540c17 Require that targets specify a namespace for their register classes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22921 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:48:48 +00:00
Chris Lattner
6096f0d4c6 The skeleton target has never had an isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22917 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:35:41 +00:00
Chris Lattner
8212203ab9 This code has always been dead on itanium 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22916 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:34:37 +00:00
Chris Lattner
5499742c06 This code has always been dead for alpha 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22915 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:33:26 +00:00
Chris Lattner
2505d6b727 The simple isel being gone makes this dead! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22914 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:32:03 +00:00
Chris Lattner
0b1e641b82 Now that the simple isels are dead, so is this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22913 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 18:30:39 +00:00
Chris Lattner
c19d5621ae Sparcv9 gets no operand info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22909 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 16:56:56 +00:00
Duraid Madina
a91103430b a bugfix (up top) and a quick repair job: disable generation of dep.z 
(which died about a week ago) so we're back to load-(2^n-1)-then-AND
sequences. slow, but things should now be Almost Completely Working,
modulo those pesky alignment/ABI issues.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22904 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 13:25:50 +00:00
Nate Begeman
27d53ba6dd Fix a bug where we were passing the wrong number of arguments to an 
instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22901 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 03:42:28 +00:00
Chris Lattner
80132a4b48 mark variable arity instructions as such. Alpha wins the battle for 
cleanest backend in this metric :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22893 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:51:37 +00:00
Chris Lattner
efc58be8ca Mark some instructions as variable_ops, and PSEUDO_ALLOC as taking a GPR. 
I'm not convinced this is all of them,  but I can't do much testing, because
IA64 LLC crashes on big programs :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22892 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:47:42 +00:00
Chris Lattner
9d9dc816d0 add a few missing cases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22891 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:41:29 +00:00
Chris Lattner
b822abade7 Give ADJCALLSTACKDOWN/UP the correct operands. 
Give a whole bunch of other stuff variable operands, particularly FP.  The
FP stackifier is playing fast and loose with operands here, so we have to
mark them all as variable.  This will have to be fixed before we can dag->dag
the X86 backend.  The solution is for the pre-stackifier and post-stackifier
instructions to all be disjoint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22890 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:38:22 +00:00
Nate Begeman
02b88a4586 ISD::OR, and it's accompanying SelectBitfieldInsert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22889 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:38:14 +00:00
Chris Lattner
679c408768 The variable SAR's only take one operand too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22888 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:31:37 +00:00
Chris Lattner
fd444b2a69 Stop adding bogus operands to variable shifts on X86. These instructions 
only take one operand.  The other comes implicitly in through CL.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22887 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-19 00:16:17 +00:00
Nate Begeman
73bfa71524 Remove the X86 and PowerPC Simple instruction selectors; their time has 
passed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22886 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 23:53:15 +00:00
Nate Begeman
c15ed447f4 Add shifts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22884 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 23:38:00 +00:00
Chris Lattner
45fcb8f410 Fix operand numbers by marking variable arity nodes as such and by fixing 
the operand lists of a few other nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22883 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 23:25:33 +00:00
Chris Lattner
3f852b45fc MFLR doesn't take an operand, the LR register is implicit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22882 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 23:24:50 +00:00
Chris Lattner
329cdc3801 Add a new flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22881 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 23:17:07 +00:00
Chris Lattner
0bc04231c0 Move this to the emitter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22877 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 20:08:53 +00:00
Jim Laskey
5b5f0b7fd5 More optimal solution for loading constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22870 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 18:58:23 +00:00
Chris Lattner
d607c12e8e After selecting the instructions for a basic block, emit the instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22869 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 18:46:06 +00:00
Chris Lattner
f5fac3b4a6 remove some unused stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22866 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 18:34:00 +00:00
Nate Begeman
58dfb08319 Fix int foo() { return 65535; } by using the top 16 bits of the constant 
as the argument to LIS rather than the result of HA16(constant).

The DAG->DAG ISel was already doing the right thing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22865 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 18:14:49 +00:00
Nate Begeman
a694047813 Improve ISD::Constant codegen. 
Now for int foo() { return -1; } we generate:
_foo:
        li r3, -1
        blr

instead of
_foo:
        lis r2, -1
        ori r3, r2, 65535
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22864 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 18:01:39 +00:00
Chris Lattner
0c09a411e0 replace switch stmt with an assert, generate li 0 instead of lis 0 for 0, 
to make the code follow people's expectations better.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22861 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 17:16:52 +00:00
Jim Laskey
3285aadce9 Handle loading of 0x????0000 constants with a single instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22858 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 15:52:30 +00:00
Nate Begeman
cffc32b6e2 Add support for ISD::AND, and its various optimized forms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22857 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 07:30:46 +00:00
Nate Begeman
131a880520 Maintain consistency in negating things 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22855 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 05:44:50 +00:00
Nate Begeman
0f3257a330 Implement XOR, remove a broken sign_extend_inreg case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22854 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 05:00:13 +00:00
Nate Begeman
305a1c75cf Add a bunch more simple nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22851 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 03:04:18 +00:00
Nate Begeman
6a7d61179c Add a couple more nodes that are easy to handle 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22850 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 00:53:47 +00:00
Nate Begeman
b5a0668d43 Be fruitful and multiply! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22849 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 00:21:41 +00:00
Jim Laskey
b454cfd453 Better version of isIntImmediate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22848 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 00:15:15 +00:00
Nate Begeman
26653500bb Teach the DAG->DAG ISel about FNEG, and how it can be used to invert 
several of the PowerPC opcodes that come in both negated and non-negated
forms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22845 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 23:46:35 +00:00
Jim Laskey
b8df7c2213 Promote dependency for MathExtras.h out of Constants.h. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22839 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 20:04:34 +00:00
Jim Laskey
cb6682fa44 Culling out use of unions for converting FP to bits and vice versa. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22838 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:34:49 +00:00
Chris Lattner
8482dd894d add a beta option for turning on dag->dag isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22837 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:33:30 +00:00
Chris Lattner
a5a91b1026 initial hack at a dag->dag instruction selector. This is obviously woefully 
incomplete, but it is a start.  It handles basic argument/retval stuff, immediates,
add and sub.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22836 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:33:03 +00:00
Chris Lattner
d1c4626e14 add prototype, remove dead proto 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22835 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:32:03 +00:00
Chris Lattner
9d6c45bdd7 Fix some bugs in the alpha backend, some of which I introduced yesterday, 
and some that were preexisting.  All alpha regtests pass now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22829 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 17:08:24 +00:00
Chris Lattner
6d9aed4f8f Fix a few small typos I noticed when converting this over to the DAG->DAG 
selector.  Also, there is no difference between addSImm and addImm, so just
use addImm, folding some branches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22819 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 01:25:14 +00:00
Jim Laskey
a033b4d8eb Removed UINT_TO_FP and SINT_TO_FP from ISel outright. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22818 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 01:14:38 +00:00
Andrew Lenharth
035b8abdab thinko. Should fix s4addl.ll regression 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22817 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:47:24 +00:00
Jim Laskey
361ca5c927 Remove ISel code generation for UINT_TO_FP and SINT_TO_FP. Now asserts if 
marked as legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22816 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:41:40 +00:00
Jim Laskey
ad23c9d4f2 Make UINT_TO_FP and SINT_TO_FP use generic expansion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22815 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:40:22 +00:00
Nate Begeman
456f1e890c Implement a couple improvements: 
Remove dead code in ISD::Constant handling
Add support for add long, imm16

We now codegen 'long long foo(long long a) { return ++a; }'
as:
addic r4, r4, 1
addze r3, r3
blr

instead of:
li r2, 1
li r5, 0
addc r2, r4, r2
adde r3, r3, r5
blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22811 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:20:08 +00:00
Chris Lattner
a8cd01524f updates for changes in nodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22808 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 21:58:15 +00:00
Chris Lattner
707ebc5dd6 update the backends to work with the new CopyFromReg/CopyToReg/ImplicitDef nodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22807 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 21:56:37 +00:00
Nate Begeman
7cbd525ba8 Implement BR_CC and BRTWOWAY_CC. This allows the removal of a rather nasty 
fixme from the PowerPC backend.  Emit slightly better code for legalizing
select_cc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22805 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 19:49:35 +00:00
Chris Lattner
7c5a3d390a Pull the LLVM -> DAG lowering code out of the pattern selector so that it 
can be shared with the DAG->DAG selector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22799 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 17:14:42 +00:00
Chris Lattner
b0096bd19d Turn loop strength reduction on by default. 
Only run createLowerConstantExpressionsPass for the simple isel.  The DAG
isel has no need for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22794 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 23:47:04 +00:00
Jim Laskey
ea0617a023 Broke 80 column rule. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22792 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 17:35:26 +00:00
Jim Laskey
30679e691d Changed code gen for int to f32 to use rounding. This makes FP results 
consistent with gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22791 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 17:14:19 +00:00
Andrew Lenharth
d228427f87 isIntImmediate is a good Idea. Add a flavor that checks bounds while it is at it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22790 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 14:31:37 +00:00
Nate Begeman
2d56e72f09 Fix last night's PPC32 regressions by 
1. Not selecting the false value of a select_cc in the false arm, which
   isn't legal for nested selects.
2. Actually returning the node we created and Legalized in the FP_TO_UINT
   Expander.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22789 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 18:38:32 +00:00
Nate Begeman
889f2c1acf Fix last night's X86 regressions by putting code for SSE in the if(SSE) 
block.  nur.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22788 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 18:37:02 +00:00
Nate Begeman
875f360e22 Fix FP_TO_UINT with Scalar SSE2 now that the legalizer can handle it. We 
now generate the relatively good code sequences:
unsigned short foo(float a) { return a; }
_foo:
        movss 4(%esp), %xmm0
        cvttss2si %xmm0, %eax
        movzwl %ax, %eax
        ret

and
unsigned bar(float a) { return a; }
_bar:
        movss .CPI_bar_0, %xmm0
        movss 4(%esp), %xmm1
        movapd %xmm1, %xmm2
        subss %xmm0, %xmm2
        cvttss2si %xmm2, %eax
        xorl $-2147483648, %eax
        cvttss2si %xmm1, %ecx
        ucomiss %xmm0, %xmm1
        cmovb %ecx, %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22786 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 04:36:51 +00:00
Nate Begeman
5a01481585 Make FP_TO_UINT Illegal. This allows us to generate significantly better 
codegen for FP_TO_UINT by using the legalizer's SELECT variant.

Implement a codegen improvement for SELECT_CC, selecting the false node in
the MBB that feeds the phi node.  This allows us to codegen:
void foo(int *a, int b, int c) { int d = (a < b) ? 5 : 9; *a = d; }
as:
_foo:
        li r2, 5
        cmpw cr0, r4, r3
        bgt .LBB_foo_2  ; entry
.LBB_foo_1:     ; entry
        li r2, 9
.LBB_foo_2:     ; entry
        stw r2, 0(r3)
        blr

insted of:
_foo:
        li r2, 5
        li r5, 9
        cmpw cr0, r4, r3
        bgt .LBB_foo_2  ; entry
.LBB_foo_1:     ; entry
        or r2, r5, r5
.LBB_foo_2:     ; entry
        stw r2, 0(r3)
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22784 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 01:17:16 +00:00
Nate Begeman
8f331325a2 Remove support for 64b PPC, it's been broken for a long time. It'll be 
back once a DAG->DAG ISel exists.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22778 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-13 05:59:16 +00:00
Jim Laskey
cf083e312c Fix for 2005-08-12-rlwimi-crash.ll. Make allowance for masks being shifted to 
zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22773 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 23:52:46 +00:00
Jim Laskey
847c3a976b 1. This changes handles the cases of (~x)&y and x&(~y) yielding ANDC, and 
(~x)|y and x|(~y) yielding ORC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22771 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 23:38:02 +00:00
Andrew Lenharth
1f3e808ebf match gcc's use of tabs, makes diffs easier 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22764 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 16:14:08 +00:00
Andrew Lenharth
21e786bdb4 .section cleanup, patch from Nicholas Riley 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22763 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 16:13:43 +00:00
Jim Laskey
191cf943e6 1. Added the function isOpcWithIntImmediate to simplify testing of operand with 
specified opcode and an integer constant right operand.

2. Modified ISD::SHL, ISD::SRL, ISD::SRA to use rlwinm when applied after a mask.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22761 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-11 21:59:23 +00:00
Chris Lattner
2b48bc6f95 Tidied up the use of dyn_cast<ConstantSDNode> by using isIntImmediate more. 
Patch by Jim Laskey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22760 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-11 17:56:50 +00:00
Chris Lattner
54abfc5ee4 Use a more efficient method of creating integer and float virtual registers 
(avoids an extra level of indirection in MakeReg).

  defined MakeIntReg using RegMap->createVirtualRegister(PPC32::GPRCRegisterClass)
  defined MakeFPReg using RegMap->createVirtualRegister(PPC32::FPRCRegisterClass)

  s/MakeReg(MVT::i32)/MakeIntReg/
  s/MakeReg(MVT::f64)/MakeFPReg/

Patch by Jim Laskey!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22759 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-11 17:15:31 +00:00