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Author SHA1 Message Date
Alkis Evlogimenos
dd420e060a Add a spiller option to llc. A simple spiller will come soon. When we get CFG in the machine code represenation a global spiller will also be possible. Also document the linear scan register allocator but mark it as experimental for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12062 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 23:18:15 +00:00
Alkis Evlogimenos
5f37502bfb Add the long awaited memory operand folding support for linear scan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12058 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 20:05:10 +00:00
Misha Brukman
9d0802e7dd * If a badref has a name, print it out for ease of debugging 
* Doxygenify (some) comments


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12057 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 19:48:13 +00:00
Chris Lattner
23511597fe Add new method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12056 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 19:36:50 +00:00
Chris Lattner
82e9d7224e Correctly add an array marker on a node when appropriate! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12055 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 19:02:54 +00:00
Misha Brukman
58ae9c7290 Fix grammar and doxygenify comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12054 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 18:31:19 +00:00
Misha Brukman
b97fce5252 * Add implementation of ExtractBasicBlock() 
* Add comments to ExtractLoop()


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12053 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 18:28:34 +00:00
Misha Brukman
a8a06367f8 Add ability to extract a single basic block into a new function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12052 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 18:27:13 +00:00
Misha Brukman
1d83e11101 * HTML 4.01 Strict compliance 
* Removed unnecessary tabs in the entire file


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12051 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 18:21:04 +00:00
Misha Brukman
daa4cb0f03 HTML 4.01 Strict compliance. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12050 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 17:47:27 +00:00
Chris Lattner
ec726a1a6e Add this back, as its absence introduces assertions, and it seems to work now 
that Instructions are annotable again


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12045 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 15:28:27 +00:00
Tanya Lattner
f048bfd97d fix bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12044 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 15:05:17 +00:00
Brian Gaeke
05b15fb075 TargetCacheInfo has been removed; its only uses were to propagate a constant 
(16) into certain areas of the SPARC V9 back-end. I'm fairly sure the US IIIi's
dcache has 32-byte lines, so I'm not sure where the 16 came from. However, in
the interest of not breaking things any more than they already are, I'm going
to leave the constant alone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12043 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 06:43:29 +00:00
Tanya Lattner
9b3cbdbedb Adding new Modulo Scheduling graph files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12031 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 02:50:57 +00:00
Tanya Lattner
d14b83733e Removing old graph files with new graph files that I wrote. Updated ModuloScheduling pass, but still in progress. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12030 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 02:50:01 +00:00
Chris Lattner
2d6a6aa137 Expand on my note-to-self 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12029 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 02:44:44 +00:00
Chris Lattner
21585221b6 Handle passing constant integers to functions much more efficiently. Instead 
of generating this code:

        mov %EAX, 4
        mov DWORD PTR [%ESP], %EAX
        mov %AX, 123
        movsx %EAX, %AX
        mov DWORD PTR [%ESP + 4], %EAX
        call Y

we now generate:
        mov DWORD PTR [%ESP], 4
        mov DWORD PTR [%ESP + 4], 123
        call Y

Which hurts the eyes less.  :)

Considering that register pressure around call sites is already high (with all
of the callee clobber registers n stuff), this may help a lot.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12028 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 02:42:43 +00:00
Brian Gaeke
f2cab76a47 Don't look in the .libs directories that libtool makes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12027 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 02:41:22 +00:00
Chris Lattner
ce6096f49b Fix a minor code-quality issue. When passing 8 and 16-bit integer constants 
to function calls, we would emit dead code, like this:

int Y(int, short, double);
int X() {
  Y(4, 123, 4);
}

--- Old
X:
        sub %ESP, 20
        mov %EAX, 4
        mov DWORD PTR [%ESP], %EAX
***     mov %AX, 123
        mov %AX, 123
        movsx %EAX, %AX
        mov DWORD PTR [%ESP + 4], %EAX
        fld QWORD PTR [.CPIX_0]
        fstp QWORD PTR [%ESP + 8]
        call Y
        mov %EAX, 0
        # IMPLICIT_USE %EAX %ESP
        add %ESP, 20
        ret

Now we emit:
X:
        sub %ESP, 20
        mov %EAX, 4
        mov DWORD PTR [%ESP], %EAX
        mov %AX, 123
        movsx %EAX, %AX
        mov DWORD PTR [%ESP + 4], %EAX
        fld QWORD PTR [.CPIX_0]
        fstp QWORD PTR [%ESP + 8]
        call Y
        mov %EAX, 0
        # IMPLICIT_USE %EAX %ESP
        add %ESP, 20
        ret

Next up, eliminate the mov AX and movsx entirely!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12026 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 02:34:08 +00:00
Chris Lattner
99df257910 Fix the "partial pool allocator" on em3d and others. The problem is that 
DSNodes, unlike other GraphTraits nodes, can have null outgoing edges, and
df_iterator doesn't take this into consideration.  As a workaround, the
successor iterator now handles null nodes and 'indicates' that null has
no successors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12025 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 01:42:26 +00:00
Chris Lattner
9148ad3099 Make Module annotable. Reid has a bunch of code that depends on this, and 
we really don't win that much by eliminating this (not many Modules are
allocated), so it's not worth it.  When we can, we should revisit this in
the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12023 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 01:25:37 +00:00
Chris Lattner
99cca7d3aa Disable tail duplication in a case that breaks on Olden/tsp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12021 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-01 01:12:13 +00:00
Misha Brukman
201ff603a7 Doxygenify comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12015 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 23:55:11 +00:00
Misha Brukman
99cc88bb64 * Remove function to find "main" in a Module, there's a method for that 
* Removing extraneous empty space and empty comment lines


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12014 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 23:09:10 +00:00
Chris Lattner
cbee990a29 Fix -debug-pass=Executions, which relied on Function, Module, and BasicBlock 
being annotable


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12013 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 22:37:04 +00:00
Chris Lattner
06887c9a2a Fix bug: test/Regression/Transforms/LowerInvoke/2004-02-29-PHICrash.llx 
... which tickled the lowerinvoke pass because it used the BCE routines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12012 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 22:24:41 +00:00
Chris Lattner
2b39c91a40 Testcase for a bug that caused a whole bunch of testcases to die in the nightly 
tester last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12011 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 22:15:51 +00:00
Chris Lattner
92bc3bc11c Add an assert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12010 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 22:01:51 +00:00
Chris Lattner
c81295ab24 Add back #include I messed up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12009 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 21:40:53 +00:00
Chris Lattner
e8d43fdced Urg, forgot to check this in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12007 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 21:03:08 +00:00
Chris Lattner
61f57fae7a Module does not need to be annotatable aka annotable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12005 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 19:27:55 +00:00
Chris Lattner
a523cdf1b6 Remove public header. It's been moved to lib/Target/SparcV9 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12004 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 19:13:20 +00:00
Chris Lattner
08d4963d49 Move the private MachineInstrAnnot.h into a private directory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12003 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 19:12:51 +00:00
Chris Lattner
78827e9f8b Remove use of an ugly header 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12002 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 19:04:31 +00:00
Chris Lattner
585911ee21 Move methods out of .h file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12001 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 19:02:39 +00:00
Chris Lattner
e85f2348c9 Do not use explicit casts that hide the dependence on Instruction being 
annotable


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12000 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 19:02:26 +00:00
Chris Lattner
9548f20ad5 Ugh, the old sparc backend attaches MachineCodeForInstruction annotations on 
LLVM instructions.  Because it contains an explicit cast, we didn't catch it.
I guess instruction's will be annotable for the duration of the sparcv9's
existence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11999 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 18:54:23 +00:00
Alkis Evlogimenos
96c9b8b496 Add instruction name description. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11998 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 18:44:03 +00:00
Alkis Evlogimenos
7f6124cfc2 Use correct template for SHLD and SHRD instructions so that the memory 
operand size is correctly specified.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11997 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 09:19:40 +00:00
Alkis Evlogimenos
9c22aeb0b2 Improve allocation order: 
1) For 8-bit registers try to use first the ones that are parts of the
   same register (AL then AH). This way we only alias 2 16/32-bit
   registers after allocating 4 8-bit variables.

2) Move EBX as the last register to allocate. This will cause less
   spills to happen since we will have 8-bit registers available up to
   register excaustion (assuming we use the allocation order). It
   would be nice if we could push all of the 8-bit aliased registers
   towards the end but we much prefer to keep callee saved register to
   the end to avoid saving them on entry and exit of the function.

For example this gives a slight reduction of spills with linear scan
on 164.gzip.

Before:

11221 asm-printer           - Number of machine instrs printed
  975 spiller               - Number of loads added
  675 spiller               - Number of stores added
  398 spiller               - Number of register spills

After:

11182 asm-printer           - Number of machine instrs printed
  952 spiller               - Number of loads added
  652 spiller               - Number of stores added
  386 spiller               - Number of register spills


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11996 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 09:17:01 +00:00
Alkis Evlogimenos
8295f202d9 A big X86 instruction rename. The instructions are renamed to make 
their names more decriptive. A name consists of the base name, a
default operand size followed by a character per operand with an
optional special size. For example:

ADD8rr -> add, 8-bit register, 8-bit register

IMUL16rmi -> imul, 16-bit register, 16-bit memory, 16-bit immediate

IMUL16rmi8 -> imul, 16-bit register, 16-bit memory, 8-bit immediate

MOVSX32rm16 -> movsx, 32-bit register, 16-bit memory


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11995 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 08:50:03 +00:00
Brian Gaeke
6ac5300fbc Remove dead member variables of SparcV9SchedInfo and TargetSchedInfo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11994 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 08:40:03 +00:00
Chris Lattner
ee352852e7 Eliminate the X86-specific BMI functions, using BuildMI instead. 
Replace uses of addZImm with addImm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11992 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 07:22:16 +00:00
Chris Lattner
168aa90bf6 Fix a miscompilation of 197.parser that occurs when you have single basic 
block loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11990 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 07:10:16 +00:00
Chris Lattner
4279f3c984 Fix PR255: [tailduplication] Single basic block loops are very rare 
Note that this is a band-aid put over a band-aid.  This just undisables
tail duplication in on very specific case that it seems to work in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11989 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 06:41:20 +00:00
Brian Gaeke
e9f6f2c049 Update comment at head of file. Also fix C 'typedef struct' nonsense I 
inadvertently left in here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11988 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 06:33:28 +00:00
Chris Lattner
dce363d5ec Adjust to change in TII ctor arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11987 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 06:31:44 +00:00
Chris Lattner
bceb68807f Eliminate the distinction between "real" and "unreal" instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11986 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 06:31:16 +00:00
Brian Gaeke
620ee02353 Add more architectures, and ELF64 stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11985 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 06:30:25 +00:00
Chris Lattner
1ddf475b6a These two virtual methods are never called. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11984 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-29 05:59:33 +00:00