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Author SHA1 Message Date
Chris Lattner
df24575c31 Do not use explicit casts that hide the dependence on Instruction being 
annotable

llvm-svn: 12000
 2004-02-29 19:02:26 +00:00
Chris Lattner
252e887094 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.

llvm-svn: 11999
 2004-02-29 18:54:23 +00:00
Alkis Evlogimenos
e186d8eb2f Add instruction name description. 
llvm-svn: 11998
 2004-02-29 18:44:03 +00:00
Alkis Evlogimenos
8d8f872b3d Use correct template for SHLD and SHRD instructions so that the memory 
operand size is correctly specified.

llvm-svn: 11997
 2004-02-29 09:19:40 +00:00
Alkis Evlogimenos
10f4523e9a 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

llvm-svn: 11996
 2004-02-29 09:17:01 +00:00
Alkis Evlogimenos
7ecfe0a839 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

llvm-svn: 11995
 2004-02-29 08:50:03 +00:00
Brian Gaeke
8303cb575e Remove dead member variables of SparcV9SchedInfo and TargetSchedInfo 
llvm-svn: 11994
 2004-02-29 08:40:03 +00:00
Chris Lattner
a7db4ff17a Eliminate the X86-specific BMI functions, using BuildMI instead. 
Replace uses of addZImm with addImm.

llvm-svn: 11992
 2004-02-29 07:22:16 +00:00
Chris Lattner
e8e0bafbba Fix a miscompilation of 197.parser that occurs when you have single basic 
block loops.

llvm-svn: 11990
 2004-02-29 07:10:16 +00:00
Chris Lattner
bcc0df60ef 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.

llvm-svn: 11989
 2004-02-29 06:41:20 +00:00
Brian Gaeke
3d509f013e Update comment at head of file. Also fix C 'typedef struct' nonsense I 
inadvertently left in here.

llvm-svn: 11988
 2004-02-29 06:33:28 +00:00
Chris Lattner
c2977ac665 Adjust to change in TII ctor arguments 
llvm-svn: 11987
 2004-02-29 06:31:44 +00:00
Chris Lattner
b5f0e162c7 Eliminate the distinction between "real" and "unreal" instructions 
llvm-svn: 11986
 2004-02-29 06:31:16 +00:00
Brian Gaeke
98a5cf6256 Add more architectures, and ELF64 stuff. 
llvm-svn: 11985
 2004-02-29 06:30:25 +00:00
Chris Lattner
cfc8f02250 These two virtual methods are never called. 
llvm-svn: 11984
 2004-02-29 05:59:33 +00:00
Chris Lattner
dd752eec34 Remove a TON of flags that noone cares about 
llvm-svn: 11983
 2004-02-29 05:58:30 +00:00
Chris Lattner
d80ff1bdc0 Noone calls these virtual methods 
llvm-svn: 11982
 2004-02-29 05:58:16 +00:00
Chris Lattner
dded7ad224 This is the only file in the system that uses this enum. eliminate it. 
llvm-svn: 11981
 2004-02-29 05:57:59 +00:00
Chris Lattner
e4db708a7c Scrap a huge layer of cruft out of this interface. 
llvm-svn: 11980
 2004-02-29 05:57:21 +00:00
Chris Lattner
7cb71a20ca Implement initial prolog/epilog code insertion methods. 
llvm-svn: 11979
 2004-02-29 05:18:30 +00:00
Chris Lattner
768b31fc77 Remove unneeded #include 
llvm-svn: 11978
 2004-02-29 05:15:56 +00:00
Chris Lattner
8b7ac81d2e int64_t -> int 
llvm-svn: 11977
 2004-02-29 05:07:02 +00:00
Chris Lattner
34977159b3 Continue Alkis's int64_t cleanup. This makes all of the immediate related 
methods take an int or unsigned value instead of int64_t.

Also, add an 'addImm' method to the MachineInstrBuilder class, because the
fact that the hardware sign or zero extends it does not/should not matter
to the code generator.  Once the old sparc backend is removed the difference
can be eliminated.

llvm-svn: 11976
 2004-02-29 05:06:49 +00:00
Chris Lattner
85dd74a158 Add BuildMI variants that take a MBB::iterator 
llvm-svn: 11975
 2004-02-29 04:55:28 +00:00
Alkis Evlogimenos
0f96b44e0e Use correct template for ADC instruction with memory operands. 
llvm-svn: 11974
 2004-02-29 02:18:17 +00:00
Chris Lattner
800f720e7b Add an instruction selector capable of selecting 'ret void' 
llvm-svn: 11973
 2004-02-29 00:27:00 +00:00
Alkis Evlogimenos
6815402082 SHLD and SHRD take 32-bit operands but an 8-bit immediate. Rename them 
to denote this fact.

llvm-svn: 11972
 2004-02-28 23:46:44 +00:00
Alkis Evlogimenos
e8dac99a43 Floating point loads/stores act on memory operands. Rename them to 
denote this fact.

llvm-svn: 11971
 2004-02-28 23:42:35 +00:00
Alkis Evlogimenos
1d71a15be9 Rename instruction templates to be easier to the human eye to 
parse. The name is now I (operand size)*. For example:

Im32 -> instruction with 32-bit memory operands.

Im16i8 -> instruction with 16-bit memory operands and 8 bit immediate
          operands.

llvm-svn: 11970
 2004-02-28 23:09:03 +00:00
Alkis Evlogimenos
6038a89025 Uncomment instructions that take both an immediate and a memory 
operand but their sizes differ.

llvm-svn: 11969
 2004-02-28 22:06:59 +00:00
Brian Gaeke
7d5feb2b33 Fix my sloppiness 
llvm-svn: 11968
 2004-02-28 22:06:03 +00:00
Alkis Evlogimenos
f208a0fd81 Each instruction now has both an ImmType and a MemType. This describes 
the size of the immediate and the memory operand on instructions that
use them. This resolves problems with instructions that take both a
memory and an immediate operand but their sizes differ (i.e. ADDmi32b).

llvm-svn: 11967
 2004-02-28 22:02:05 +00:00
Brian Gaeke
d551a8b5fe Fix typo in comment 
llvm-svn: 11966
 2004-02-28 21:55:18 +00:00
Chris Lattner
ece9d747f2 Add a testcase for switch instruction induction 
llvm-svn: 11965
 2004-02-28 21:30:39 +00:00
Chris Lattner
a854ddd528 Implement switch->br and br->switch folding by ripping out the switch->switch 
and br->br code and generalizing it.  This allows us to compile code like this:

int test(Instruction *I) {
  if (isa<CastInst>(I))
    return foo(7);
  else if (isa<BranchInst>(I))
    return foo(123);
  else if (isa<UnwindInst>(I))
    return foo(1241);
  else if (isa<SetCondInst>(I))
    return foo(1);
  else if (isa<VAArgInst>(I))
    return foo(42);
  return foo(-1);
}

into:

int %_Z4testPN4llvm11InstructionE("struct.llvm::Instruction"* %I) {
entry:
        %tmp.1.i.i.i.i.i.i.i = getelementptr "struct.llvm::Instruction"* %I, long 0, ubyte 4            ; <uint*> [#uses=1]
        %tmp.2.i.i.i.i.i.i.i = load uint* %tmp.1.i.i.i.i.i.i.i          ; <uint> [#uses=2]
        %tmp.2.i.i.i.i.i.i = seteq uint %tmp.2.i.i.i.i.i.i.i, 27                ; <bool> [#uses=0]
        switch uint %tmp.2.i.i.i.i.i.i.i, label %endif.0 [
                 uint 27, label %then.0
                 uint 2, label %then.1
                 uint 5, label %then.2
                 uint 14, label %then.3
                 uint 15, label %then.3
                 uint 16, label %then.3
                 uint 17, label %then.3
                 uint 18, label %then.3
                 uint 19, label %then.3
                 uint 32, label %then.4
        ]
...

As well as handling the cases in 176.gcc and many other programs more effectively.

llvm-svn: 11964
 2004-02-28 21:28:10 +00:00
Chris Lattner
3583890ab7 Change this so that LLC actually tries to run the code generator, though it will 
immediately abort due to lack of an instruction selector. :)

llvm-svn: 11963
 2004-02-28 20:21:45 +00:00
Chris Lattner
ab9a9c4119 Add a hook to run with the V8 target, though it doesn't currently work. Also 
mark the PPC backend as experimental

llvm-svn: 11962
 2004-02-28 19:55:16 +00:00
Chris Lattner
38ae1362de Add hook for V8 target 
llvm-svn: 11961
 2004-02-28 19:54:16 +00:00
Chris Lattner
529a354ea4 SparcV8 now builds. 
llvm-svn: 11960
 2004-02-28 19:54:00 +00:00
Chris Lattner
5effdb67b7 fine grainify namespacification 
llvm-svn: 11959
 2004-02-28 19:53:18 +00:00
Chris Lattner
3852b0c3b8 Finegrainify namespacification 
llvm-svn: 11958
 2004-02-28 19:52:49 +00:00
Chris Lattner
88268605ec Tab completion is our friend. 
llvm-svn: 11957
 2004-02-28 19:45:39 +00:00
Chris Lattner
013aa47975 Clean up rules 
llvm-svn: 11956
 2004-02-28 19:43:40 +00:00
Chris Lattner
d2bb7e91b0 Bring this directory into "it actually compiles" land 
llvm-svn: 11955
 2004-02-28 19:37:18 +00:00
Chris Lattner
3f70429d28 Fix multiple inclusion problem 
llvm-svn: 11954
 2004-02-28 19:31:32 +00:00
Chris Lattner
69ab9e0840 if there is already a prototype for malloc/free, use it, even if it's incorrect. 
Do not just inject a new prototype.

llvm-svn: 11951
 2004-02-28 18:51:45 +00:00
Chris Lattner
9f35c413f5 Do not remove an active template argument even if the superclass had one of the 
same name

llvm-svn: 11950
 2004-02-28 17:41:48 +00:00
Chris Lattner
243e1df469 fix a bug in the testcase 
llvm-svn: 11949
 2004-02-28 17:33:21 +00:00
Chris Lattner
7d89f8837d Ignore X = X assignments that was causing Alkis's rewrite of X86.td to crash 
tblgen.

llvm-svn: 11948
 2004-02-28 17:31:28 +00:00
Chris Lattner
fbca3a0161 new testcase for a tblgen bug that alkis ran into 
llvm-svn: 11947
 2004-02-28 16:43:44 +00:00