Commit Graph

14051 Commits

Author SHA1 Message Date
Evan Cheng
4713724eda Need extload patterns after Chris' DAG combiner changes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28127 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 08:23:07 +00:00
Chris Lattner
6fc205fc44 Implement InstCombine/cast.ll:test29
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28126 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 06:39:07 +00:00
Chris Lattner
0d8dae749c Fold some common code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28124 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 06:32:04 +00:00
Chris Lattner
540121f1ec Implement:
// fold (and (sext x), (sext y)) -> (sext (and x, y))
  // fold (or  (sext x), (sext y)) -> (sext (or  x, y))
  // fold (xor (sext x), (sext y)) -> (sext (xor x, y))
  // fold (and (aext x), (aext y)) -> (aext (and x, y))
  // fold (or  (aext x), (aext y)) -> (aext (or  x, y))
  // fold (xor (aext x), (aext y)) -> (aext (xor x, y))


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28123 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 06:31:05 +00:00
Chris Lattner
a3dc3f692c Pull and through and/or/xor. This compiles some bitfield code to:
mov EAX, DWORD PTR [ESP + 4]
        mov ECX, DWORD PTR [EAX]
        mov EDX, ECX
        add EDX, EDX
        or EDX, ECX
        and EDX, -2147483648
        and ECX, 2147483647
        or EDX, ECX
        mov DWORD PTR [EAX], EDX
        ret

instead of:

        sub ESP, 4
        mov DWORD PTR [ESP], ESI
        mov EAX, DWORD PTR [ESP + 8]
        mov ECX, DWORD PTR [EAX]
        mov EDX, ECX
        add EDX, EDX
        mov ESI, ECX
        and ESI, -2147483648
        and EDX, -2147483648
        or EDX, ESI
        and ECX, 2147483647
        or EDX, ECX
        mov DWORD PTR [EAX], EDX
        mov ESI, DWORD PTR [ESP]
        add ESP, 4
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28122 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 06:10:43 +00:00
Chris Lattner
5ffc066912 Implement a variety of simplifications for ANY_EXTEND.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28121 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 05:58:59 +00:00
Chris Lattner
35e5c14b80 Factor some code, add these transformations:
// fold (and (trunc x), (trunc y)) -> (trunc (and x, y))
  // fold (or  (trunc x), (trunc y)) -> (trunc (or  x, y))
  // fold (xor (trunc x), (trunc y)) -> (trunc (xor x, y))


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28120 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 05:51:50 +00:00
Evan Cheng
8f7f7125e9 Better implementation of truncate. ISel matches it to a pseudo instruction
that gets emitted as movl (for r32 to i16, i8) or a movw (for r16 to i8). And
if the destination gets allocated a subregister of the source operand, then
the instruction will not be emitted at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28119 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 05:40:20 +00:00
Chris Lattner
55c63257f3 New note, Nate, please check to see if I'm full of it :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28118 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 05:36:15 +00:00
Jeff Cohen
4b75e73791 Fix VC++ compilation error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28117 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 01:47:05 +00:00
Chris Lattner
7e598096ea Sink noop copies into the basic block that uses them. This reduces the number
of cross-block live ranges, and allows the bb-at-a-time selector to always
coallesce these away, at isel time.

This reduces the load on the coallescer and register allocator.  For example
on a codec on X86, we went from:

   1643 asm-printer           - Number of machine instrs printed
    419 liveintervals         - Number of loads/stores folded into instructions
   1144 liveintervals         - Number of identity moves eliminated after coalescing
   1022 liveintervals         - Number of interval joins performed
    282 liveintervals         - Number of intervals after coalescing
   1304 liveintervals         - Number of original intervals
     86 regalloc              - Number of times we had to backtrack
1.90232 regalloc              - Ratio of intervals processed over total intervals
     40 spiller               - Number of values reused
    182 spiller               - Number of loads added
    121 spiller               - Number of stores added
    132 spiller               - Number of register spills
      6 twoaddressinstruction - Number of instructions commuted to coalesce
    360 twoaddressinstruction - Number of two-address instructions

to:

   1636 asm-printer           - Number of machine instrs printed
    403 liveintervals         - Number of loads/stores folded into instructions
   1155 liveintervals         - Number of identity moves eliminated after coalescing
   1033 liveintervals         - Number of interval joins performed
    279 liveintervals         - Number of intervals after coalescing
   1312 liveintervals         - Number of original intervals
     76 regalloc              - Number of times we had to backtrack
1.88998 regalloc              - Ratio of intervals processed over total intervals
      1 spiller               - Number of copies elided
     41 spiller               - Number of values reused
    191 spiller               - Number of loads added
    114 spiller               - Number of stores added
    128 spiller               - Number of register spills
      4 twoaddressinstruction - Number of instructions commuted to coalesce
    356 twoaddressinstruction - Number of two-address instructions

On this testcase, this change provides a modest reduction in spill code,
regalloc iterations, and total instructions emitted.  It increases the number
of register coallesces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28115 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-05 01:04:50 +00:00
Chris Lattner
b93b0347d8 Adjust to use proper TargetData copy ctor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28112 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 21:18:40 +00:00
Chris Lattner
6e994b7492 Final pass of minor cleanups for MachineInstr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28110 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 19:36:09 +00:00
Evan Cheng
14a6db8bd9 Initial support for register pressure aware scheduling. The register reduction
scheduler can go into a "vertical mode" (i.e. traversing up the two-address
chain, etc.) when the register pressure is low.
This does seem to reduce the number of spills in the cases I've looked at. But
with x86, it's no guarantee the performance of the code improves.
It can be turned on with -sched-vertically option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28108 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 19:16:39 +00:00
Chris Lattner
943b5e117f Remove redundancy and a level of indirection when creating machine operands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28107 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 19:14:44 +00:00
Chris Lattner
8b915b4ed2 Remove and simplify some more machineinstr/machineoperand stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28105 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 18:16:01 +00:00
Chris Lattner
2d90ac7ca6 Rename MO_VirtualRegister -> MO_Register. Clean up immediate handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28104 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 18:05:43 +00:00
Chris Lattner
e53f4a055f Move some methods out of MachineInstr into MachineOperand
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28102 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 17:52:23 +00:00
Chris Lattner
e3158308e0 Fix Transforms/InstCombine/2006-05-04-DemandedBitCrash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28101 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 17:33:35 +00:00
Chris Lattner
63b3d7113d There shalt be only one "immediate" operand type!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28099 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 17:21:20 +00:00
Chris Lattner
ceb408f6a2 Change "value" in MachineOperand to be a GlobalValue, as that is the only
thing that can be in it.  Remove a dead method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28098 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 17:02:51 +00:00
Chris Lattner
e45aa737ba Revert Nate's CR patch from last night, which caused many regressions (e.g. fhourstones).
Loading and storing off R0 isn't what we wanted.  Also, taking some CR's out of
CRRC seems to cause failures as well.  Further investigation is required.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28097 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 16:56:45 +00:00
Jeff Cohen
10efcfabf1 Make external globals public; other minor cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28096 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 16:20:22 +00:00
Jeff Cohen
a6e24d8caf Make Intel syntax the default when LLVM is built with VC++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28095 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 16:19:27 +00:00
Chris Lattner
4efeab208c Remove a bunch more dead V9 specific stuff
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28094 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 01:26:39 +00:00
Chris Lattner
ea50fabfd4 Remove a bunch more SparcV9 specific stuff
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28093 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 01:15:02 +00:00
Chris Lattner
34fb2cad46 Remove some more V9-specific stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28092 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 00:49:59 +00:00
Chris Lattner
10f3597c4e Remove some more unused stuff from MachineInstr that was leftover from V9.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28091 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 00:44:25 +00:00
Chris Lattner
0e57629a93 Simplify handling of relocations
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28090 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-04 00:42:08 +00:00
Evan Cheng
9e062ed516 Use movsd to shuffle in the lowest two elements of a v4f32 / v4i32 vector when
movlps cannot be used (e.g. when load from m64 has multiple uses).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28089 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 20:32:03 +00:00
Chris Lattner
5a032de387 Change from using MachineRelocation ctors to using static methods
in MachineRelocation to create Relocations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28088 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 20:30:20 +00:00
Chris Lattner
d2d5c76753 minor cleanups, no functionality change
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28087 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 18:55:56 +00:00
Chris Lattner
93e5c284d7 inline a simple method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28083 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 17:21:32 +00:00
Chris Lattner
b4432f3d47 Suck block address tracking out of targets into the JIT Emitter. This
simplifies the MachineCodeEmitter interface just a little bit and makes
BasicBlocks work like constant pools and jump tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28082 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 17:10:41 +00:00
Chris Lattner
5c488182da Fix a bug in Owen's checkin that broke the CBE on all non sparc v9 platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28081 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 05:48:41 +00:00
Nate Begeman
67977ad19c Teach the x86 jit how to handle jump tables not directly used by a jump
instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28080 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 04:52:47 +00:00
Nate Begeman
f4360a4789 Finish up the initial jump table implementation by allowing jump tables to
not be 100% dense.  Increase the minimum threshold for the number of cases
in a switch statement from 4 to 6 in order to create a jump table.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28079 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 03:48:02 +00:00
Evan Cheng
c9a83a45ba Bottom up register pressure reduction work: clean up some hacks and enhanced
the heuristic to further reduce spills for several test cases. (Note, it may
not necessarily translate to runtime win!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28076 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 02:10:45 +00:00
Owen Anderson
a69571c799 Refactor TargetMachine, pushing handling of TargetData into the target-specific subclasses. This has one caller-visible change: getTargetData() now returns a pointer instead of a reference.
This fixes PR 759.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28074 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 01:29:57 +00:00
Chris Lattner
0eb4d6b52e Align function bodies correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28073 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 01:03:20 +00:00
Chris Lattner
e6fdcbfc47 Simplify some code. Don't add memory blocks to the Blocks list twice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28071 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 00:54:49 +00:00
Chris Lattner
9b4c96d45d Add assertions that verify that the actual arguments to a call or invoke match
the prototype of the called function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28070 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 00:48:22 +00:00
Chris Lattner
af1563fb62 Change the BasicBlockAddrs map to be a vector, indexed by MBB number.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28069 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 00:32:55 +00:00
Chris Lattner
23118b649e Keep the alpha JIT similar to the PPC/X86 jits
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28068 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 00:31:21 +00:00
Chris Lattner
32ca55f3bc Simplify some code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28066 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 00:13:06 +00:00
Chris Lattner
f75f9be3fb Several related changes:
1. Change several methods in the MachineCodeEmitter class to be pure virtual.
2. Suck emitConstantPool/initJumpTableInfo into startFunction, removing them
   from the MachineCodeEmitter interface, and reducing the amount of target-
   specific code.
3. Change the JITEmitter so that it allocates constantpools and jump tables
   *right* next to the functions that they belong to, instead of in a separate
   pool of memory.  This makes all memory for a function be contiguous, and
   means the JITEmitter only tracks one block of memory now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28065 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-02 23:22:24 +00:00
Nate Begeman
a11a92976a Remove some stuff from the README
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28063 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-02 22:43:31 +00:00
Chris Lattner
f5d438c1f0 Do not make the JIT memory manager manage the memory for globals. Instead
just have the JIT malloc them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28062 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-02 21:57:51 +00:00
Chris Lattner
a726c7f1fd Minor cleanups, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28061 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-02 21:44:14 +00:00
Chris Lattner
d3f0aefc33 Fix a purely hypothetical problem (for now): emitWord emits in the host
byte format.  This doesn't work when using the code emitter in a cross target
environment.  Since the code emitter is only really used by the JIT, this
isn't a current problem, but if we ever start emitting .o files, it would be.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28060 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-02 19:14:47 +00:00