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39600 Commits

Author SHA1 Message Date
Chris Lattner 6f8713decb the name field of instructions is never set to a non-empty string, 
just unconditionally use the def name of the instruction.

llvm-svn: 45684
 2008-01-07 04:57:31 +00:00
Chris Lattner 6077962101 no need to explicitly clear these fields. 
llvm-svn: 45683
 2008-01-07 04:55:09 +00:00
Nate Begeman f7c3ff6f80 Fix typo 
llvm-svn: 45682
 2008-01-07 04:01:26 +00:00
Gordon Henriksen c75405bdb3 Removing a leaked file. 
llvm-svn: 45681
 2008-01-07 03:23:52 +00:00
Chris Lattner b0d06b4381 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor 
llvm-svn: 45680
 2008-01-07 03:13:06 +00:00
Chris Lattner f0f438a517 remove MachineOpCode typedef. 
llvm-svn: 45679
 2008-01-07 02:48:55 +00:00
Chris Lattner d34c47653e remove some uses of MachineOpCode, move getSchedClass 
into TargetInstrDescriptor from TargetInstrInfo.

llvm-svn: 45678
 2008-01-07 02:46:03 +00:00
Chris Lattner e55e115616 Add predicates methods to TargetOperandInfo, and switch all clients 
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.

llvm-svn: 45677
 2008-01-07 02:39:19 +00:00
Gordon Henriksen c7e991b7c3 Setting GlobalDirective in TargetAsmInfo by default rather than 
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45676
 2008-01-07 02:31:11 +00:00
Gordon Henriksen efb08802ec Deleting an empty file. Thanks, /usr/bin/patch! 
llvm-svn: 45675
 2008-01-07 02:29:04 +00:00
Chris Lattner a98c679de0 Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects 
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674
 2008-01-07 01:56:04 +00:00
Owen Anderson 0ec92e9d64 Update CodeGen for MRegisterInfo --> TargetInstrInfo changes. 
llvm-svn: 45673
 2008-01-07 01:35:56 +00:00
Owen Anderson 2a3be7bb6c Move even more functionality from MRegisterInfo into TargetInstrInfo. 
Some day I'll get it all moved over...

llvm-svn: 45672
 2008-01-07 01:35:02 +00:00
Gordon Henriksen 2d684b1fbf Ammending r45669 with a missing file. 
llvm-svn: 45671
 2008-01-07 01:33:09 +00:00
Gordon Henriksen 6047b6e140 With this patch, the LowerGC transformation becomes the 
ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.

Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):

; shadowstack prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    $___gc_fun, 20(%esp)
        movl    $0, 24(%esp)
        movl    $0, 28(%esp)
        movl    $0, 32(%esp)
        movl    $0, 36(%esp)
        movl    $0, 40(%esp)
        movl    $0, 44(%esp)
        movl    $0, 48(%esp)
        movl    $0, 52(%esp)
        movl    %ecx, 16(%esp)
        leal    16(%esp), %ecx
        movl    %ecx, (%eax)

; shadowstack loop overhead
        (none)

; shadowstack epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; shadowstack metadata
        .align  3
___gc_fun:                              # __gc_fun
        .long   8
        .space  4

In comparison to LowerGC:

; lowergc prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    %ecx, 48(%esp)
        movl    $8, 52(%esp)
        movl    $0, 60(%esp)
        movl    $0, 56(%esp)
        movl    $0, 68(%esp)
        movl    $0, 64(%esp)
        movl    $0, 76(%esp)
        movl    $0, 72(%esp)
        movl    $0, 84(%esp)
        movl    $0, 80(%esp)
        movl    $0, 92(%esp)
        movl    $0, 88(%esp)
        movl    $0, 100(%esp)
        movl    $0, 96(%esp)
        movl    $0, 108(%esp)
        movl    $0, 104(%esp)
        movl    $0, 116(%esp)
        movl    $0, 112(%esp)

; lowergc loop overhead
        leal    44(%esp), %eax
        movl    %eax, 56(%esp)
        leal    40(%esp), %eax
        movl    %eax, 64(%esp)
        leal    36(%esp), %eax
        movl    %eax, 72(%esp)
        leal    32(%esp), %eax
        movl    %eax, 80(%esp)
        leal    28(%esp), %eax
        movl    %eax, 88(%esp)
        leal    24(%esp), %eax
        movl    %eax, 96(%esp)
        leal    20(%esp), %eax
        movl    %eax, 104(%esp)
        leal    16(%esp), %eax
        movl    %eax, 112(%esp)

; lowergc epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; lowergc metadata
        (none)

llvm-svn: 45670
 2008-01-07 01:30:53 +00:00
Gordon Henriksen 5180e85675 Enabling the target-independent garbage collection infrastructure by hooking it 
up to the various compiler pipelines.

This doesn't actually add support for any GC algorithms, which means it 
temporarily breaks a few tests. To be fixed shortly.

llvm-svn: 45669
 2008-01-07 01:30:38 +00:00
Chris Lattner b296b0f1c1 The pic base can't be duplicated. 
llvm-svn: 45668
 2008-01-06 23:49:32 +00:00
Chris Lattner a4ce4f6987 rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate. 
llvm-svn: 45667
 2008-01-06 23:38:27 +00:00
Chris Lattner 4d3b0f579c rearrange some code. 
llvm-svn: 45666
 2008-01-06 22:50:31 +00:00
Chris Lattner e2949f42d3 some simplifications/cleanups to ?: sema. 
llvm-svn: 45665
 2008-01-06 22:42:25 +00:00
Chris Lattner cfb6f430b6 Emit warnings like "dereferencing void pointer" instead of trying to 
pretty print the type name for void.

llvm-svn: 45664
 2008-01-06 22:21:46 +00:00
Gordon Henriksen db911e9037 Modify Makefile.rules to allow makefiles to prepend to C.Flags and 
fiends. Change Makefile.ocaml to not touch CFLAGS.

llvm-svn: 45663
 2008-01-06 21:54:35 +00:00
Chris Lattner 2a1993fb2c improve description of alignment, patch by Alain Frisch. 
llvm-svn: 45662
 2008-01-06 21:04:43 +00:00
Chris Lattner ec56402557 Fix typo noticed by 'Danny' in PR1901 
llvm-svn: 45661
 2008-01-06 19:51:52 +00:00
Chris Lattner 466e8ebcc7 back out accidental commit. 
llvm-svn: 45660
 2008-01-06 19:19:32 +00:00
Chris Lattner 460d863ba5 fix an accidental commit that broke all the testers :( 
llvm-svn: 45659
 2008-01-06 19:18:52 +00:00
Duncan Sands 404eb05247 The transform that tries to turn calls to bitcast functions into 
direct calls bails out unless caller and callee have essentially
equivalent parameter attributes.  This is illogical - the callee's
attributes should be of no relevance here.  Rework the logic, which
incidentally fixes a crash when removed arguments have attributes.

llvm-svn: 45658
 2008-01-06 18:27:01 +00:00
Duncan Sands 55e5090fe8 When transforming a call to a bitcast function into 
a direct call with cast parameters and cast return
value (if any), instcombine was prepared to cast any
non-void return value into any other, whether castable
or not.  Add a new predicate for testing whether casting
is valid, and check it both for the return value and
(as a cleanup) for the parameters.

llvm-svn: 45657
 2008-01-06 10:12:28 +00:00
Chris Lattner 10324d0175 rename isStore -> mayStore to more accurately reflect what it captures. 
llvm-svn: 45656
 2008-01-06 08:36:04 +00:00
Duncan Sands 1694a53c5d Remove an unused variable. 
llvm-svn: 45655
 2008-01-06 07:43:13 +00:00
Chris Lattner a348f55ec6 Change the 'isStore' inferrer to look for 'SDNPMayStore' 
instead of "ISD::STORE".  This allows us to mark target-specific dag
nodes as storing (such as ppc byteswap stores).  This allows us to remove
more explicit isStore flags from the .td files.

Finally, add a warning for when a .td file contains an explicit 
isStore and tblgen is able to infer it.

llvm-svn: 45654
 2008-01-06 06:44:58 +00:00
Chris Lattner f4d55ec4e8 remove explicit isStore flags that are now inferrable. 
llvm-svn: 45653
 2008-01-06 05:55:01 +00:00
Chris Lattner e20f380fbf remove some isStore flags that are now inferred automatically. 
llvm-svn: 45652
 2008-01-06 05:53:26 +00:00
Chris Lattner e9dba0920b describe isStore and simplify the implementation of hasUnmodelledSideEffects. 
No functionality change. 

llvm-svn: 45651
 2008-01-06 05:43:21 +00:00
Chris Lattner 89c6566577 set the 'isstore' flag for instructions whose pattern is an 
intrinsic that writes to memory.

llvm-svn: 45650
 2008-01-06 05:36:50 +00:00
Nick Lewycky 0e519bb555 Accept both %y, %x and %x, %y as valid answers. 
llvm-svn: 45649
 2008-01-06 03:12:44 +00:00
Chris Lattner e457fd1e9b remove some old hacky code that tried to infer whether a store 
occured in a pattern, but failed miserably.  The new code works for
any instruction that has a store in its pattern, including all the 
x86 mem op mem instructions.

The only target-independent code that uses this is branch folding,
so this won't change anything in practice.

llvm-svn: 45648
 2008-01-06 02:16:26 +00:00
Chris Lattner 27a4c1515a rearrange some code to allow inferring instr info from the pattern of the instr, but don't do so yet. 
llvm-svn: 45647
 2008-01-06 01:53:37 +00:00
Chris Lattner d5326def4a improve const correctness. 
llvm-svn: 45646
 2008-01-06 01:52:22 +00:00
Chris Lattner ea2d52d867 Split the impl of CodeGenInstruction out to its own .cpp file, add a getName() accessor. 
llvm-svn: 45645
 2008-01-06 01:35:39 +00:00
Chris Lattner 85467a17ae final cleanups. 
llvm-svn: 45644
 2008-01-06 01:21:51 +00:00
Chris Lattner 626b89daa4 further simplifications and cleanup 
llvm-svn: 45643
 2008-01-06 01:20:13 +00:00
Chris Lattner 827efa451f simplify some code 
llvm-svn: 45642
 2008-01-06 01:12:44 +00:00
Chris Lattner ab3242fd46 rename CodegenDAGPatterns -> CodeGenDAGPatterns 
llvm-svn: 45641
 2008-01-06 01:10:31 +00:00
Chris Lattner e59a3c79e5 split enum emission out from InstrInfoEmitter into it's own tblgen backend. 
llvm-svn: 45640
 2008-01-06 00:49:05 +00:00
Chris Lattner 78ac0747e7 fix build on case sensitive file systems. 
llvm-svn: 45639
 2008-01-05 23:37:52 +00:00
Bill Wendling 5fa2c64b78 Fix comment. 
llvm-svn: 45638
 2008-01-05 23:30:51 +00:00
Chris Lattner 7eac714b41 make this build with newer gcc's 
llvm-svn: 45637
 2008-01-05 23:29:51 +00:00
Chris Lattner 7980bba549 now that computing CodegenDAGPatterns doesn't implicitly print stuff 
out, DAGISelEmitter can compute it in its ctor, which simplifies some code.

Now we can use CodegenDAGPatterns in other parts of tblgen that want access
to dag pattern info, woo!

llvm-svn: 45636
 2008-01-05 22:58:54 +00:00
Chris Lattner cc43e79bcd move Node Transformation printing from CodeGenDAGPatterns -> DAGISelEmitter. 
The only difference in output is that we now print them in alphabetical 
order instead of reverse alphabetical order.

llvm-svn: 45635
 2008-01-05 22:54:53 +00:00