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e859abc363
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7779 Commits

Author SHA1 Message Date
Bill Wendling
e859abc363 Silence warning about loss of precision. 
llvm-svn: 45731
 2008-01-08 00:52:29 +00:00
Evan Cheng
9de4f35e9f Only mark instructions that load a single value without extension as isSimpleLoad = 1. 
llvm-svn: 45727
 2008-01-07 23:56:57 +00:00
Chris Lattner
32934de862 add a new bit. 
llvm-svn: 45726
 2008-01-07 23:16:55 +00:00
Evan Cheng
ae2f627ea8 Unbreak x86-64. 
llvm-svn: 45725
 2008-01-07 23:08:23 +00:00
Chris Lattner
184daf9101 add a note that is important for some fp apps. 
llvm-svn: 45723
 2008-01-07 21:59:58 +00:00
Chris Lattner
66e631ace3 possible switch lowering improvement. 
llvm-svn: 45720
 2008-01-07 21:38:14 +00:00
Duncan Sands
7209d0c045 Add missing newline at EOF. 
llvm-svn: 45712
 2008-01-07 19:13:36 +00:00
Duncan Sands
fbbbb24641 Unbreak x86-32 darwin long double! 
llvm-svn: 45703
 2008-01-07 16:36:38 +00:00
Duncan Sands
93959fc16a Fix long double support on x86-32 linux. 
llvm-svn: 45701
 2008-01-07 13:44:22 +00:00
Bill Wendling
b94c1f2999 Operand 1 should be a register. We don't care if it's a preg, vreg, or 0. 
llvm-svn: 45699
 2008-01-07 08:05:29 +00:00
Chris Lattner
9aefefc673 add a note 
llvm-svn: 45698
 2008-01-07 07:46:23 +00:00
Chris Lattner
f83aae613c rename TargetInstrDescriptor -> TargetInstrDesc. 
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695
 2008-01-07 07:27:27 +00:00
Chris Lattner
57e851edfe Rename all the M_* flags to be namespace qualified enums, and switch 
all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.

llvm-svn: 45692
 2008-01-07 06:42:05 +00:00
Chris Lattner
e83299018e use predicate. 
llvm-svn: 45691
 2008-01-07 06:37:29 +00:00
Chris Lattner
9b987de2c5 rename hasVariableOperands() -> isVariadic(). Add some comments. 
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.

llvm-svn: 45687
 2008-01-07 05:19:29 +00:00
Chris Lattner
354275d0b2 remove a dead field. 
llvm-svn: 45685
 2008-01-07 04:57:42 +00:00
Chris Lattner
4421b821f5 no need to explicitly clear these fields. 
llvm-svn: 45683
 2008-01-07 04:55:09 +00:00
Chris Lattner
9d38dfa4a5 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor 
llvm-svn: 45680
 2008-01-07 03:13:06 +00:00
Chris Lattner
55343065e3 remove MachineOpCode typedef. 
llvm-svn: 45679
 2008-01-07 02:48:55 +00:00
Chris Lattner
93e1e6ee12 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
Chris Lattner
f7f96d818f 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
f19692b2f6 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
88a41c672b 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
6b6e6f1f6e The pic base can't be duplicated. 
llvm-svn: 45668
 2008-01-06 23:49:32 +00:00
Chris Lattner
14310afe42 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
5489888580 rename isStore -> mayStore to more accurately reflect what it captures. 
llvm-svn: 45656
 2008-01-06 08:36:04 +00:00
Chris Lattner
8b4b75c771 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
2bb919b542 remove explicit isStore flags that are now inferrable. 
llvm-svn: 45653
 2008-01-06 05:55:01 +00:00
Chris Lattner
9f8735181f remove some isStore flags that are now inferred automatically. 
llvm-svn: 45652
 2008-01-06 05:53:26 +00:00
Bill Wendling
703a1fc174 Fix comment. 
llvm-svn: 45638
 2008-01-05 23:30:51 +00:00
Nate Begeman
ff49dc59ff Remove an incorrect optimization that is performed correctly by 
the target independent legalizer.

llvm-svn: 45631
 2008-01-05 20:51:30 +00:00
Gordon Henriksen
f4e137838b Refactoring the x86 and x86-64 calling convention implementations, 
unifying the copied algorithms and saving over 500 LOC. There should
be no functionality change, but please test on your favorite x86
target.

llvm-svn: 45627
 2008-01-05 16:56:59 +00:00
Bill Wendling
ecf0f85985 Chris and Evan noticed that this check was compleatly fubared. I was 
checking that there was a from a global instead of a load from the stub
for a global, which is the one that's safe to hoist.

Consider this program:

volatile char G[100];
int B(char *F, int N) {
  for (; N > 0; --N)
    F[N] = G[N];
}

In static mode, we shouldn't be hoisting the load from G:

$ llc -relocation-model=static -o - a.bc -march=x86 -machine-licm

LBB1_1: # bb.preheader
        leal    -1(%eax), %edx
        testl   %edx, %edx
        movl    $1, %edx
        cmovns  %eax, %edx
        xorl    %esi, %esi
LBB1_2: # bb
        movb    _G(%eax), %bl
        movb    %bl, (%ecx,%eax)

llvm-svn: 45626
 2008-01-05 09:18:04 +00:00
Chris Lattner
f1493e7b58 enable sinking and licm of loads from the argument area. I'd like to enable this 
for remat, but can't due to an RA bug.

llvm-svn: 45623
 2008-01-05 06:10:42 +00:00
Chris Lattner
aad6c09a14 simplify some code by using shorter accessors. 
llvm-svn: 45622
 2008-01-05 05:28:30 +00:00
Chris Lattner
6e948ea2e6 revert my previous patch. 
llvm-svn: 45621
 2008-01-05 05:26:26 +00:00
Chris Lattner
86ca5928b5 factor some code better to avoid redundancy between 
isReallySideEffectFree and isReallyTriviallyReMaterializable.  Why is a load from
a global considered side-effect-free but not rematable?

llvm-svn: 45620
 2008-01-05 05:19:56 +00:00
Chris Lattner
6ad8e32f6b getting the pic base has no side effects. 
llvm-svn: 45618
 2008-01-05 03:54:32 +00:00
Evan Cheng
759f389846 X86 JIT PIC jumptable support. 
llvm-svn: 45616
 2008-01-05 02:26:58 +00:00
Evan Cheng
5b9282f3b5 Combine MovePCtoStack + POP32r into one instruction MOVPC32r so it can be moved if needed. 
llvm-svn: 45605
 2008-01-05 00:41:47 +00:00
Owen Anderson
2adf8c5533 Move some more functionality from MRegisterInfo to TargetInstrInfo. 
llvm-svn: 45603
 2008-01-04 23:57:37 +00:00
Evan Cheng
6dbcca7903 Unbreak tailcall opt in JIT. 
llvm-svn: 45576
 2008-01-04 10:50:28 +00:00
Evan Cheng
7322e4dec4 X86 PIC JIT support fixes: encoding bugs, add lazy pointer stubs support. 
llvm-svn: 45575
 2008-01-04 10:46:51 +00:00
Evan Cheng
627a9455a6 Correct order of parameters. 
llvm-svn: 45562
 2008-01-04 02:22:21 +00:00
Gordon Henriksen
d3af8e0ab3 First steps in in X86 calling convention cleanup. 
llvm-svn: 45536
 2008-01-03 16:47:34 +00:00
Evan Cheng
fb2bc4fc95 Change MachineRelocation::DoesntNeedFnStub to NeedStub. This fields will be used 
for non-function GV relocations that require function address stubs (e.g. Mac OS X in non-static mode).

llvm-svn: 45527
 2008-01-03 02:56:28 +00:00
Evan Cheng
ba1fd9fc76 X86 PIC JIT bug fix: relocations for constantpool and jumptable. 
llvm-svn: 45515
 2008-01-02 23:38:59 +00:00
Bill Wendling
92d8ff0471 Machine LICM will check that operands are defined outside of the loop. Also 
check that register isn't 0 before going further.

llvm-svn: 45498
 2008-01-02 21:10:40 +00:00
Chris Lattner
4a0d9c7836 darwin9 and above support aligned common symbols. 
llvm-svn: 45494
 2008-01-02 19:44:55 +00:00
Chris Lattner
abd12447f8 leopard and above support alignment for common symbols. 
llvm-svn: 45493
 2008-01-02 19:35:16 +00:00