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94de7bc3aad46136ea5818b4364ae1cb8ee11912
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7793 Commits

Author SHA1 Message Date
Chris Lattner
94de7bc3aa get def use info more correct. 
llvm-svn: 45821
 2008-01-10 05:12:37 +00:00
Chris Lattner
c72335878d add SDNPMayLoad to the 'load' sdnode definition. This is enough to get all the x86 
instructions (with patterns) that load memory marked, for example.

llvm-svn: 45818
 2008-01-10 04:44:32 +00:00
Chris Lattner
f171482a66 verify that the frame index is immutable before remat'ing (still disabled) 
or being side-effect free.

llvm-svn: 45816
 2008-01-10 04:16:31 +00:00
Evan Cheng
a26552493b Mark byval parameter stack objects mutable for now. 
llvm-svn: 45813
 2008-01-10 02:24:25 +00:00
Dale Johannesen
7ecb3b79c7 Emit unused EH frames for weak definitions on Darwin, 
because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811
 2008-01-10 02:03:30 +00:00
Evan Cheng
fead113fe0 Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like. 
llvm-svn: 45798
 2008-01-10 00:37:26 +00:00
Chris Lattner
ec79bba97f Fix PR1845 and rdar://5676945. Generic vectors smaller 
than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 

llvm-svn: 45796
 2008-01-10 00:30:57 +00:00
Evan Cheng
73d1017871 Remove comments that do not correspond to anything after recent refactoring. 
llvm-svn: 45792
 2008-01-10 00:09:10 +00:00
Chris Lattner
9129f51f9b add a testcase 
llvm-svn: 45768
 2008-01-09 00:37:18 +00:00
Chris Lattner
45e5032b1d add a note 
llvm-svn: 45766
 2008-01-09 00:17:57 +00:00
Duncan Sands
bb956ca730 Use size_t to store Pos, avoid truncating value 
on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.

llvm-svn: 45746
 2008-01-08 10:06:15 +00:00
Chris Lattner
89f36e6b21 Finally implement correct ordered comparisons for PPC, even though 
the code generated is not wonderful.  This turns a miscompilation into
a code quality bug (noted in the ppc readme).  This fixes PR642, which
is over 2 years old (!).  Nate, please review this.

llvm-svn: 45742
 2008-01-08 06:46:30 +00:00
Evan Cheng
00300ddff1 Minor fix to enable x86-64 pic jit (still fails for other reasons). 
llvm-svn: 45734
 2008-01-08 02:07:10 +00:00
Evan Cheng
4951da49aa Fix a x86-64 static codegen bug. This fixes a lot of x86-64 jit failures. 
llvm-svn: 45733
 2008-01-08 02:06:11 +00:00
Bill Wendling
3b6fe5fa8d Silence warning about loss of precision. 
llvm-svn: 45731
 2008-01-08 00:52:29 +00:00
Evan Cheng
7250120177 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
ba734518c1 add a new bit. 
llvm-svn: 45726
 2008-01-07 23:16:55 +00:00
Evan Cheng
8242168ef4 Unbreak x86-64. 
llvm-svn: 45725
 2008-01-07 23:08:23 +00:00
Chris Lattner
ef81aa75f6 add a note that is important for some fp apps. 
llvm-svn: 45723
 2008-01-07 21:59:58 +00:00
Chris Lattner
730d088be1 possible switch lowering improvement. 
llvm-svn: 45720
 2008-01-07 21:38:14 +00:00
Duncan Sands
d19a6f4836 Add missing newline at EOF. 
llvm-svn: 45712
 2008-01-07 19:13:36 +00:00
Duncan Sands
d8d4170f84 Unbreak x86-32 darwin long double! 
llvm-svn: 45703
 2008-01-07 16:36:38 +00:00
Duncan Sands
28bf7ac219 Fix long double support on x86-32 linux. 
llvm-svn: 45701
 2008-01-07 13:44:22 +00:00
Bill Wendling
a3bdad153f 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
d7857eafd0 add a note 
llvm-svn: 45698
 2008-01-07 07:46:23 +00:00
Chris Lattner
03ad885039 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
e99a6caee4 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
d004f54155 use predicate. 
llvm-svn: 45691
 2008-01-07 06:37:29 +00:00
Chris Lattner
f376c99ea0 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
8c69898157 remove a dead field. 
llvm-svn: 45685
 2008-01-07 04:57:42 +00:00
Chris Lattner
6077962101 no need to explicitly clear these fields. 
llvm-svn: 45683
 2008-01-07 04:55:09 +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
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
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
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
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
10324d0175 rename isStore -> mayStore to more accurately reflect what it captures. 
llvm-svn: 45656
 2008-01-06 08:36:04 +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
Bill Wendling
5fa2c64b78 Fix comment. 
llvm-svn: 45638
 2008-01-05 23:30:51 +00:00
Nate Begeman
22950d26f5 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
9231958391 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
be984cf10b 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
e0f0c4aa02 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
d4738ee8e1 simplify some code by using shorter accessors. 
llvm-svn: 45622
 2008-01-05 05:28:30 +00:00
Chris Lattner
86f4a2e4f2 revert my previous patch. 
llvm-svn: 45621
 2008-01-05 05:26:26 +00:00