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981 Commits

Author SHA1 Message Date
Chris Lattner
a4f199720d finish pushing MachinePointerInfo through selectiondags. At this point, 
I think I've audited all uses, so it should be dependable for address spaces,
and the pointer+offset info should also be accurate when there.

llvm-svn: 114464
 2010-09-21 18:58:22 +00:00
Chris Lattner
6963c1f789 eliminate an old SelectionDAG::getTruncStore method, propagating 
MachinePointerInfo around more.

llvm-svn: 114452
 2010-09-21 17:42:31 +00:00
Chris Lattner
5e39ffd02f eliminate last SelectionDAG::getLoad old entrypoint, on to stores. 
llvm-svn: 114450
 2010-09-21 17:28:52 +00:00
Chris Lattner
ea952f05a5 fix the code that infers SV info to be correct when dealing 
with an indexed load/store that has an offset in the index.

llvm-svn: 114449
 2010-09-21 17:24:05 +00:00
Chris Lattner
3d178ed4d4 propagate MachinePointerInfo through various uses of the old 
SelectionDAG::getExtLoad overload, and eliminate it.

llvm-svn: 114446
 2010-09-21 17:04:51 +00:00
Chris Lattner
1ffcf527c7 continue MachinePointerInfo'izing, eliminating use of one of the old 
getLoad overloads.

llvm-svn: 114443
 2010-09-21 16:36:31 +00:00
Chris Lattner
2510de2bea reimplement memcpy/memmove/memset lowering to use MachinePointerInfo 
instead of srcvalue/offset pairs.  This corrects SV info for mem 
operations whose size is > 32-bits.

llvm-svn: 114401
 2010-09-21 05:40:29 +00:00
Chris Lattner
bc419ba98f add overloads for SelectionDAG::getLoad, getStore, getTruncStore that take a 
MachinePointerInfo.  Among other virtues, this doesn't silently  truncate the
svoffset to 32-bits.

llvm-svn: 114399
 2010-09-21 05:10:45 +00:00
Chris Lattner
d2d58ada70 simplify interface to SelectionDAG::getMemIntrinsicNode, making it take a MachinePointerInfo 
llvm-svn: 114397
 2010-09-21 04:57:15 +00:00
Chris Lattner
15d84c460a chagne interface to SelectionDAG::getAtomic to take a MachinePointerInfo, 
eliminating some weird "infer a frame address" logic which was dead.

llvm-svn: 114396
 2010-09-21 04:53:42 +00:00
Chris Lattner
b5f4920979 force clients of MachineFunction::getMachineMemOperand to provide a 
MachinePointerInfo, propagating the type out a level of API.  Remove
the old MachineFunction::getMachineMemOperand impl.

llvm-svn: 114393
 2010-09-21 04:46:39 +00:00
Owen Anderson
b92b13d8a0 Invert the logic of reachesChainWithoutSideEffects(). What we want to check is that there is 
NO path to the destination containing side effects, not that SOME path contains no side effects.
In  practice, this only manifests with CombinerAA enabled, because otherwise the chain has little
to no branching, so "any" is effectively equivalent to "all".

llvm-svn: 114268
 2010-09-18 04:45:14 +00:00
Bruno Cardoso Lopes
d9ef4a1a24 zap unused method. x86 is the only user and already has a more powerfull version 
llvm-svn: 112571
 2010-08-31 02:36:20 +00:00
Oscar Fuentes
40b31ad3ee Prefix next' iterator operation with llvm::'. 
Fixes potential ambiguity problems on VS 2010.

Patch by nobled!

llvm-svn: 110029
 2010-08-02 06:00:15 +00:00
Dan Gohman
2e00e3b12d Make SDNode::dump() print a newline at the end. 
llvm-svn: 109234
 2010-07-23 16:37:47 +00:00
Gabor Greif
59f9970ba5 keep in 80 cols 
llvm-svn: 109122
 2010-07-22 17:18:03 +00:00
Evan Cheng
55f0c6b9fc Split -enable-finite-only-fp-math to two options: 
-enable-no-nans-fp-math and -enable-no-infs-fp-math. All of the current codegen fp math optimizations only care whether the fp arithmetics arguments and results can never be NaN.

llvm-svn: 108465
 2010-07-15 22:07:12 +00:00
Evan Cheng
1c349f18f8 Move getExtLoad() and (some) getLoad() DebugLoc argument after EVT argument for consistency sake. 
llvm-svn: 107820
 2010-07-07 22:15:37 +00:00
Devang Patel
a3ca21b228 Propagate debug loc. 
llvm-svn: 107710
 2010-07-06 22:08:15 +00:00
Evan Cheng
f3aeb2c22c Infer alignments of fixed frame objects when they are constructed. This ensures remat'ed loads from fixed slots have the right alignments. 
llvm-svn: 107591
 2010-07-04 18:52:05 +00:00
Rafael Espindola
2041abd958 When splitting a VAARG, remember its alignment. 
This produces terrible but correct code.

llvm-svn: 106952
 2010-06-26 18:22:20 +00:00
Duncan Sands
2dc70bea54 Remove variables which are assigned to but for which the value 
is not used.  Spotted by gcc-4.6.

llvm-svn: 106854
 2010-06-25 14:48:39 +00:00
Dan Gohman
463f26b4be Eliminate the other half of the BRCOND optimization, and update 
as many tests as possible.

llvm-svn: 106749
 2010-06-24 15:24:03 +00:00
Dan Gohman
df6b33e778 Eliminate the first have of the optimization which eliminates BRCOND 
when the condition is constant. This optimization shouldn't be
necessary, because codegen shouldn't be able to find dead control
paths that the IR-level optimizer can't find. And it's undesirable,
because it encourages bugpoint to leave "br i1 false" branches
in its output. And it wasn't updating the CFG.

I updated all the tests I could, but some tests are too reduced
and I wasn't able to meaningfully preserve them.

llvm-svn: 106748
 2010-06-24 15:04:11 +00:00
Dan Gohman
600f62b3ba Reapply r106634, now that the bug it exposed is fixed. 
llvm-svn: 106746
 2010-06-24 14:30:44 +00:00
Daniel Dunbar
4df321b7ad Revert r106263, "Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass,"... it was causing both 'file' (with clang) and 176.gcc (with llvm-gcc) to be miscompiled. 
llvm-svn: 106634
 2010-06-23 17:09:26 +00:00
Dan Gohman
dd41bba517 Use A.append(...) instead of A.insert(A.end(), ...) when A is a 
SmallVector, and other SmallVector simplifications.

llvm-svn: 106452
 2010-06-21 19:47:52 +00:00
Dan Gohman
96ca25eba5 Don't replace the old Ordering object with a new one; just clear() 
the old one.

llvm-svn: 106284
 2010-06-18 15:40:58 +00:00
Dan Gohman
a4f46b3ef8 Don't call clear() on DbgInfo when it's going to be deleted anyway. 
Don't replace the old DbgInfo with a new one when clear() on the
old one is sufficient.

llvm-svn: 106283
 2010-06-18 15:36:18 +00:00
Dan Gohman
92c11acdb8 Change UpdateNodeOperands' operand and return value from SDValue to 
SDNode *, since it doesn't care about the ResNo value.

llvm-svn: 106282
 2010-06-18 15:30:29 +00:00
Dan Gohman
b92156d5e4 Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass, 
which is faster, simpler, and less surprising.

llvm-svn: 106263
 2010-06-18 01:05:21 +00:00
Dan Gohman
0883789ec4 Handle ext(ext(x)) -> ext(x) immediately, since it's simple. 
llvm-svn: 106256
 2010-06-18 00:08:30 +00:00
Dan Gohman
b782caa393 Fill in missing support for ISD::FEXP, ISD::FPOWI, and friends. 
llvm-svn: 105283
 2010-06-01 18:35:14 +00:00
Chris Lattner
14c46517b5 fix PR6623: when optimizing for size, don't inline memcpy/memsets 
that are too large.  This causes the freebsd bootloader to be too
large apparently.

It's unclear if this should be an -Os or -Oz thing.  Thoughts welcome.

llvm-svn: 105228
 2010-05-31 17:30:14 +00:00
Chris Lattner
b4a773b452 the 'limit' argument to FindOptimalMemOpLowering is unsigned, not uint64_t. 
llvm-svn: 105226
 2010-05-31 17:12:23 +00:00
Dan Gohman
d16aa541af SelectionDAG shouldn't have a FunctionLoweringInfo member. RegsForValue 
shouldn't have a TargetLoweringInfo member. And FunctionLoweringInfo::set
doesn't needs its EnableFastISel argument.

llvm-svn: 105101
 2010-05-29 17:03:36 +00:00
Jim Grosbach
c98892fdaa Adjust eh.sjlj.setjmp to properly have a chain and to have an opcode entry in 
ISD::. No functional change.

llvm-svn: 104734
 2010-05-26 20:22:18 +00:00
Dale Johannesen
bb4656c05e Improve assertion messages. 
llvm-svn: 103882
 2010-05-15 18:38:02 +00:00
Dan Gohman
bb919dfb6b Implement a bunch more TargetSelectionDAGInfo infrastructure. 
Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and
EmitTargetCodeForMemmove out of TargetLowering and into
SelectionDAGInfo to exercise this.

llvm-svn: 103481
 2010-05-11 17:31:57 +00:00
Duncan Sands
e4d6670f6b Add an assertion to catch attempts to access off the end of the array. 
Based on a patch by Javier Martinez.

llvm-svn: 103391
 2010-05-10 04:54:28 +00:00
Dale Johannesen
51c1695a0a Fix PR 7087, and probably other things, by extending 
getConstantFP to accept the two supported long double
target types.  This was not the original intent, but
there are other places that assume this works and it's
easy enough to do.

llvm-svn: 103299
 2010-05-07 21:35:53 +00:00
Dan Gohman
e7dff14d5d Print debug information for SDNodes. 
llvm-svn: 103227
 2010-05-07 01:09:21 +00:00
Bill Wendling
de4b225093 EXTRACT_VECTOR_ELT of an INSERT_VECTOR_ELT may have the same index, but the 
indexes could be of a different value type. Or not even using the same SDNode
for the constant (weird, I know). Compare the actual values instead of the
pointers.

llvm-svn: 102791
 2010-04-30 22:19:17 +00:00
Dale Johannesen
e098352ed1 Add DBG_VALUE handling for byval parameters; this 
produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.

llvm-svn: 102372
 2010-04-26 20:06:49 +00:00
Dan Gohman
ad33d33719 Add another variant of this test which found a place where 
CodeGen's ComputeMaskedBits was being over-conservative when computing
bits for an ADD.

llvm-svn: 101963
 2010-04-21 00:19:28 +00:00
Dan Gohman
1e95790fd4 Give SelectionDAG a TargetMachine too, rather than having it 
fetch one from the MachineFunction.

llvm-svn: 101807
 2010-04-19 19:22:07 +00:00
Dan Gohman
8422e57baa Delete now-unnecessary const_casts. 
llvm-svn: 101637
 2010-04-17 15:32:28 +00:00
Dan Gohman
21cea8ac2e Use const qualifiers with TargetLowering. This eliminates several 
const_casts, and it reinforces the design of the Target classes being
immutable.

SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.

And PIC16's AsmPrinter no longer uses TargetLowering.

llvm-svn: 101635
 2010-04-17 15:26:15 +00:00
Dan Gohman
4d273f4519 Commit this, which should have accompanied 101531. 
llvm-svn: 101532
 2010-04-16 20:22:43 +00:00
Dan Gohman
bcaf681cde Add const qualifiers to CodeGen's use of LLVM IR constructs. 
llvm-svn: 101334
 2010-04-15 01:51:59 +00:00