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972 Commits

Author SHA1 Message Date
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
Dan Gohman ecd40a34e2 Remove unnecessary parens. 
llvm-svn: 101010
 2010-04-12 02:24:01 +00:00
Evan Cheng ebe47c872f Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates. 
llvm-svn: 100751
 2010-04-08 07:37:57 +00:00
Chris Lattner 3b9f02a2aa Three changes: 
1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.

llvm-svn: 100605
 2010-04-07 05:20:54 +00:00
Mon P Wang bf86224d5e Remove assert to treat memmove and memset like memcpy 
llvm-svn: 100521
 2010-04-06 08:27:51 +00:00
Evan Cheng 272a2f8432 Fix an obvious copy-n-paste bug. It's not known to cause any miscompilation. 
llvm-svn: 100494
 2010-04-05 23:33:29 +00:00
Dan Gohman f38547c83f Add a comment. 
llvm-svn: 100459
 2010-04-05 20:24:08 +00:00
Chris Lattner bc217873e3 lowering a volatile llvm.memcpy to a libc memcpy is ok. 
PR6779

llvm-svn: 100457
 2010-04-05 20:11:45 +00:00
Chris Lattner fb964e57e5 remove the now-redundant MMI pointer in SelectionDAG. 
llvm-svn: 100419
 2010-04-05 06:19:28 +00:00
Chris Lattner 6361414c88 remove some redundant MMI arguments. 
llvm-svn: 100417
 2010-04-05 06:10:13 +00:00