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4610 Commits

Author SHA1 Message Date
Dale Johannesen
a5989f8e22 In asm's, output operands with matching input constraints 
have to be registers, per gcc documentation.  This affects
the logic for determining what "g" should lower to.  PR 7393.
A couple of existing testcases are affected.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107079 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 22:09:45 +00:00
Rafael Espindola
72d13ff755 When splitting a VAARG, remember its alignment. 
This produces terrible but correct code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106952 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-26 18:22:20 +00:00
Evan Cheng
13151432ed Change if-conversion block size limit checks to add some flexibility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106901 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 22:42:03 +00:00
Dale Johannesen
1784d160e4 The hasMemory argument is irrelevant to how the argument 
for an "i" constraint should get lowered; PR 6309.  While
this argument was passed around a lot, this is the only
place it was used, so it goes away from a lot of other
places.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106893 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 21:55:36 +00:00
Duncan Sands
b447c4e65b Remove variables which are assigned to but for which the value 
is not used.  Spotted by gcc-4.6.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106854 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 14:48:39 +00:00
Gabor Greif
0635f35114 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 09:38:13 +00:00
Gabor Greif
1518444f0c use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106828 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 08:24:59 +00:00
Gabor Greif
d3f526c04a prune an include 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106827 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 08:16:50 +00:00
Bill Wendling
10707f3b44 It's possible that a flag is added to the SDNode that points back to the 
original SDNode. This is badness. Also, this function allows one SDNode to point
multiple flags to another SDNode. Badness as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106793 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 22:00:37 +00:00
Dan Gohman
deca052d9d Simplify this code; switch lowering shouldn't produce cases 
which trivially fold away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 17:08:31 +00:00
Dan Gohman
ee1c870778 Eliminate the other half of the BRCOND optimization, and update 
as many tests as possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106749 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:24:03 +00:00
Dan Gohman
102f3851bb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106748 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:04:11 +00:00
Dan Gohman
4e39e9da0f Reapply r106634, now that the bug it exposed is fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106746 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:30:44 +00:00
Dan Gohman
8e0163ac1e Optimize the "bit test" code path for switch lowering in the 
case where the bit mask has exactly one bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106716 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 02:06:24 +00:00
Bill Wendling
151d26d15d MorphNodeTo doesn't preserve the memory operands. Because we're morphing a node 
into the same node, but with different non-memory operands, we need to replace
the memory operands after it's finished morphing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106643 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 18:16:24 +00:00
Daniel Dunbar
cbe762b5d1 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106634 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 17:09:26 +00:00
Jim Grosbach
9a526495e0 Some targets don't require the fencing MEMBARRIER instructions surrounding 
atomic intrinsics, either because the use locking instructions for the
atomics, or because they perform the locking directly. Add support in the
DAG combiner to fold away the fences.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106630 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 16:07:42 +00:00
Dan Gohman
403a8cdda5 Use A.append(...) instead of A.insert(A.end(), ...) when A is a 
SmallVector, and other SmallVector simplifications.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 19:47:52 +00:00
Dan Gohman
c7bd7b7f12 Revert r106422, which is breaking the non-fast-isel path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106423 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 16:02:28 +00:00
Dan Gohman
faeb0e7448 More changes for non-top-down fast-isel. 
Split the code for materializing a value out of
SelectionDAGBuilder::getValue into a helper function, so that it can
be used in other ways. Add a new getNonRegisterValue function which
uses it, for use in code which doesn't want a CopyFromReg even
when FuncMap.ValueMap already has an entry for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106422 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 15:13:54 +00:00
Dan Gohman
3193a689db Do one lookup instead of two. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 14:21:47 +00:00
Dan Gohman
37db6cdaea Generalize this to look in the regular ValueMap in addition to 
the LocalValueMap, to make it more flexible when fast-isel isn't
proceding straight top-down.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 14:17:46 +00:00
Dan Gohman
db4971259c Teach regular and fast isel to set dead flags on unused implicit defs 
on calls and similar instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106353 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 23:28:01 +00:00
Jim Grosbach
ef6eb9c7ab back-end libcall handling for ATOMIC_SWAP (__sync_lock_test_and_set) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 23:03:10 +00:00
Evan Cheng
a845706dc1 Fix cross initialization compilation error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106324 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 22:01:37 +00:00
Jim Grosbach
e03262fcfc Add Expand-to-libcall support for additional atomics. This covers the usual 
entries used by llvm-gcc. *_[U]MIN and such can be added later if needed.

This enables the front ends to simplify handling of the atomic intrinsics by
removing the target-specific decision about which targets can handle the
intrinsics.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106321 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 21:43:38 +00:00
Dan Gohman
927f866105 Minor code simplifications. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106286 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 16:00:29 +00:00
Dan Gohman
03c3dc7b68 Give NamedRegionTimer an Enabled flag, allowing all its clients to 
switch from this:

  if (TimePassesIsEnabled) {
    NamedRegionTimer T(Name, GroupName);
    do_something();
  } else {
    do_something(); // duplicate the code, this time without a timer!
  }

to this:

  {
    NamedRegionTimer T(Name, GroupName, TimePassesIsEnabled);
    do_something();
  }


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106285 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 15:56:31 +00:00
Dan Gohman
27445f0375 Don't replace the old Ordering object with a new one; just clear() 
the old one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106284 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 15:40:58 +00:00
Dan Gohman
c97df860dd 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106283 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 15:36:18 +00:00
Dan Gohman
027657db7c Change UpdateNodeOperands' operand and return value from SDValue to 
SDNode *, since it doesn't care about the ResNo value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106282 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 15:30:29 +00:00
Dan Gohman
e368b460a2 Eliminate unnecessary uses of getZExtValue(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106279 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:22:04 +00:00
Dan Gohman
7720cb3823 isValueValidForType can be a static member function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106278 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:01:07 +00:00
Dan Gohman
8a7f7426ee Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass, 
which is faster, simpler, and less surprising.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106263 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 01:05:21 +00:00
Dan Gohman
9e86a73568 Handle ext(ext(x)) -> ext(x) immediately, since it's simple. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106256 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 00:08:30 +00:00
Stuart Hastings
3bf9125933 Add a DebugLoc parameter to TargetInstrInfo::InsertBranch(). This 
addresses a longstanding deficiency noted in many FIXMEs scattered
across all the targets.

This effectively moves the problem up one level, replacing eleven
FIXMEs in the targets with eight FIXMEs in CodeGen, plus one path
through FastISel where we actually supply a DebugLoc, fixing Radar
7421831.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106243 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 22:43:56 +00:00
Jim Grosbach
59c38f31ac add missing break. inconsequential as the code shouldn't be reached, but 
for correctness' sake, it should be there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106229 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 17:58:54 +00:00
Jim Grosbach
b56ce8171e Add entries for Expanding atomic intrinsics to libcalls. Just a placeholder 
for the moment. The implementation of the libcall will follow.

Currently, the llvm-gcc knows when the intrinsics can be correctly handled by
the back end and only generates them in those cases, issuing libcalls directly
otherwise. That's too much coupling. The intrinsics should always be
generated and the back end decide how to handle them, be it with a libcall,
inline code, or whatever. This patch is a step in that direction.

rdar://8097623



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106227 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 17:50:54 +00:00
Jim Grosbach
bbfc0d22a9 ISD::MEMBARRIER should lower to a libcall (__sync_synchronize) if the target 
sets the legalize action to Expand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106203 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 02:00:53 +00:00
Mon P Wang
9c4a84b4f3 Fixed vector widening of binary instructions that can trap. Patch by Visa Putkinen! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106038 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-15 20:29:05 +00:00
Evan Cheng
302ef834e0 Code refactoring, no functionality changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105775 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-10 02:09:31 +00:00
Jakob Stoklund Olesen
3013a20684 Mark physregs defined by inline asm as implicit. 
This is a bit of a hack to make inline asm look more like call instructions.
It would be better to produce correct dead flags during isel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105749 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-09 20:05:00 +00:00
Jakob Stoklund Olesen
c3c2517fed Add argument name comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-09 00:40:31 +00:00
Mon P Wang
f62546ab04 Fixed a bug during widening where we would avoid legalizing a node. When we 
replace an OpA with a widened OpB, it is possible to get new uses of OpA due to CSE
when recursively updating nodes.  Since OpA has been processed, the new uses are
not examined again.  The patch checks if this occurred and it it did, updates the
new uses of OpA to use OpB.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-04 01:20:10 +00:00
Dan Gohman
400f75cb5e Fix SimplifyDemandedBits' AssertZext logic to demand all the bits. It 
needs to demand the high bits because it's asserting that they're zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105406 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 20:21:33 +00:00
Eli Friedman
268637ed0f Implement expansion in type legalization for add/sub with overflow. The 
expansion is the same as that used by LegalizeDAG.

The resulting code sucks in terms of performance/codesize on x86-32 for a
64-bit operation; I haven't looked into whether different expansions might be
better in general.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 03:49:50 +00:00
Devang Patel
9126c0d42a Keep track of incoming debug value of unused argument. 
Radar 7927666.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105285 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 19:59:01 +00:00
Dan Gohman
956b349034 Fill in missing support for ISD::FEXP, ISD::FPOWI, and friends. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105283 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 18:35:14 +00:00
Chris Lattner
6c41ad8c9a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105228 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-31 17:30:14 +00:00
Chris Lattner
6b37861827 the 'limit' argument to FindOptimalMemOpLowering is unsigned, not uint64_t. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105226 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-31 17:12:23 +00:00
Oscar Fuentes
10e02a017a Use llvm::next' instead of next' to make VC++ 2010 happy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105168 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-30 13:14:21 +00:00
Dan Gohman
462f6b57b6 Reorder some code in SelectionDAGBuilder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105105 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-29 17:53:24 +00:00
Dan Gohman
7451d3e09d SelectionDAG shouldn't have a FunctionLoweringInfo member. RegsForValue 
shouldn't have a TargetLoweringInfo member. And FunctionLoweringInfo::set
doesn't needs its EnableFastISel argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105101 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-29 17:03:36 +00:00
Evan Cheng
046fa3f90a Fix some latency computation bugs: if the use is not a machine opcode do not just return zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105061 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 23:26:21 +00:00
Dan Gohman
f75a7d3fbf Eliminate the restriction that the array size in an alloca must be i32. 
This will help reduce the amount of casting required on 64-bit targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104911 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 01:14:11 +00:00
Jim Grosbach
0798eddd07 Update the saved stack pointer in the sjlj function context following either 
an alloca() or an llvm.stackrestore(). rdar://8031573



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104900 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-27 23:49:24 +00:00
Jim Grosbach
a65850230a back out 104862/104869. Can reuse stacksave after all. Very cool. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104897 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-27 23:11:57 +00:00
Jim Grosbach
084fb0ea32 hook ISD::STACKADDR to an intrinsic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104869 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-27 18:52:11 +00:00
Bill Wendling
804a231dd5 Add FIXME comment to remove this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104749 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 21:53:50 +00:00
Bill Wendling
8d717c7d99 Add "setjmp_syscall", "savectx", "qsetjmp", "vfork", "getcontext" to the list of 
usual suspects that could "return twice".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104737 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 20:39:00 +00:00
Jim Grosbach
23ff7cff52 Adjust eh.sjlj.setjmp to properly have a chain and to have an opcode entry in 
ISD::. No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 20:22:18 +00:00
Devang Patel
394427b014 Update debug info when live-in reg is copied into a vreg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104732 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 20:18:50 +00:00
Bill Wendling
9af7e9a1b5 Move the check for "calls setjmp" to SelectionDAGISel so that it can be used by 
more than just the stack slot coloring algorithm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104722 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 19:46:12 +00:00
Dan Gohman
93d3433579 Eliminate the use of PriorityQueue and just use a std::vector, 
implementing pop with a linear search for a "best" element. The priority
queue was a neat idea, but in practice the comparison functions depend
on dynamic information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 18:52:00 +00:00
Dan Gohman
d89c258051 Delete an unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104716 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 18:34:12 +00:00
Eric Christopher
174e597d46 Temporarily revert r104655 as it's breaking the bots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104664 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 01:59:55 +00:00
Dan Gohman
a4e4ffd389 Change push_all to a non-virtual function and implement it in the 
base class, since all the implementations are the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104659 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 01:10:55 +00:00
Dan Gohman
5eabaa2d7c Trim #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104657 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 00:55:59 +00:00
Bill Wendling
be22683202 Dale and Evan suggested putting the "check for setjmp" much earlier in the 
machine code generation. That's a good idea, so I made it so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104655 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 00:32:40 +00:00
Dan Gohman
eddc114a66 Do one map lookup instead of two. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104645 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-25 21:59:42 +00:00
Dale Johannesen
86234c30a7 Fix another variant of PR 7191. Also add a testcase 
Mon Ping provided; unfortunately bugpoint failed to
reduce it, but I think it's important to have a test for
this in the suite.  8023512.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104624 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-25 18:47:23 +00:00
Dale Johannesen
61734eb117 Fix PR 7191. I have been unable to create a .ll file that fails, sorry. 
(oye, a word which should be better known to people writing tree
traversals, means grandchild.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104619 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-25 17:50:03 +00:00
Jim Grosbach
5eb1951539 Implement eh.sjlj.longjmp for ARM. Clean up the intrinsic a bit. 
Followups: docs patch for the builtin and eh.sjlj.setjmp cleanup to match
longjmp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-22 01:06:18 +00:00
Bob Wilson
70fe6643d6 Clean up extra whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-21 23:53:55 +00:00
Bob Wilson
78f006acdf Change CodeGen/ARM/2009-11-02-NegativeLane.ll to use 16-bit vector elements 
so that it will continue to test what it was meant to test when I commit a
separate change for better support of BUILD_VECTOR and VECTOR_SHUFFLE for Neon.
Fix a DAG combiner crash exposed by this test change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104380 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-21 21:05:32 +00:00
Evan Cheng
b11ac950d6 Rename -pre-RA-sched=hybrid to -pre-RA-sched=list-hybrid. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104306 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-21 00:42:32 +00:00
Evan Cheng
1cc3984148 Allow targets more controls on what nodes are scheduled by reg pressure, what for latency in hybrid mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-20 23:26:43 +00:00
Evan Cheng
15a16def6e Add a hybrid bottom up scheduler that reduce register usage while avoiding 
pipeline stall. It's useful for targets like ARM cortex-a8. NEON has a lot
of long latency instructions so a strict register pressure reduction
scheduler does not work well.
Early experiments show this speeds up some NEON loops by over 30%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104216 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-20 06:13:19 +00:00
Bob Wilson
492fd454ca Optimize away insertelement of an undef value. This shows up in 
test/Codegen/ARM/reg_sequence.ll but it doesn't affect the generated code
because the coalescer cleans it up.  Radar 7998853.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104185 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-19 23:42:58 +00:00
Evan Cheng
e163168aab Code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104173 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-19 22:42:23 +00:00
Evan Cheng
211ffa1351 Code refactoring: pull SchedPreference enum from TargetLowering.h to TargetMachine.h and put it in its own namespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104147 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-19 20:19:50 +00:00
Bob Wilson
14b2141497 When expanding a vector_shuffle, the element type may not be legal and may 
need to be promoted.  The BUILD_VECTOR and EXTRACT_VECTOR_ELT nodes generated
here already allow the promoted type to be used without further changes, so
just do the promotion.  This fixes part of pr7167.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104141 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-19 18:48:32 +00:00
Evan Cheng
0a942dbb1e Intrinsics which do a vector compare (results are all zero or all ones) are modeled as icmp / fcmp + sext. This is turned into a vsetcc by dag combine (yes, not a good long term solution). The targets can then isel the vsetcc to the appropriate instruction. 
The trouble arises when the result of a vector cmp + sext is then and'ed with all ones. Instcombine will turn it into a vector cmp + zext, dag combiner will miss turning it into a vsetcc and hell breaks loose after that.

Teach dag combine to turn a vector cpm + zest into a vsetcc + and 1. This fixes rdar://7923010.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104094 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-19 01:08:17 +00:00
Evan Cheng
28dad2a5ca Sink dag combine's post index load / store code that swap base ptr and index into the target hook. Only the target knows whether the swap is safe. In Thumb2 mode, the offset must be an immediate. rdar://7998649 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104060 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-18 21:31:17 +00:00
Evan Cheng
5012f9b825 Continuously refine the register class of REG_SEQUENCE def with all the source registers and sub-register indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104051 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-18 20:07:47 +00:00
Evan Cheng
27e4840e03 Fix PR7162: Use source register classes and sub-indices to determine the correct register class of the definitions of REG_SEQUENCE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104050 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-18 20:03:28 +00:00
Evan Cheng
a083988c8a FIX PR7158. SimplifyVBinOp was asserting when it fails to constant fold (op (build_vector), (build_vector)). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104004 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-18 00:03:40 +00:00
Bill Wendling
53f7602b61 - Set the "HasCalls" flag after instruction selection is finished. 
- Change the logic DisableFramePointerElim() to check for the
  -disable-non-leaf-fp-elim before -disable-fp-elim.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103990 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-17 23:09:50 +00:00
Dale Johannesen
8d908ebd19 Fix uint64->{float, double} conversion to do rounding correctly in 32-bit. 
The implementation in LegalizeIntegerTypes to handle this as 
sint64->float + appropriate power of 2 is subject to double rounding,
considered incorrect by numerics people.  Use this implementation only
when it is safe.  This leads to using library calls in some cases
that produced inline code before, but it's correct now.
(EVTToAPFloatSemantics belongs somewhere else, any suggestions?)

Add a correctly rounding (though not particularly fast) conversion
that uses X87 80-bit computations for x86-32.

7885399, 5901940.  This shows up in gcc.c-torture/execute/ieee/rbug.c
in the gcc testsuite on some platforms.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103883 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-15 18:51:12 +00:00
Dale Johannesen
789955127e Improve assertion messages. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103882 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-15 18:38:02 +00:00
Dan Gohman
7f0d69555c Fast ISel trivially coalesces away no-op casts, so check for this when 
setting kill flags.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103832 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 22:53:18 +00:00
Dan Gohman
8b3a8f5773 Don't set kill flags for instructions which the scheduler has cloned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103827 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 22:01:14 +00:00
Bill Wendling
b92187a410 Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe what 
the variable actually tracks.

N.B., several back-ends are using "HasCalls" as being synonymous for something
that adjusts the stack. This isn't 100% correct and should be looked into.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103802 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 21:14:32 +00:00
Dale Johannesen
a5afa1cb21 Implement a correct ui64->f32 conversion. The old 
one was subject to double rounding in extreme cases.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103744 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 23:50:42 +00:00
Dan Gohman
e1308d86ed An Instruction has a trivial kill only if its use is in the same 
basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103725 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 19:19:32 +00:00
Dan Gohman
a6cb641f48 Add initial kill flag support to FastISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103529 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 23:54:07 +00:00
Dan Gohman
9d7019f586 Don't set kill flags on uses of CopyFromReg nodes. InstrEmitter doesn't 
create separate virtual registers for CopyFromReg values, so uses of
them don't necessarily kill the value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103519 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 21:59:14 +00:00
Duncan Sands
16d8f8bd91 I got tired of VISIBILITY_HIDDEN colliding with the gcc enum. Rename it 
to LLVM_LIBRARY_VISIBILITY and introduce LLVM_GLOBAL_VISIBILITY, which is
the opposite, for future use by dragonegg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 20:16:09 +00:00
Dan Gohman
038df88e28 Trim #includes and forward declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 19:11:43 +00:00
Dan Gohman
ff7a562751 Implement a bunch more TargetSelectionDAGInfo infrastructure. 
Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and
EmitTargetCodeForMemmove out of TargetLowering and into
SelectionDAGInfo to exercise this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103481 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 17:31:57 +00:00
Douglas Gregor
7d9663c70b Fixes for Microsoft Visual Studio 2010, from Steven Watanabe! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103457 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 06:17:44 +00:00
Evan Cheng
60ffa9467b Indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103441 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 23:08:19 +00:00
Evan Cheng
aad753bbbd Be careful with operand promotion. For a binary operation, the source operands may be the same. PR7018. rdar://7939869. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 19:03:57 +00:00
Duncan Sands
ad017dcb3a Add an assertion to catch attempts to access off the end of the array. 
Based on a patch by Javier Martinez.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103391 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 04:54:28 +00:00
Dan Gohman
4ce86f459c SDDbgValues are apparently not being legalized. Fix a symptom of the problem, 
and not the real problem itself, by dropping debug info for i128 values.
rdar://7958162.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103310 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 22:19:08 +00:00
Devang Patel
02f0dbd97a Verify variable directly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103305 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 22:04:20 +00:00
Dale Johannesen
0a406ae0d9 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103299 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 21:35:53 +00:00
Dan Gohman
fb95f89e8e Transfer debug location information from PHI nodes to resulting 
lowered copies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103228 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 01:10:20 +00:00
Dan Gohman
cc751bb99c Print debug information for SDNodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103227 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 01:09:21 +00:00
Dan Gohman
34dcc6fadc Add a DebugLoc argument to TargetInstrInfo::copyRegToReg, so that it 
doesn't have to guess.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103194 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-06 20:33:48 +00:00
Dan Gohman
97c94b8fc6 In bottom-up mode, defer the materialization of local constant values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103139 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-06 00:02:14 +00:00
Dan Gohman
a7a0ed7901 Add an "IsBottomUp" member function to FastISel, which will be used to 
support a new bottom-up mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103138 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-05 23:58:35 +00:00
Devang Patel
d47f3c803f Use getValue() for PHINodes when direct NodeMap access does not work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103126 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-05 22:29:00 +00:00
Evan Cheng
f1ced259b5 Instruction selection optimizations may have moved the def of a function argument out of the entry block. rdar://7937489 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 00:58:39 +00:00
Evan Cheng
ba609c88a5 Teach scheduler about REG_SEQUENCE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 00:22:40 +00:00
Dan Gohman
2131e2a75f Re-enable isel kill flags, now that the local allocator is ignoring them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102981 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 00:12:15 +00:00
Dan Gohman
1fdc614bee Factor out FastISel's code for materializing constants and other values 
in registers into a separate function to de-couple it from the
top-down-specific logic in getRegForValue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 23:36:34 +00:00
Anton Korobeynikov
17458a786e Insert ANY_EXTEND node instead of invalid truncate during DAG Combining (X & 1), 
when needed. This fixes PR7001

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102838 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 12:52:34 +00:00
Dan Gohman
d725f04ff8 Remove the code for special-casing byval for fast-isel. SelectionDAG 
handles argument lowering anyway, so there's no need for special
casing here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102828 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 02:44:23 +00:00
Dan Gohman
0b7afeb440 Re-disable kill flags, as there is more trouble. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102826 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 01:57:56 +00:00
Dan Gohman
3a401bcd04 Re-enable kill flags from SelectionDAGISel, with a fix: don't 
try to put a kill flag on a DBG_INFO instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102820 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:50:53 +00:00
Dan Gohman
1b79a2ff54 Fix whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102817 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:33:28 +00:00
Dan Gohman
5d11ea39f7 Don't pass SDValues by non-const reference unless they may be 
modified.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102816 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:33:16 +00:00
Dan Gohman
95140a4cc1 Reorgnaize more switch code lowering to clean up some tricky 
code, and to eliminate the need for the SelectionDAGBuilder
state to be live during CodeGenAndEmitDAG calls.

Call SDB->clear() before CodeGenAndEmitDAG calls instead of
before it, and move the CurDAG->clear() out of SelectionDAGBuilder,
which doesn't own the DAG, and into CodeGenAndEmitDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102814 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:25:44 +00:00
Dan Gohman
1b40319eba Delete the EdgeMapping variable itself. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102810 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:02:20 +00:00
Dan Gohman
af1d8ca44a Get rid of the EdgeMapping map. Instead, just check for BasicBlock 
changes before doing phi lowering for switches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102809 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:01:06 +00:00
Bill Wendling
d71bb56275 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102791 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 22:19:17 +00:00
Dan Gohman
e7fd7c6886 Remove this debug output. The MachineFunction will be printed once all of 
instruction selection is done; it's confusing to see parts of it printed,
while other parts are omitted, along the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102771 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 21:21:21 +00:00
Dan Gohman
891ff8fbd6 EmitDbgValue doesn't need its EdgeMapping argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:35:33 +00:00
Dan Gohman
3ce89f47de Apply a patch from Jan Sjodin to fix a compiler abort on vector 
comparisons sign-extended to a different bitwidth than the
comparison operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102721 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 17:19:19 +00:00
Dan Gohman
71cee76d26 Temporarily disable SelectionDAG kill flags, which are causing trouble. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102680 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 00:32:51 +00:00
Dan Gohman
47bd03b277 Set register kill flags on the SelectionDAG path, at least in the 
easy cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102678 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 00:08:21 +00:00
Devang Patel
719f6a9d9c Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102661 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 20:40:36 +00:00
Devang Patel
a83ce98d5f DO not push DBG_VALUE machine instructions for inlined fuction arguments in entry block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102653 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 18:50:36 +00:00
Evan Cheng
8fed76115e Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102606 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 06:58:53 +00:00
Evan Cheng
a36acad67d Re-enable 102565 with fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102602 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 06:33:38 +00:00
Evan Cheng
16e4ace951 Temporarily disable my changes to unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102590 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 03:34:19 +00:00
Evan Cheng
9e8a2b9346 Do not generate duplicate dbg_value instructions for function arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102585 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:40:30 +00:00
Dan Gohman
c924556dd5 Fix missing #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:39:13 +00:00
Evan Cheng
ee1d91a830 Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102581 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:23:55 +00:00
Evan Cheng
1deef27b0a Check Reg against zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102573 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 00:59:34 +00:00
Devang Patel
f38c6c89f1 tidy up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102558 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 23:24:13 +00:00
Evan Cheng
2ad0fcf794 Replace r102368 with code that's less fragile. This creates DBG_VALUE instructions for function arguments early and insert them after instruction selection is done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102554 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 23:08:54 +00:00
Devang Patel
54fc4d6a48 While lowering dbg_declare, emit DBG_VALUE machine instruction if alloca matching llvm.dbg.declare intrinsic is missing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 19:27:33 +00:00
Evan Cheng
b3a3d5e858 Try operation promotion only if regular dag combine and target-specific ones failed to do anything. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102492 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 07:10:39 +00:00
Devang Patel
0f9d952542 Ignore DBG_VALUE instructions that points to undef values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102463 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 20:54:45 +00:00
Evan Cheng
ac7eae5b89 - When legal, promote a load to zextload rather than ext load. 
- Catch more further dag combine opportunities as result of operand promotion, e.g. (i32 anyext (i16 trunc (i32 x))) -> (i32 x)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:48:13 +00:00
Dale Johannesen
fc0b860bcc Revert a small part of 102372; this fixes at least one 
of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 02:10:05 +00:00
Bob Wilson
cc7354e993 Avoid adding a null MD node operand, which crashes with "-debug" when trying 
to print the operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102395 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 22:56:56 +00:00
Dale Johannesen
925965e6ba Remove crufty comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102380 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:48:54 +00:00
Dale Johannesen
fdb42fa5fe 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102372 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:06:49 +00:00
Evan Cheng
962021bc7f - Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue. 
- Teach spiller to modify DBG_VALUE instructions to reference spill slots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:38:55 +00:00
Dale Johannesen
f822e733af Stop abusing EmitInstrWithCustomInserter for target-dependent 
form of DEBUG_VALUE, as it doesn't have reasonable default
behavior for unsupported targets.  Add a new hook instead.
No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102320 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:33:54 +00:00
Dale Johannesen
7dc7840850 Add comment re byval args. Doesn't actually work this way yet. 
xs


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102316 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:03:54 +00:00
Evan Cheng
95c57ea182 When a load operand is promoted to an extload, replace other uses with uses of extload result truncated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102236 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-24 04:43:44 +00:00
Dan Gohman
a7bcef1bce Apply a fix for a vector setcc dagcombine from Jan Sjodin. No 
testcase yet, as the testcase now fails downstream.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102228 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-24 01:17:30 +00:00
Evan Cheng
caf7740f96 Code refactoring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102202 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-23 19:10:30 +00:00
Dan Gohman
e8c92dd439 Move FastISel's HandlePHINodesInSuccessorBlocks call down into FastISel 
itself too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102176 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-23 15:29:50 +00:00
Dan Gohman
c105a2b5b7 Sink SelectionDAGBuilder's HandlePHINodesInSuccessorBlocks down 
into SelectionDAGBuilder itself.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102128 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-22 20:55:53 +00:00
Dan Gohman
f81eca0ab9 Move HandlePHINodesInSuccessorBlocks functions out of SelectionDAGISel 
and into SelectionDAGBuilder and FastISel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102123 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-22 20:46:50 +00:00
Evan Cheng
07c4e1085d - It's not safe to promote rotates (at least not trivially). 
- Some code refactoring.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102111 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-22 20:19:46 +00:00
Dan Gohman
3b172f1c01 Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102110 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-22 20:06:42 +00:00
Dan Gohman
620427d5a1 Move PHINodesToUpdate out of SelectionDAGBuilder and into 
FunctionLoweringInfo, as it isn't SelectionDAG-specific. This isn't
completely natural, as PHI node state is not per-function but rather
per-basic-block, however there's currently no other convenient
per-basic-block state to group it with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102109 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-22 19:55:20 +00:00
Dan Gohman
f0757b0edc Add more const qualifiers on TargetMachine and friends. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101977 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-21 01:34:56 +00:00
Dan Gohman
5eb6d65a27 Move several SelectionDAG-independent utility functions out of the 
SelectionDAG directory and into a new Analysis.cpp file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-21 01:22:34 +00:00
Dan Gohman
bc7588eb68 Add another variant of this test which found a place where 
CodeGen's ComputeMaskedBits was being over-conservative when computing
bits for an ADD.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-21 00:19:28 +00:00
Dale Johannesen
7609017dc3 Because of the EMMS problem, right now we have to support 
user-defined operations that use MMX register types, but
the compiler shouldn't generate them on its own.  This adds
a Synthesizable abstraction to represent this, and changes
the vector widening computation so it won't produce MMX types.
(The motivation is to remove noise from the ABI compatibility
part of the gcc test suite, which has some breakage right now.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101951 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 22:34:09 +00:00
Dan Gohman
92884f7ee5 Sink the CopyToExportRegsIfNeeded calls out of SelectionDAGISel 
into SelectionDAGBuilder. This avoids a separate pass over the
instructions, and has the side effect of providing debug location
information to the copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101906 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 15:03:56 +00:00
Dan Gohman
ba5be5c07b Don't send PHI nodes down to SelectionDAGBuilder of FastISel, since 
they end up doing nothing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101904 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 15:00:41 +00:00
Dan Gohman
d84e806dd4 Sink this use_empty() check into isUsedOutsideOfDefiningBlock. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101902 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 14:50:13 +00:00
Dan Gohman
c025c85352 If a PHI node somehow has debug info, propogate it to the MachineInstr PHI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101901 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 14:48:02 +00:00
Dan Gohman
3f1403f14e Don't iterate through the whole block just to find the PHI nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101900 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 14:46:25 +00:00
Dan Gohman
8b1dbebc1e Delete a redundant return statement. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101860 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 01:58:20 +00:00
Bill Wendling
86c5abb4c0 The visitXOR method can return the same SDNode. If so, we don't want to delete 
it as it's not dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 01:25:01 +00:00
Dan Gohman
a9056dbec1 Remove this debug output; it isn't that useful, and it's incomplete 
in the case where a basic block is split.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101850 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 00:56:44 +00:00
Dan Gohman
8ba3aa7f9c Sink DebugLoc handling out of SelectionDAGISel into FastISel and 
SelectionDAGBuilder, where it doesn't have to be as complicated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101848 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 00:48:35 +00:00
Dan Gohman
084751cd16 Remove MachineFunction's DefaultDebugLoc member, and make DwarfDebug.cpp 
responsible for figuring out what that's supposed to be on its own.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101844 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 00:37:27 +00:00
Dan Gohman
a9a3321938 Reapply the removal of SelectionDAGISel's BB, with a fix for the case 
where multiple blocks are emitted; functions which do this need to return
the new BB so that their callers can stay current.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101843 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-20 00:29:35 +00:00
Dan Gohman
68b7960c1a Revert 101825, which is causing trouble. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101832 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 23:34:15 +00:00
Dan Gohman
35bb85b7ee Eliminate SelectionDAGISel's "current block" member. Just pass it as 
an argument to things that need it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101825 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 22:51:14 +00:00
Dan Gohman
99be8ae389 Eliminate the CurMBB member from SelectionDAGBuilder. For places that 
need it, just pass around the parent block of the current instruction
explicitly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101822 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 22:41:47 +00:00
Evan Cheng
4c26e93e89 More progress on promoting i16 operations to i32 for x86. Work in progress. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101808 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 19:29:22 +00:00
Dan Gohman
50d2b1ac02 Give SelectionDAG a TargetMachine too, rather than having it 
fetch one from the MachineFunction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101807 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 19:22:07 +00:00
Evan Cheng
285fb1cc4a More 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101806 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 19:17:44 +00:00
Dan Gohman
55e59c1863 Code that needs a TargetMachine should have access to one directly, rather 
than just getting one through a TargetLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101802 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 19:05:59 +00:00
Dan Gohman
46007b3712 Move isInTailCallPosition out of SelectionDAGBuilder, as it isn't 
SelectionDAG-specific.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101801 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 18:41:46 +00:00
Dan Gohman
3fb150a902 Fix -Wcast-qual warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101655 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 17:42:52 +00:00
Dan Gohman
383b5f6b91 Delete now-unnecessary const_casts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101637 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 15:32:28 +00:00
Dan Gohman
d858e90f03 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101635 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 15:26:15 +00:00
Evan Cheng
e5b51ac770 More work to allow dag combiner to promote 16-bit ops to 32-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101621 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 06:13:15 +00:00
Evan Cheng
4ff28527bb Another 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 06:12:32 +00:00
Eric Christopher
551754c495 Revert 101465, it broke internal OpenGL testing. 
Probably the best way to know that all getOperand() calls have been handled
is to replace that API instead of updating.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 23:37:20 +00:00
Evan Cheng
003d7c4b5d (i32 sext_in_reg (i32 aext (i16 x)), i16) -> (i32 sext x). No known test case until -promote-16bit is enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101551 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 22:26:19 +00:00
Dan Gohman
8c0e89925d Create a new TargetSelectionDAGInfo class. This will eventually acquire 
SelectionDAG-specific parts of TargetLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 21:12:11 +00:00
Dan Gohman
4bcf0a9233 Commit this, which should have accompanied 101531. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101532 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 20:22:43 +00:00
Evan Cheng
53f6ed9560 80 col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101501 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 17:58:41 +00:00
Evan Cheng
182465c589 80 col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 17:57:59 +00:00
Dan Gohman
33b7a291aa Avoid creating virtual registers for unused values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101480 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 17:15:02 +00:00
Dan Gohman
ac7d05c4bf Fix an assertion string. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101478 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 16:55:18 +00:00
Dan Gohman
a44e522b7d Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 16:52:37 +00:00