Commit Graph

3006 Commits

Author SHA1 Message Date
Duncan Sands
c529168f29 When splitting a SHUFFLE_VECTOR, try to have the result
use SHUFFLE_VECTOR instead.  If not practical, fall back
to the old scheme of building the split result by hand
using a BUILD_VECTOR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59361 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-15 09:25:38 +00:00
Mon P Wang
49292f1651 Add missing widen operations, fixed widening for extracting a subvector,
and when loading/storing a widen vector, make sure that they are loaded
and stored in consecutive order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59357 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-15 06:05:52 +00:00
Dan Gohman
14ad6fce43 Correct a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59341 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-15 00:24:23 +00:00
Dan Gohman
ade9f18934 Move ScheduleDAGList's LatencyPriorityQueue class out to a separate file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59340 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-15 00:23:40 +00:00
Dan Gohman
7e6a1bc0fa Add support for building a ScheduleDAG from MachineInstrs. This is currently
fairly conservative; it doesn't do alias-analysis queries and it doesn't
attempt to break anti-dependencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59324 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 21:47:58 +00:00
Dan Gohman
8f6c6d4c5f For post-regalloc scheduling, remove the instructions from the block
before re-inserting them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59281 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 00:33:17 +00:00
Dan Gohman
90c5201dd1 Check in the correct version of the patch in r59279.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59280 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 00:32:34 +00:00
Dan Gohman
505a551dab Debug printing for SUnits that carry MachineInstrs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59279 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 00:28:56 +00:00
Dan Gohman
f449bf36ef Initial support for carrying MachineInstrs in SUnits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59278 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 00:06:09 +00:00
Dan Gohman
c3c129fd8b Change DOTGraphTraits<ScheduleDAG*>::getGraphName how to find the name of
the current function on its own, rather than relying on the SelectionDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 23:45:55 +00:00
Dan Gohman
d23e0f81bc Remove the FlaggedNodes member from SUnit. Instead of requiring each SUnit
to carry a SmallVector of flagged nodes, just calculate the flagged nodes
dynamically when they are needed.

The local-liveness change is due to a trivial scheduling change where
the scheduler arbitrary decision differently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59273 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 23:24:17 +00:00
Dan Gohman
550f5afb68 Make the Node member of SUnit private, and add accessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 21:36:12 +00:00
Dan Gohman
a23b3b803e Change ScheduleDAG's DAG member from a reference to a pointer, to prepare
for the possibility of scheduling without a SelectionDAG being present.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 21:21:28 +00:00
Dan Gohman
bc5cbb8be9 Move the code that inserts X87 FP_REG_KILL instructions from a
special-purpose hook to a new pass. Also, add check to see if any
x87 virtual registers are used, to avoid doing any work in the
common case that no x87 code is needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59190 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 22:55:05 +00:00
Dale Johannesen
7e298ed379 Fix unsigned char->ppcf128 conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59150 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 18:38:44 +00:00
Duncan Sands
1e465a35c8 Simplify SplitVecRes_EXTRACT_SUBVECTOR. This means
that it no longer handles non-power-of-two vectors.
However it previously only handled them sometimes,
depending on obscure numerical relationships between
the index and vector type.  For example, for a vector
of length 6, it would succeed if and only if the
index was an even multiple of 6.  I consider this
more confusing than useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59122 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 08:37:57 +00:00
Duncan Sands
245146b58a Correct some thinkos in the expansion of ADD/SUB
when the target does not support ADDC/SUBC.  This
fixes PR3044.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59120 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 08:23:26 +00:00
Dale Johannesen
cbf7cf50ec Fix the testb optimization so x86 also bootstraps.
Reenable test.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59101 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 02:00:35 +00:00
Dan Gohman
b13af2f2ec In ScheduleDAGRRList::CopyAndMoveSuccessors, create the SUnit for the load
before creating the SUnit for the operation that it was unfolded from. This
allows each SUnit to have all of its predecessor SUnits available at the time
it is created. I don't know yet if this will be absolutely required, but it
is a little tidier to do it this way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59083 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 21:34:44 +00:00
Dan Gohman
eb9dbf117f Avoid relying on the SelectionDAG for initializing the MachineFunction and
TargetLoweringInfo variables for the scheduler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59082 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 21:31:56 +00:00
Dan Gohman
9b75b37375 Change the scheduler accessor methods to accept an explicit TargetMachine
argument instead of taking the SelectionDAG's TargetMachine. This is
needed for some upcoming scheduler changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59055 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 17:50:47 +00:00
Bill Wendling
ae89bb1443 Fix for PR3040:
The CC was changed, but wasn't checked to see if it was legal if the DAG
combiner was being run after legalization. Threw in a couple of checks just to
make sure that it's okay. As far as the PR is concerned, no back-end target
actually exhibited this problem, so there isn't an associated testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59035 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 08:25:46 +00:00
Mon P Wang
00ec49b6ba Cleaned up and fix bugs in convert_rndsat node
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59025 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 05:40:06 +00:00
Bill Wendling
d0ab34bf8f Temporarily revert r58979 and related patch. It's causing a failure in X86 bootstrap:
Comparing stages 2 and 3
warning: ./cc1-checksum.o differs
warning: ./cc1obj-checksum.o differs
warning: ./cc1objplus-checksum.o differs
warning: ./cc1plus-checksum.o differs
Bootstrap comparison failure!
./alias.o differs
./alloc-pool.o differs
./attribs.o differs
./bb-reorder.o differs
./bitmap.o differs
./build/errors.o differs
./build/genattrtab.o differs
./build/genautomata.o differs
./build/genemit.o differs
./build/genextract.o differs
...

-bw


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59003 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 21:22:06 +00:00
Mon P Wang
77cdf30742 Added CONVERT_RNDSAT (conversion with rounding and saturation) SDNode to
support targets that support these conversions. Users should avoid using
this node as the current targets don't generating code for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59001 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 20:54:11 +00:00
Duncan Sands
f509224510 Fix PR2667: add soft float support for sint_to_fp/uint_to_fp
where the argument is an apint, or smaller than the minimum
size for which there is a libcall (i32). 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58994 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 17:36:26 +00:00
Duncan Sands
cff50d9e20 Tweak some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58993 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 17:31:56 +00:00
Duncan Sands
6959b2bb65 Small cleanups. No functionality change intended!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58992 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 17:29:56 +00:00
Duncan Sands
a29c13086a When promoting the result of fp_to_uint/fp_to_sint,
inform the optimizers that the result must be zero/
sign extended from the smaller type.  For example,
if a fp to unsigned i16 is promoted to fp to i32,
then we are allowed to assume that the extra 16 bits
are zero (because the result of fp to i16 is undefined
if the result does not fit in an i16).  This is
quite aggressive, but should help the optimizers
produce better code.  This requires correcting a
test which thought that fp_to_uint is some kind
of truncation, which it is not: in the testcase
(which does fp to i1), either the fp value converts
to 0 or 1 or the result is undefined, which is
quite different to truncation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58991 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 17:28:30 +00:00
Dale Johannesen
baf26b2d3e Really fix testb optimization on big-endian.
Fixes ppc32 bootstrap.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58979 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 07:16:42 +00:00
Mon P Wang
aeb06d2462 Added support for the following definition of shufflevector
<result> = shufflevector <n x <ty>> <v1>, <n x <ty>> <v2>, <m x i32> <mask> 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58964 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 04:46:22 +00:00
Dale Johannesen
ced4900578 Temporarily revert 58825, which breaks PPC bootstrap.
xs


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58930 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-09 06:48:10 +00:00
Duncan Sands
059b2dbd90 Try to produce better code when scalarizing VSETCC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58920 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 18:26:48 +00:00
Dale Johannesen
b514ac9e3c Make testb optimization work on big-endian targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58874 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 00:01:16 +00:00
Dale Johannesen
53e4e4478c Make FP tests requiring two compares work on PPC (PR 642).
This is Chris' patch from the PR, modified to realize that
SETUGT/SETULT occur legitimately with integers, plus
two fixes in LegalizeDAG to pass a valid result type into
LegalizeSetCC.  The argument of TLI.getSetCCResultType is
ignored on PPC, but I think I'm following usage elsewhere.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58871 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 22:54:33 +00:00
Duncan Sands
47b3417cf0 Sign-extend rather than zero-extend when promoting
the condition for a BRCOND, according to what is
returned by getSetCCResultContents.  Since all
targets return the same thing (ZeroOrOneSetCCResult),
this should be harmless!  The point is that all over
the place the result of SETCC is fed directly into
BRCOND.  On machines for which getSetCCResultContents
returns ZeroOrNegativeOneSetCCResult, this is a
sign-extended boolean.  So it seems dangerous to
also feed BRCOND zero-extended booleans in some
circumstances - for example, when promoting the
condition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58861 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 20:13:04 +00:00
Dale Johannesen
bc3c4296c0 Fix unsigned->ppcf128 conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58856 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 19:11:43 +00:00
Dale Johannesen
89217a6f18 When we're doing a compare of load-AND-constant to 0
(e.g. a bitfield test) narrow the load as much as possible.
The has the potential to avoid unnecessary partial-word
load-after-store conflicts, which cause stalls on several targets.
Also a size win on x86 (testb vs testl).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58825 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 01:28:02 +00:00
Bill Wendling
b7c6ebcb47 - Modify the stack protector algorithm so that the stack slot is allocated in
LLVM IR code and not in the selection DAG ISel. This is a cleaner solution.

- Fix the heuristic for determining if protectors are necessary. The previous
  one wasn't checking the proper type size.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58824 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 01:23:58 +00:00
Mon P Wang
e0b436ac41 Fixed scalarizing an extract subvector and prevent an infinite loop
when simplify a vector. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58820 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 22:52:21 +00:00
Devang Patel
e75808cf3d Emit label for llvm.dbg.func.start of the inlined function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58814 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 21:28:20 +00:00
Duncan Sands
b951aec3ad Formating/comment changes - no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58801 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 08:51:32 +00:00
Bill Wendling
4c3a1d8d2b - Rename stackprotector_{prologue,epilogue} to stackprotector_{create,check}.
- Get rid of "HasStackProtector" in MachineFrameInfo.
- Modify intrinsics to tell which are doing what with memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58799 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 07:23:03 +00:00
Mon P Wang
f007a8b931 Widening cleanup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58796 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 05:31:54 +00:00
Bill Wendling
b2a4298ce4 Implement the stack protector stack accesses via intrinsics:
- stackprotector_prologue creates a stack object and stores the guard there.

- stackprotector_epilogue reads the stack guard from the stack position created
  by stackprotector_prologue.

- The PrologEpilogInserter was changed to make sure that the stack guard is
  first on the stack frame.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58791 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 02:29:10 +00:00
Devang Patel
20dd0460a1 Emit label for llvm.dbg.func.start of the inlined function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58786 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 00:30:09 +00:00
Duncan Sands
c45cb9f739 Fix thinko in ppcf128 expansion of truncating store.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58753 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 07:17:27 +00:00
Evan Cheng
3eb57d5439 Type of shuffle mask has changed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58751 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 06:04:18 +00:00
Dale Johannesen
53997b0745 80 columns
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58717 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04 20:52:49 +00:00
Duncan Sands
e59416efb8 Fix PR3011: LegalizeTypes support for scalarizing
SELECT_CC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58706 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04 17:31:08 +00:00