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Author SHA1 Message Date
Bob Wilson
704d1347c5 Extend SROA to handle arrays accessed as homogeneous structs and vice versa. 
This is a minor extension of SROA to handle a special case that is
important for some ARM NEON operations.  Some of the NEON intrinsics
return multiple values, which are handled as struct types containing
multiple elements of the same vector type.  The corresponding return
types declared in the arm_neon.h header have equivalent arrays.  We
need SROA to recognize that it can split up those arrays and structs
into separate vectors, even though they are not always accessed with
the same type.  SROA already handles loads and stores of an entire
alloca by using insertvalue/extractvalue to access the individual
pieces, and that code works the same regardless of whether the type
is a struct or an array.  So, all that needs to be done is to check
for compatible arrays and homogeneous structs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123381 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 17:45:11 +00:00
Bob Wilson
694a10e7d8 Make SROA more aggressive with allocas containing padding. 
SROA only split up structs and arrays one level at a time, so padding can
only cause trouble if it is located in between the struct or array elements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123380 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 17:45:08 +00:00
Oscar Fuentes
3bf2279411 Disable RTTI when building unit tests. This avoids errors at link time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123377 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 15:31:45 +00:00
Oscar Fuentes
60b531270b Platform tests for argz_* functions. 
Patch by arrowdodger!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123376 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 15:06:32 +00:00
Duncan Sands
53ad861193 Remove some wrong code which fortunately was never executed (as explained in 
the comment I added): an extern weak global may have a null address.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123373 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 10:43:08 +00:00
Duncan Sands
6dc91253ab The most common simplification missed by instsimplify in unoptimized bitcode 
is "X != 0 -> X" when X is a boolean.  This occurs a lot because of the way
llvm-gcc converts gcc's conditional expressions.  Add this, and a few other
similar transforms for completeness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123372 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 08:56:29 +00:00
Evan Cheng
7597212abc Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a step 
in the right direction. It eliminated some hacks and will unblock codegen
work. But it's far from being done. It doesn't reject illegal expressions,
e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123369 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 07:58:56 +00:00
Eric Christopher
04f5079ca1 Experiment with changing the default 32-bit linux stack alignment to 
16 bytes for PR8969. Update all testcases accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123367 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 06:47:10 +00:00
Rafael Espindola
c2a94da313 Keep unnamed_addr when linking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123364 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 05:12:34 +00:00
Rafael Espindola
d72479c2f0 Reject uses of unnamed_addr in declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123358 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 01:30:30 +00:00
Kevin Enderby
fef9ff4922 Add a FIXME and two asserts for now in the ARMAsmParser when it sees .code 16 or 
.code 32 if the TargetMachine's isThumb() boolean does not match.  The correct
fix is to switch ARM subtargets at that point and is tracked by rdar://8856789
which is bigger task.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123353 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 01:07:01 +00:00
Dan Gohman
dd11ea4a37 Fix r123346 to handle scalar types too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 01:06:51 +00:00
Jakob Stoklund Olesen
668c9e31df Add missing space in debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123351 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 00:57:35 +00:00
Jason W Kim
8a8696db6b Change call to Error() to assert() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123350 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 00:27:00 +00:00
Jason W Kim
1d8661744b Style clean up - break up the breaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123347 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 00:07:51 +00:00
Dan Gohman
b86654385a Apply the patch from PR8958, which allows llc to get slightly 
further on the associated testcase before aborting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123346 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:56:26 +00:00
Michael J. Spencer
9df536ca78 Support/Path: Deprecate PathV1::IsSymlink and replace all uses with PathV2::is_symlink. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123345 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:55:06 +00:00
Jakob Stoklund Olesen
25dc2268a5 Try again enabling LiveDebugVariables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123342 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:36:21 +00:00
Jason W Kim
8dc602d245 Added clarifying comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123341 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:25:02 +00:00
Jason W Kim
650b7d76af JimG sez: "The value-kinds look like masks, but they're not consistently used 
that way, unfortunately. If you want to change them to work additively instead
of a one-variant-kind-per-symbolref, that's great and I completely agree it's
worth doing, but it really should be a separate patch. Until then, this isn't
correct."

So I am reverting this bit until a more opportune time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123340 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:21:49 +00:00
Jakob Stoklund Olesen
f0704d28f3 Don't emit a DBG_VALUE for a spill slot that the rewriter decided not to use after all. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123339 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:14:07 +00:00
Jakob Stoklund Olesen
12a40314a9 Fix braino in dominator tree walk. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123338 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:14:04 +00:00
Jakob Stoklund Olesen
f203627f21 Sometimes, old virtual registers can linger on DBG_VALUE instructions. 
Make sure we don't crash in that case, but simply turn them into %noreg instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123335 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 22:37:49 +00:00
Jakob Stoklund Olesen
ee547095bb Teach VirtRegRewriter to update slot indexes when erasing instructions. 
It was leaving dangling pointers in the slot index maps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123334 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 22:28:51 +00:00
Jakob Stoklund Olesen
7fd747ba24 Annotate VirtRegRewriter debug output with slot indexes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123333 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 22:28:48 +00:00
Jakob Stoklund Olesen
fc69c370e1 Verify slot index ordering. 
The slot indexes must be monotonically increasing through the function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123324 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 21:27:48 +00:00
Jakob Stoklund Olesen
a5f1a900df Assert if anybody tries to put a slot index on a DBG_VALUE instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123323 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 21:27:45 +00:00
Jakob Stoklund Olesen
7bd46dae9c Verify that machine instruction parent pointers are consistent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123322 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 21:27:41 +00:00
Bill Wendling
7caebff83d Sort the register list based on the *actual* register numbers rather than the 
enum values we give to them. <rdar://problem/8823730>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123321 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 21:20:59 +00:00
Devang Patel
85bbd576ea Use SmallVector instead of SmallPtrSet and avoid non-deterministic behavior. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123318 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 19:12:45 +00:00
Matt Beaumont-Gay
5f8a917b65 Mostly undo r123297, but move the default case in EvaluateAsPCRel to the top 
of the switch block to appease GCC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123317 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 18:02:55 +00:00
Nick Lewycky
e45f2dfde6 Add another note taken from the gcc bugzilla. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123315 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 09:06:19 +00:00
Venkatraman Govindaraju
860b64cb1e Implement RETURNADDR and FRAMEADDR lowering in SPARC backend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123310 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 05:08:36 +00:00
Venkatraman Govindaraju
c178308b23 Remove SPARC backend getpcx instruction's Uses. Also, insert an assert to 
ensure %o7 is not assigned as the destination of getpcx instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123304 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 03:52:59 +00:00
Chris Lattner
d318fc2ceb revert 123144, reenabling the rest of memset formation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123302 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 03:25:15 +00:00
Venkatraman Govindaraju
7d29ffbe5b Fix SPARC backend call instruction so that arguments passed through registers 
are correctly marked as used instead of passing all possible argument registers
as used.  


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123301 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 03:18:21 +00:00
Chris Lattner
d2e905027b revert r123146 which disabled code that wasn't the root cause 
of the bootstrap miscompare issue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123299 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 01:52:23 +00:00
Chris Lattner
2d5c0cd197 revert r123149, reenabling an improvement to memcpyopt that wasn't 
the source of the bootstrap problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123298 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 01:43:46 +00:00
Matt Beaumont-Gay
676943b31a Prefer llvm_unreachable to assert(0) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123297 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 01:42:42 +00:00
Jason W Kim
86a97f2e4d 1. Support ELF pcrel relocations for movw/movt: 
R_ARM_MOVT_PREL and R_ARM_MOVW_PREL_NC.
2. Fix minor bug in ARMAsmPrinter - treat bitfield flag as a bitfield, not an enum.
3. Add support for 3 new elf section types (no-ops)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123294 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 00:19:25 +00:00
Jason W Kim
9081b4b4cf Workaround for bug 8721. 
.s Test added.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123292 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 23:53:41 +00:00
Jakob Stoklund Olesen
2df5458535 The world is not ready for LiveDebugVariables yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123290 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 23:20:33 +00:00
Jakob Stoklund Olesen
89f1582616 Remove the PR8954 workaround. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123288 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:56:41 +00:00
Jakob Stoklund Olesen
fbbd4abfe5 Fix a non-deterministic loop in llvm::MergeBlockIntoPredecessor. 
DT->changeImmediateDominator() trivially ignores identity updates, so there is
really no need for the uniqueing provided by SmallPtrSet.

I expect this to fix PR8954.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123286 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:54:38 +00:00
Jakob Stoklund Olesen
a518ccc26a Enable LiveDebugVariables by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123282 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:45:28 +00:00
Venkatraman Govindaraju
f27df33b02 SPARC backend: correct ICC/FCC uses for ADDX and SELECT_CC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123281 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:38:28 +00:00
Cameron Zwarich
d8c120bbd3 Dial back the speculative fix for PR8954 a bit, so that we only recompute dominators 
once at the beginning of GVN instead of once per iteration.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123278 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:14:42 +00:00
Jakob Stoklund Olesen
b08773749a Don't insert DBG_VALUE instructions after the first terminator. 
For one, MachineBasicBlock::getFirstTerminator() doesn't understand what is
happening, and it also makes sense to have all control flow run through the
DBG_VALUE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123277 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:11:16 +00:00
Evan Cheng
b72d2a92b7 Clean up ARM subtarget code by using Triple ADT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123276 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 21:46:47 +00:00
Devang Patel
a36478feac Appropriately truncate debug info range in dwarf output. 
This is not yet completely enabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123274 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 21:42:10 +00:00