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5233 Commits

Author SHA1 Message Date
Owen Anderson
a6d1d8dec2 The functionality being tested was removed because it was horribly unsafe. 
llvm-svn: 49610
 2008-04-13 09:51:06 +00:00
Arnold Schwaighofer
82af0e6a43 This patch corrects the handling of byval arguments for tailcall 
optimized x86-64 (and x86) calls so that they work (... at least for
my test cases).

Should fix the following problems:

Problem 1: When i introduced the optimized handling of arguments for
tail called functions (using a sequence of copyto/copyfrom virtual
registers instead of always lowering to top of the stack) i did not
handle byval arguments correctly e.g they did not work at all :).

Problem 2: On x86-64 after the arguments of the tail called function
are moved to their registers (which include ESI/RSI etc), tail call
optimization performs byval lowering which causes xSI,xDI, xCX
registers to be overwritten. This is handled in this patch by moving
the arguments to virtual registers first and after the byval lowering
the arguments are moved from those virtual registers back to
RSI/RDI/RCX.

llvm-svn: 49584
 2008-04-12 18:11:06 +00:00
Dan Gohman
15edbf989f Drop ISD::MEMSET, ISD::MEMMOVE, and ISD::MEMCPY, which are not Legal 
on any current target and aren't optimized in DAGCombiner. Instead
of using intermediate nodes, expand the operations, choosing between
simple loads/stores, target-specific code, and library calls,
immediately.

Previously, the code to emit optimized code for these operations
was only used at initial SelectionDAG construction time; now it is
used at all times. This fixes some cases where rep;movs was being
used for small copies where simple loads/stores would be better.

This also cleans up code that checks for alignments less than 4;
let the targets make that decision instead of doing it in
target-independent code. This allows x86 to use rep;movs in
low-alignment cases.

Also, this fixes a bug that resulted in the use of rep;stos for
memsets of 0 with non-constant memory size when the alignment was
at least 4. It's better to use the library in this case, which
can be significantly faster when the size is large.

This also preserves more SourceValue information when memory
intrinsics are lowered into simple loads/stores.

llvm-svn: 49572
 2008-04-12 04:36:06 +00:00
Dan Gohman
41f9d24d52 Fix a bug that prevented x86-64 from using rep.movsq for 
8-byte-aligned data.

llvm-svn: 49571
 2008-04-12 02:35:39 +00:00
Evan Cheng
6e52146f16 If a PHI node has a single implicit_def source, replace it with an implicit_def instead of a copy. 
llvm-svn: 49543
 2008-04-11 17:54:45 +00:00
Owen Anderson
15e930588a Add testcase for PR2213. 
llvm-svn: 49517
 2008-04-11 05:13:32 +00:00
Evan Cheng
56ca7e285a New test. 
llvm-svn: 49514
 2008-04-10 23:49:09 +00:00
Dan Gohman
318d9a6605 Teach InstCombine's ComputeMaskedBits to handle pointer expressions 
in addition to integer expressions. Rewrite GetOrEnforceKnownAlignment
as a ComputeMaskedBits problem, moving all of its special alignment
knowledge to ComputeMaskedBits as low-zero-bits knowledge.

Also, teach ComputeMaskedBits a few basic things about Mul and PHI
instructions.

This improves ComputeMaskedBits-based simplifications in a few cases,
but more noticeably it significantly improves instcombine's alignment
detection for loads, stores, and memory intrinsics.

llvm-svn: 49492
 2008-04-10 18:43:06 +00:00
Evan Cheng
6f164e3814 A copy instruction may use a register multiple times on some targets. Change them all. 
llvm-svn: 49491
 2008-04-10 18:38:47 +00:00
Chris Lattner
3b289289a7 Fix the x86-64 side of PR2108 by adding a v2f64 version of 
MOVZQI2PQIrr.  This would be better handled as a dag combine 
(with the goal of eliminating the bitconvert) but I don't know
how to do that safely.  Thoughts welcome.

llvm-svn: 49463
 2008-04-10 05:13:43 +00:00
Evan Cheng
1803e20a62 Teach branch folding pass about implicit_def instructions. Unfortunately we can't just eliminate them since register scavenger expects every register use to be defined. However, we can delete them when there are no intra-block uses. Carefully removing some implicit def's which enable more blocks to be optimized away. 
llvm-svn: 49461
 2008-04-10 02:32:10 +00:00
Evan Cheng
def576f9e6 - More aggressively coalescing away copies whose source is defined by an implicit_def. 
- Added insert_subreg coalescing support.

llvm-svn: 49448
 2008-04-09 20:57:25 +00:00
Chris Lattner
be01a5f699 Generalize getUnaryFloatFunction to handle any FP unary function, automatically 
figuring out the suffix to use.  implement pow(2,x) -> exp2(x).

llvm-svn: 49437
 2008-04-09 17:48:11 +00:00
Chris Lattner
5d0cbe7d22 remove capital letter from test name. 
llvm-svn: 49436
 2008-04-09 17:46:36 +00:00
Owen Anderson
ca7e0e21f3 Factor a bunch of functionality related to memcpy and memset transforms out of 
GVN and into its own pass.

llvm-svn: 49419
 2008-04-09 08:23:16 +00:00
Evan Cheng
f35cc57821 Missed a hasInterval check. 
llvm-svn: 49415
 2008-04-09 01:30:15 +00:00
Chris Lattner
976ea8990e many cleanups to the pow optimizer. Allow it to handle powf, 
add support for  pow(x, 2.0) -> x*x.

llvm-svn: 49411
 2008-04-09 00:07:45 +00:00
Duncan Sands
b430cf3b7c Check that bodies and calls but not declarations 
are marked nounwind when compiling without
-fexceptions.

llvm-svn: 49393
 2008-04-08 19:31:52 +00:00
Dale Johannesen
5ac0a0ed21 Rename -disable-required-unwind-tables to -unwind-tables-optional. 
llvm-svn: 49391
 2008-04-08 18:10:08 +00:00
Gabor Greif
80acb912a9 merge r48768 from branches/ggreif/parallelized-test 
llvm-svn: 49382
 2008-04-08 15:22:41 +00:00
Dale Johannesen
576a7685f2 Missed one. 
llvm-svn: 49365
 2008-04-08 00:14:59 +00:00
Dale Johannesen
3f992b224e Add -disable-required-unwind-tables to tests 
that need it (usually, grepping for some string
found in unwind info)

llvm-svn: 49364
 2008-04-08 00:14:17 +00:00
Duncan Sands
79af9d68ec Testcase for pr2169. 
llvm-svn: 49344
 2008-04-07 17:03:16 +00:00
Evan Cheng
6c58f2397d Fix test. 
llvm-svn: 49343
 2008-04-07 17:02:18 +00:00
Chris Lattner
f88214caca fix this testcase to pass and remove a duplicate instance of itself. 
llvm-svn: 49281
 2008-04-06 21:39:17 +00:00
Torok Edwin
34e6889671 Prefer to expand mask for xor to -1, so we have a chance to turn it into a not. 
If it cannot be expanded, it will keep the old behaviour and try to shrink the constant.
Part of enhancement for PR2191.

llvm-svn: 49280
 2008-04-06 21:23:02 +00:00
Evan Cheng
d7d1c94e67 1. IMPLICIT_DEF can *re-define* any register. 
2. Coalescer can now create an interesting situation where a register def can
   reaches itself without being killed.

llvm-svn: 49246
 2008-04-05 01:27:09 +00:00
Evan Cheng
4d7b2ab16f Favors pshufd over shufps when shuffling elements from one vector. pshufd is faster than shufps. 
llvm-svn: 49244
 2008-04-05 00:30:36 +00:00
Evan Cheng
f045d86660 New test case. 
llvm-svn: 49190
 2008-04-03 21:25:03 +00:00
Dale Johannesen
ebfa6edc65 Testcase for EH with functions whose names are stripped. 
llvm-svn: 49111
 2008-04-02 20:16:41 +00:00
Dan Gohman
168b2b1300 Speculatively micro-optimize memory-zeroing calls on Darwin 10. 
llvm-svn: 49048
 2008-04-01 20:38:36 +00:00
Evan Cheng
c2f298f318 More soft fp fixes. 
llvm-svn: 49016
 2008-04-01 02:18:22 +00:00
Evan Cheng
a38ae9c502 Unbreak ARM / Thumb soft FP support. 
llvm-svn: 49012
 2008-04-01 01:50:16 +00:00
Dale Johannesen
d9a5b77269 Mark functions in some tests as 'nounwind'. Generating 
EH info for these functions causes the tests to fail for
random reasons (e.g. looking for 'or' or counting lines
with asm-printer; labels count as lines.)

llvm-svn: 49003
 2008-03-31 23:20:09 +00:00
Evan Cheng
a3ce7b4c76 It's not safe to fold a load from GV stub or constantpool into a two-address use. 
llvm-svn: 49002
 2008-03-31 23:19:51 +00:00
Dan Gohman
f223eaafcd Fix a DAGCombiner optimization to respect volatile qualification. 
llvm-svn: 48994
 2008-03-31 20:32:52 +00:00
Chris Lattner
12cecbbb25 add a testcase for forming memset from noncontiguous stores. 
llvm-svn: 48938
 2008-03-29 04:51:35 +00:00
Dan Gohman
227e702cae Fix a tokenfactor node to use the load chain rather than the 
load value. This fixes PR2177.

llvm-svn: 48932
 2008-03-28 23:45:16 +00:00
Devang Patel
0951d2a8d3 add another testcase 
llvm-svn: 48881
 2008-03-27 17:13:55 +00:00
Devang Patel
a04c63181f New test case. 
llvm-svn: 48858
 2008-03-27 01:51:31 +00:00
Evan Cheng
6cbce6b602 Fix a memory bug: increment an iterator of a deleted machine instr. 
llvm-svn: 48853
 2008-03-27 01:27:25 +00:00
Erick Tryzelaar
0efea4df76 Expose ExecutionEngine::getTargetData() to c and ocaml bindings. 
llvm-svn: 48851
 2008-03-27 00:27:14 +00:00
Evan Cheng
6fc37c8f25 One more coalescer fix wrt deadness propagation. 
llvm-svn: 48837
 2008-03-26 20:15:49 +00:00
Evan Cheng
8d222d6221 Avoid commuting a def MI in order to coalesce a copy instruction away if any use of the same val# is a copy instruction that has already been coalesced. 
llvm-svn: 48833
 2008-03-26 19:03:01 +00:00
Dale Johannesen
8c1e95810f Use ## for comment delimiter on darwin x86-32, so 
llvm's output .s files will go through gcc -std=c99
without triggering preprocesser errors.  Approach
suggested by Daveed Vandevoorde.

llvm-svn: 48808
 2008-03-25 23:29:30 +00:00
Evan Cheng
8cb64d8e8b Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
llvm-svn: 48792
 2008-03-25 20:08:07 +00:00
Evan Cheng
563b265f37 Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
llvm-svn: 48791
 2008-03-25 20:07:13 +00:00
Dan Gohman
58ad056286 Add CMP32mr and friends to the load-unfolding table. Among 
other things, this allows the scheduler to unfold a load operand
in the 2008-01-08-SchedulerCrash.ll testcase, so it now successfully
clones the comparison to avoid a pushf+popf.

llvm-svn: 48777
 2008-03-25 16:53:19 +00:00
Gordon Henriksen
2d762e28e9 Tests for the instruction iterator bindings. 
llvm-svn: 48775
 2008-03-25 16:35:08 +00:00
Tanya Lattner
b6a27ed83f Byebye llvm-upgrade! 
llvm-svn: 48762
 2008-03-25 04:26:08 +00:00
Evan Cheng
7c1dcd8371 lastRegisterUse() should ignore identity copies. Those will be erased. 
llvm-svn: 48759
 2008-03-25 02:02:19 +00:00
Devang Patel
a7084b048f check struct layout 
llvm-svn: 48758
 2008-03-25 00:47:49 +00:00
Bill Wendling
2097b72649 Use the bit size of the operand instead of the hard-coded 32 to generate the 
mask.

llvm-svn: 48750
 2008-03-24 23:16:37 +00:00
Evan Cheng
dbdf48276a - SSE4.1 extractfps extracts a f32 into a gr32 register. Very useful! Not. Fix the instruction specification and teaches lowering code to use it only when the only use is a store instruction. 
llvm-svn: 48746
 2008-03-24 21:52:23 +00:00
Devang Patel
425514c509 Add incoming value from header only if phi node has any use inside the loop. 
llvm-svn: 48738
 2008-03-24 20:16:14 +00:00
Devang Patel
25068296ec Fix test name. 
llvm-svn: 48733
 2008-03-24 18:08:07 +00:00
Chris Lattner
97e4d98c2d apparently tclsh doesn't lex like bash. Weird. 
llvm-svn: 48732
 2008-03-24 17:41:57 +00:00
Chris Lattner
3a6d3372f5 pass the option so this test tests the right thing. 
llvm-svn: 48731
 2008-03-24 17:36:38 +00:00
Devang Patel
9548f89eaf Add new test. 
llvm-svn: 48730
 2008-03-24 17:16:39 +00:00
Devang Patel
4ca45ebdf4 Remove incorrect comment. 
llvm-svn: 48728
 2008-03-24 16:58:20 +00:00
Dan Gohman
b9c5e6258f APIntify SelectionDAG's EXTRACT_ELEMENT code. 
llvm-svn: 48726
 2008-03-24 16:38:05 +00:00
Evan Cheng
1d63708523 Transform (zext (or (icmp), (icmp))) to (or (zext (cimp), (zext icmp))) if at least one of the (zext icmp) can be transformed to eliminate an icmp. 
llvm-svn: 48715
 2008-03-24 00:21:34 +00:00
Gordon Henriksen
52f3a08237 Objective Caml bindings for basic block, function, global, and arg iterators. 
llvm-svn: 48711
 2008-03-23 22:21:29 +00:00
Bill Wendling
f607f27320 New testcase. 
llvm-svn: 48697
 2008-03-22 22:27:01 +00:00
Owen Anderson
2f91173e40 Use normal naming convention for test. 
llvm-svn: 48693
 2008-03-22 21:08:33 +00:00
Anton Korobeynikov
25a0157827 Add testcase for prev. commit. Minor fixes 
llvm-svn: 48686
 2008-03-22 08:37:05 +00:00
Anton Korobeynikov
06f3b7f4ee Support chained aliases for LLVM IR printing. This fixes PR2145 
llvm-svn: 48684
 2008-03-22 08:17:17 +00:00
Chris Lattner
16f62d36e8 implement an initial hack at a straight-line store -> memset optimization. 
This fires dozens of times across spec and multisource, but I don't know
if it actually speeds stuff up.  Hopefully the testers will show something
nice :)

llvm-svn: 48680
 2008-03-22 05:37:16 +00:00
Evan Cheng
874aee2eec Teach DAG combiner to commute commutable binary nodes in order to achieve sdisel CSE. 
llvm-svn: 48673
 2008-03-22 01:55:50 +00:00
Dan Gohman
59aeac6320 Handle getresult instructions in different basic blocks 
from their aggregate operands by moving the getresult
instructions.

llvm-svn: 48657
 2008-03-21 21:01:32 +00:00
Duncan Sands
8e40ac013e Testcase for PR2160. 
llvm-svn: 48655
 2008-03-21 20:22:11 +00:00
Chris Lattner
8a4fa95cae Add support for calls that return two FP values in 
ST(0)/ST(1).

llvm-svn: 48634
 2008-03-21 06:38:26 +00:00
Chris Lattner
933d0d318b disable a bogus assertion. 
llvm-svn: 48633
 2008-03-21 06:01:05 +00:00
Chris Lattner
260473f983 Enable support for returning two long-double values in ST(0)/ST(1). 
This allows us to compile fp-stack-2results.ll into:

_test:
	fldz
	fld1
	ret

which returns 1 in ST(0) and 0 in ST(1).  This is needed for x86-64
_Complex long double.

llvm-svn: 48632
 2008-03-21 05:57:20 +00:00
Chris Lattner
96cdf21ed4 Teach masked value is zero about add and sub, and use MVIZ to 
simplify things like (X & 4) >> 1 == 2  --> (X & 4) == 4.

since it is obvious that the shift doesn't remove any bits.

llvm-svn: 48631
 2008-03-21 05:19:58 +00:00
Evan Cheng
4ae9fee64c Undo 48570. Correctly match mmx shift instructions with an immediate operand. 
llvm-svn: 48627
 2008-03-21 00:40:09 +00:00
Evan Cheng
8ecb189245 Fix this xform: (sra (shl X, m), result_size) -> (sign_extend (trunc (shl X, result_size - n - m))) 
llvm-svn: 48578
 2008-03-20 02:18:41 +00:00
Devang Patel
e4f39224eb Keep track of analysis information inherited from Module pass manager. 
llvm-svn: 48576
 2008-03-20 01:09:53 +00:00
Scott Michel
e747d20130 Add more patterns to match in the integer comparison test harnesses. 
Fix bugs encountered, mostly due to range matching for immediates;
the CellSPU's 10-bit immediates are sign extended, covering a
larger range of unsigned values.

llvm-svn: 48575
 2008-03-20 00:51:36 +00:00
Evan Cheng
6f729b2820 Add intrinsics to match mmx shift builtin's with immediate operand. 
llvm-svn: 48569
 2008-03-19 23:38:52 +00:00
Dan Gohman
c9dec33f3f Add support for multiple return values for the PPC target by 
converting call result lowering to use the CallingConvLowering
infastructure.

llvm-svn: 48552
 2008-03-19 21:39:28 +00:00
Christopher Lamb
958b0494c3 Fix X86's isTruncateFree to not claim that truncate to i1 is free. This fixes Bill's testcase that failed for r48491. 
llvm-svn: 48542
 2008-03-19 08:30:06 +00:00
Tanya Lattner
52e5896b3f Upgrade tests. 
llvm-svn: 48538
 2008-03-19 07:28:33 +00:00
Tanya Lattner
f0dc625b4f Upgrade tests. 
llvm-svn: 48536
 2008-03-19 05:39:35 +00:00
Tanya Lattner
be72114460 Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48530
 2008-03-19 04:36:04 +00:00
Tanya Lattner
88c66b1027 Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48529
 2008-03-19 04:14:49 +00:00
Tanya Lattner
0721aaa8f7 Remove llvm-upgrade and update tests. 
llvm-svn: 48527
 2008-03-19 03:47:13 +00:00
Evan Cheng
e9aa507edc Fixed a coalescer bug caused by a typo. 
llvm-svn: 48526
 2008-03-19 02:26:36 +00:00
Gordon Henriksen
15006d5da0 C and Objective Caml bindings for the various getParent methods of the IR. 
Based on Erick Tryzelaar's patch.

llvm-svn: 48523
 2008-03-19 01:11:35 +00:00
Evan Cheng
3d9309c11d Fix live variables issues: 
1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue.
2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register:
   = EAX, AX<imp-use,kill>
...
AX =
In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things.

llvm-svn: 48521
 2008-03-19 00:52:20 +00:00
Evan Cheng
5ac87b837e Fix a x86-64 isel lowering bug that's been around forever. A x86-64 varargs function implicitly reads X86::AL, don't clobber it! 
llvm-svn: 48515
 2008-03-18 23:36:35 +00:00
Bill Wendling
c8f3fc7c3d It might be nice to have this run as x86 on non-x86 platforms... 
llvm-svn: 48511
 2008-03-18 22:38:22 +00:00
Bill Wendling
5ea2aec3ac Temporarily revert r48491. It's breaking test/CodeGen/X86/xorl.ll. 
llvm-svn: 48510
 2008-03-18 22:29:51 +00:00
Daniel Berlin
0f20fa71ba Fix PR 2160 by making sure arguments to external functions get marked as pointing to anything 
llvm-svn: 48509
 2008-03-18 22:22:53 +00:00
Tanya Lattner
240dd2a657 Do not pass -g flag when compiling tests, so remove the C.Flags. This only happens if you have a debug build of llvm. 
llvm-svn: 48498
 2008-03-18 19:59:04 +00:00
Dale Johannesen
7f51ebc90c Make conversions of i8/i16 to ppcf128 work. 
llvm-svn: 48493
 2008-03-18 17:28:38 +00:00
Christopher Lamb
1d70509b55 Target independent DAG transform to use truncate for field extraction + sign extend on targets where this is profitable. Passes nightly on x86-64. 
llvm-svn: 48491
 2008-03-18 16:46:39 +00:00
Evan Cheng
5750c3cd1e Rewrite code that propagate isDead information after a dead copy is coalesced. This remove some ugly spaghetti code and fixed a number of subtle bugs. 
llvm-svn: 48490
 2008-03-18 08:26:47 +00:00
Tanya Lattner
9bd47b05dd Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48484
 2008-03-18 04:14:37 +00:00
Tanya Lattner
60b7b29981 Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48483
 2008-03-18 03:45:45 +00:00
Chris Lattner
bb335409c2 ensure we continue matching x86-64 rotates. 
llvm-svn: 48437
 2008-03-17 01:35:03 +00:00
Gordon Henriksen
04a60ddcd2 C and Objective Caml bindings for the TargetData class. 
llvm-svn: 48422
 2008-03-16 20:08:03 +00:00
Gordon Henriksen
8c33afc50c C and Objective Caml bindings for several scalar transforms. 
Patch originally by Erick Tryzelaar, but has been modified somewhat.

llvm-svn: 48419
 2008-03-16 16:32:40 +00:00
Nick Lewycky
489493948a All of these tests had out of date syntax and were never even running through 
llvm-upgrade because nobody noticed them failing.

Update to use new syntax and actually check for the right failure by looking at
the error message.

llvm-svn: 48417
 2008-03-16 07:55:46 +00:00
Nick Lewycky
30cabbc12b Functions are allowed to return structures. (Note that this test never failed.) 
llvm-svn: 48416
 2008-03-16 07:49:49 +00:00
Nick Lewycky
d2914b7905 Regressions/ is long gone. 
llvm-svn: 48415
 2008-03-16 07:31:23 +00:00
Gordon Henriksen
caeafc4911 C and Objective Caml bindings for PassManagers. 
llvm-svn: 48413
 2008-03-16 04:20:44 +00:00
Evan Cheng
3612a7ed30 Fix PR2138. Apparently any modification to a std::multimap (including remove entries for a different key) can invalidate multimap iterators. 
llvm-svn: 48371
 2008-03-14 20:44:01 +00:00
Bill Wendling
7d054f8b3f The inst combining of inttoptr into GEP with one index was using the bit size of 
the type instead of the byte size. This was causing troublesome mis-compilations.

True to form, this took 2 days to find and is a one-line fix. :-P

llvm-svn: 48354
 2008-03-14 05:12:19 +00:00
Dan Gohman
486f664806 More APInt-ification. 
llvm-svn: 48344
 2008-03-13 22:13:53 +00:00
Owen Anderson
6c2454d9d1 Fix a bug in GVN that Duncan noticed, where we potentially need to insert a 
pointer bitcast when performing return slot optimization.

llvm-svn: 48343
 2008-03-13 22:07:10 +00:00
Tanya Lattner
795aaef9d1 Fix error in testing for END. notation. 
Patch by Julien Lerouge. Thanks!

llvm-svn: 48342
 2008-03-13 22:02:51 +00:00
Evan Cheng
53c3dd0267 New test case. 
llvm-svn: 48338
 2008-03-13 08:05:02 +00:00
Evan Cheng
a76bb6e64e A test case I forgot to check in. 
llvm-svn: 48335
 2008-03-13 06:42:46 +00:00
Evan Cheng
0b8b1647dd TwoAddressInstructionPass enhancement. After it converts a two address instruction into a 3-address one, sink it past the instruction that kills the read-mod-write register if its definition is used past the kill. This reduces the number of live register by one. 
llvm-svn: 48333
 2008-03-13 06:37:55 +00:00
Evan Cheng
620fd19798 Experimental scheduler change to schedule / coalesce the copies added for function livein's. Take 2008-03-10-RegAllocInfLoop.ll, the schedule looks like this after these copies are inserted: 
entry: 0x12049d0, LLVM BB @0x1201fd0, ID#0:
Live Ins: %EAX %EDX %ECX
        %reg1031<def> = MOVPC32r 0
        %reg1032<def> = ADD32ri %reg1031, <es:_GLOBAL_OFFSET_TABLE_>, %EFLAGS<imp-def>
        %reg1028<def> = MOV32rr %EAX
        %reg1029<def> = MOV32rr %EDX
        %reg1030<def> = MOV32rr %ECX
        %reg1027<def> = MOV8rm %reg0, 1, %reg0, 0, Mem:LD(1,1) [0x1201910 + 0]
        %reg1025<def> = MOV32rr %reg1029
        %reg1026<def> = MOV32rr %reg1030
        %reg1024<def> = MOV32rr %reg1028

The copies unnecessarily increase register pressure and it will end up requiring a physical register to be spilled.

With -schedule-livein-copies:
entry: 0x12049d0, LLVM BB @0x1201fa0, ID#0:
Live Ins: %EAX %EDX %ECX
        %reg1031<def> = MOVPC32r 0
        %reg1032<def> = ADD32ri %reg1031, <es:_GLOBAL_OFFSET_TABLE_>, %EFLAGS<imp-def>
        %reg1024<def> = MOV32rr %EAX
        %reg1025<def> = MOV32rr %EDX
        %reg1026<def> = MOV32rr %ECX
        %reg1027<def> = MOV8rm %reg0, 1, %reg0, 0, Mem:LD(1,1) [0x12018e0 + 0]

Much better!

llvm-svn: 48307
 2008-03-12 22:19:41 +00:00
Dan Gohman
2ec41788ab Fix this test on hosts that don't have sse2. 
llvm-svn: 48296
 2008-03-12 20:40:51 +00:00
Chris Lattner
e72cd8b5a4 no need to keep around this output. 
llvm-svn: 48285
 2008-03-12 17:14:06 +00:00
Owen Anderson
5887233a3f Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and 
safer (when the passed pointer might be invalid).  Thanks to Duncan and Chris for the idea behind this, 
and extra thanks to Duncan for helping me work out the trap-safety.

llvm-svn: 48280
 2008-03-12 07:37:44 +00:00
Dan Gohman
2a124430e9 Make this test x86-specific for now; targets that don't use 
the automated CallingConv code to handle return values typically
don't support multiple return values.

llvm-svn: 48265
 2008-03-12 00:25:14 +00:00
Devang Patel
9e4d8236fc Fix attribute handling. 
llvm-svn: 48262
 2008-03-12 00:07:03 +00:00
Dan Gohman
155ffdd955 Basic feature test for multiple return values in codegen. 
llvm-svn: 48260
 2008-03-11 23:53:16 +00:00
Anton Korobeynikov
d2fd135594 Testcase for PR2137 
llvm-svn: 48258
 2008-03-11 22:43:42 +00:00
Devang Patel
54b2c77a4e Handle multiple ret values. 
llvm-svn: 48254
 2008-03-11 22:24:29 +00:00
Dan Gohman
34ea45f10d Check to see if a two-entry PHI block can be simplified 
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.

llvm-svn: 48252
 2008-03-11 21:53:06 +00:00
Dan Gohman
05907c9f06 Make this test more challenging to help it avoid being 
optimized away before it tests what it is intended to test.

llvm-svn: 48251
 2008-03-11 21:47:57 +00:00
Anton Korobeynikov
efa9405b94 Update testcase for recent aliases change 
llvm-svn: 48250
 2008-03-11 21:42:20 +00:00
Dan Gohman
f9f25bd41b Add a test to ensure that all-ones vectors are materialized with pcmpeqd. 
llvm-svn: 48247
 2008-03-11 21:37:00 +00:00
Dan Gohman
1fece90de9 Use the correct value for InSignBit. 
llvm-svn: 48245
 2008-03-11 21:29:43 +00:00
Chris Lattner
fd2c24af72 Implement basic support for the 'f' register class constraint. This basically 
works, but probably won't if you mix it with 't' or 'u' yet.

llvm-svn: 48243
 2008-03-11 19:50:13 +00:00
Dale Johannesen
c03216ac3e The feature this is testing did not work in the general case, 
and has been removed.

llvm-svn: 48232
 2008-03-11 17:48:26 +00:00
Evan Cheng
6a30fc4e94 Learn how to xfail a test. 
llvm-svn: 48219
 2008-03-11 07:51:31 +00:00
Evan Cheng
af1c76846d When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting. 
llvm-svn: 48218
 2008-03-11 07:19:34 +00:00
Evan Cheng
9ae65a13c3 XFAIL due to Dale's change. 
llvm-svn: 48216
 2008-03-11 07:15:44 +00:00
Devang Patel
6c189c16b5 Initial multiple return values support. 
llvm-svn: 48210
 2008-03-11 05:46:42 +00:00
Dan Gohman
2674ad5bed Upgrade this test. 
llvm-svn: 48207
 2008-03-11 02:19:59 +00:00
Dan Gohman
85bfbe2293 Generalize ExpandIntToFP to handle the case where the operand is legal 
and it's the result that requires expansion. This code is a little confusing
because the TargetLoweringInfo tables for [US]INT_TO_FP use the operand type
(the integer type) rather than the result type. 

llvm-svn: 48206
 2008-03-11 01:59:03 +00:00
Scott Michel
599ff689d0 - Style cleanup in IA64ISelLowering.h: add 'virtual' keyword for consistency. 
- Add test pattern matching in CellSPU's icmp32.ll test harness
- Fix CellSPU fcmp.ll-generated assert.

llvm-svn: 48197
 2008-03-10 23:49:09 +00:00
Chris Lattner
f0684bfd16 Don't emit FP_REG_KILL into a block that just returns. Nothing 
can be live out of the block anyway, so it isn't needed.

llvm-svn: 48192
 2008-03-10 23:34:12 +00:00
Dan Gohman
67aed9bbb0 Implement more support for fp-to-i128 and i128-to-fp conversions. 
llvm-svn: 48189
 2008-03-10 23:03:31 +00:00
Bill Wendling
8e3a4a45ce Update llc flags for PPC register scavenger. 
llvm-svn: 48187
 2008-03-10 22:59:08 +00:00
Anton Korobeynikov
e727d75dfa This passes now 
llvm-svn: 48178
 2008-03-10 22:34:11 +00:00
Dan Gohman
47137eba06 Fix mul expansion to check the correct number of bits for 
zero extension when checking if an unsigned multiply is
safe.

llvm-svn: 48171
 2008-03-10 20:42:19 +00:00
Dale Johannesen
6713367062 The __sync primitives only work on x86 and alpha; 
xfail this test elsewhere.

llvm-svn: 48164
 2008-03-10 18:38:31 +00:00
Devang Patel
659c71126e Simplify 
llvm-svn: 48163
 2008-03-10 18:38:30 +00:00
Dale Johannesen
6123256f55 Add -m32 to compilation line; test is only valid in 
32-bit environment.  PR 2136.

llvm-svn: 48159
 2008-03-10 17:56:53 +00:00
Dale Johannesen
62a0b6a79b These tests don't work unless SSE2 is active. 
Judging from the checking comments this is intentional,
so add the flag (makes them pass on non-x86 host).

llvm-svn: 48157
 2008-03-10 17:33:57 +00:00
Dale Johannesen
c9ecee85c4 There is no "-mattr=+sse1" flag; fix test for non-x86 hosts. 
llvm-svn: 48156
 2008-03-10 17:13:37 +00:00
Scott Michel
38f8a1043a Integer comparison tests for CellSPU. 
llvm-svn: 48152
 2008-03-10 16:58:52 +00:00
Evan Cheng
02b66c3a32 - Fix a subtle bug in RemoveCopyByCommutingDef. ALR is the live range where the source is defined; BLR is the live range which is defined by the copy. 
If ALR and BLR overlaps and end of BLR extends beyond end of ALR, e.g.                                                                                                 
 A = or A, B                                                                                                                                                            
 ...                                                                                                                                                                    
 B = A                                                                                                                                                                  
 ...                                                                                                                                                                    
 C = A<kill>                                                                                                                                                            
 ...                                                                                                                                                                    
   = B                                                                                                                                                                  
                                                                                                                                                                        
then do not add kills of A to the newly created B interval.
- Also fix some kill info update bug.

llvm-svn: 48141
 2008-03-10 08:11:32 +00:00
Tanya Lattner
8ac346c316 Remove llvm-upgrade and update tests. 
llvm-svn: 48137
 2008-03-10 07:21:50 +00:00
Evan Cheng
3c0ddc999f Avoid creating BUILD_VECTOR of all zero elements of "non-normalized" type (e.g. v8i16 on x86) after legalizer. Instruction selection does not expect to see them. In all likelihood this can only be an issue in a bugpoint reduced test case. 
llvm-svn: 48136
 2008-03-10 07:19:13 +00:00
Chris Lattner
95a37b6592 remove an execution test. 
llvm-svn: 48135
 2008-03-10 06:53:14 +00:00
Chris Lattner
689667aced switch from hard coded g++/as tools to the ones detected from 
the build system.  Patch by Joachim Durchholz  for PR2121

llvm-svn: 48134
 2008-03-10 06:52:10 +00:00
Chris Lattner
ee2fc96a32 Fix a typo 
llvm-svn: 48133
 2008-03-10 06:49:40 +00:00
Chris Lattner
1f7a88ce5f Fix PR2120 by changing the replacement order to change compile_cxx 
before compile_c.  Patch by Joachim Durchholz!

llvm-svn: 48132
 2008-03-10 06:45:35 +00:00
Nick Lewycky
5dd879d5b5 Turn unwind_to into "unwinds to". 
llvm-svn: 48123
 2008-03-10 02:20:00 +00:00
Anton Korobeynikov
72e4cbe457 This works on x86_64 
llvm-svn: 48121
 2008-03-09 22:24:03 +00:00
Evan Cheng
53424806b1 Fix RUN line. 
llvm-svn: 48116
 2008-03-09 19:55:22 +00:00
Anton Korobeynikov
aab81a09ef Temporary XFAIL the test, until I'll commit a fix 
llvm-svn: 48110
 2008-03-09 16:24:04 +00:00
Chris Lattner
b6bfedbcfd teach X86InstrInfo::copyRegToReg how to copy into ST(0) from 
an RFP register class.

Teach ScheduleDAG how to handle CopyToReg with different src/dst 
reg classes.

This allows us to compile trivial inline asms that expect stuff
on the top of x87-fp stack.

llvm-svn: 48107
 2008-03-09 09:15:31 +00:00
Chris Lattner
8d0203478f Add ScheduleDAG support for copytoreg where the src/dst register are 
in different register classes, e.g. copy of ST(0) to RFP*.  This gets
some really trivial inline asm working that plops things on the top of
stack (PR879)

llvm-svn: 48105
 2008-03-09 08:49:15 +00:00
Tanya Lattner
9aa573954c Remove llvm-upgrade and update tests. 
llvm-svn: 48103
 2008-03-09 08:16:40 +00:00
Nick Lewycky
4732d3c9b7 Firstly, having a BranchInst isn't exclusive with having an unwind_to. 
Secondly, we have to check whether the branch is actually pointing to the block
with the unwind in it. We could have gotten here because of the unwind_to alone.

llvm-svn: 48099
 2008-03-09 07:50:37 +00:00
Nick Lewycky
e93a1819dc A BB that unwind_to an "unwind" inst is that same as one that doesn't unwind_to 
at all.

llvm-svn: 48096
 2008-03-09 07:36:38 +00:00
Chris Lattner
b9a4c86fbf reduce this testcase more 
llvm-svn: 48092
 2008-03-09 06:57:21 +00:00
Chris Lattner
b628208161 Finish implementing a readme entry: when inserting an i64 variable 
into a vector of zeros or undef, and when the top part is obviously
zero, we can just use movd + shuffle.  This allows us to compile
vec_set-B.ll into:

_test3:
	movl	$1234567, %eax
	andl	4(%esp), %eax
	movd	%eax, %xmm0
	ret

instead of:

_test3:
	subl	$28, %esp
	movl	$1234567, %eax
	andl	32(%esp), %eax
	movl	%eax, (%esp)
	movl	$0, 4(%esp)
	movq	(%esp), %xmm0
	addl	$28, %esp
	ret

llvm-svn: 48090
 2008-03-09 05:42:06 +00:00
Nick Lewycky
d98272094e Update the inliner and simplifycfg to handle unwind_to. 
llvm-svn: 48086
 2008-03-09 05:10:13 +00:00
Nick Lewycky
980738baf2 Prune the unwind_to labels on BBs that don't need them. Another step in the 
removal of invoke, PR1269.

llvm-svn: 48084
 2008-03-09 04:55:16 +00:00
Chris Lattner
17f68a3075 Implement a readme entry, compiling 
#include <xmmintrin.h>
__m128i doload64(short x) {return _mm_set_epi16(0,0,0,0,0,0,0,1);}

into:
	movl	$1, %eax
	movd	%eax, %xmm0
	ret

instead of a constant pool load.

llvm-svn: 48063
 2008-03-09 01:05:04 +00:00
Chris Lattner
1b16dc4a6e upgrade this test 
llvm-svn: 48062
 2008-03-09 00:32:10 +00:00
Chris Lattner
24031c9426 make this test harder 
llvm-svn: 48061
 2008-03-09 00:30:06 +00:00
Chris Lattner
7173d3bd70 Teach SD some vector identities, allowing us to compile vec_set-9 into: 
_test3:
	movd	%rdi, %xmm1
	#IMPLICIT_DEF %xmm0
	punpcklqdq	%xmm1, %xmm0
	ret

instead of:

_test3:
	#IMPLICIT_DEF %rax
	movd	%rax, %xmm0
	movd	%rdi, %xmm1
	punpcklqdq	%xmm1, %xmm0
	ret

This is still not ideal.  There is no reason to two xmm regs.

llvm-svn: 48058
 2008-03-08 23:43:36 +00:00
Andrew Lenharth
5cc35bff2f much simpler test case 
llvm-svn: 48045
 2008-03-08 02:05:22 +00:00
Evan Cheng
dba1dfe962 Implement x86 support for @llvm.prefetch. It corresponds to prefetcht{0|1|2} and prefetchnta instructions. 
llvm-svn: 48042
 2008-03-08 00:58:38 +00:00
Dan Gohman
afeac8050d Add support for calls with i128 return values on ppc64. 
llvm-svn: 48041
 2008-03-08 00:19:12 +00:00
Andrew Lenharth
d8531cff4f add dropped section test case for PR2123 
llvm-svn: 48033
 2008-03-07 21:19:43 +00:00
Dan Gohman
5bf464e1e6 Add support for lowering 128-bit shifts on ppc64. 
llvm-svn: 48029
 2008-03-07 20:36:53 +00:00
Evan Cheng
5f74d1a8dc Fixed a register scavenger bug. If a def is re-defining part of a super register, there must be an implicit def of the super-register on the MI. 
llvm-svn: 48024
 2008-03-07 20:12:54 +00:00
Devang Patel
9543238662 Update inliner to handle functions that return multiple values. 
llvm-svn: 48020
 2008-03-07 20:06:16 +00:00
Devang Patel
a6ec13ef6b Place for sret promotion tests. 
llvm-svn: 48016
 2008-03-07 20:00:15 +00:00
Chris Lattner
aa81dc7d21 mark frem as expand for all legal fp types on x86, regardless of whether 
we're using SSE or not.  This fixes PR2122.

llvm-svn: 48006
 2008-03-07 06:36:32 +00:00
Bill Wendling
f0615bf090 Add testcase. 
llvm-svn: 48005
 2008-03-06 23:34:22 +00:00
Gabor Greif
92e00c1e50 some more spelling changes 
llvm-svn: 47996
 2008-03-06 10:51:21 +00:00
Evan Cheng
9c77211639 Constant fold SIGN_EXTEND_INREG with ashr not lshr. 
llvm-svn: 47992
 2008-03-06 08:20:51 +00:00
Nick Lewycky
635d27b1d5 Exercise the new CFG change. 
llvm-svn: 47990
 2008-03-06 06:55:58 +00:00
Nick Lewycky
c6edcb8904 Commit the testcase too. 
llvm-svn: 47988
 2008-03-06 06:50:03 +00:00
Nick Lewycky
f249c5d5ad Don't try to simplify urem and srem using arithmetic rules that don't work 
under modulo (overflow). Fixes PR1933.

llvm-svn: 47987
 2008-03-06 06:48:30 +00:00
Scott Michel
8dd2324903 Refine Cell's i64 constant generation code to cover more constants where the 
upper and lower 32-bits are the same (in addition to 0 and -1 previously.)

llvm-svn: 47985
 2008-03-06 04:02:54 +00:00
Scott Michel
3c19a3950c - Expand tabs to spaces. 
- select_bits.ll now fully functional now that PR1993 is closed. It was
  previously broken by refactoring in SPUInstrInfo.td and using multiclasses.
- Same for eqv.ll

llvm-svn: 47972
 2008-03-05 23:00:19 +00:00
Evan Cheng
8f5092bea8 Fix a coalescer bug wrt how dead copy interval is shortened. 
llvm-svn: 47966
 2008-03-05 22:09:42 +00:00
Andrew Lenharth
52436854a2 test for something more interesting than not crashing 
llvm-svn: 47962
 2008-03-05 20:24:26 +00:00
Andrew Lenharth
7ac03edf8d sync ops on ptrs, was breaking libgomp 
llvm-svn: 47960
 2008-03-05 19:48:27 +00:00
Anton Korobeynikov
8302c973b4 Fix test not to emit junk into source directory 
llvm-svn: 47947
 2008-03-05 15:44:25 +00:00
Anton Korobeynikov
d78f82b480 Testcase for PR2054 
llvm-svn: 47946
 2008-03-05 15:43:58 +00:00
Chris Lattner
a9fcb187af Generalize FP constant shrinking optimization to apply to any vt 
except ppc long double.  This allows us to shrink constant pool
entries for x86 long double constants, which in turn allows us to
use flds/fldl instead of fldt.

llvm-svn: 47938
 2008-03-05 06:48:13 +00:00
Evan Cheng
e0b3c221ab Add a target lowering hook to control whether it's worthwhile to compress fp constant. 
For x86, if sse2 is available, it's not a good idea since cvtss2sd is slower than a movsd load and it prevents load folding. On x87, it's important to shrink fp constant since fldt is very expensive.

llvm-svn: 47931
 2008-03-05 01:30:59 +00:00
Bill Wendling
cf70f2c2a0 Use -enable-ppc-regscavenger flag for these checks 
llvm-svn: 47916
 2008-03-04 23:16:26 +00:00
Devang Patel
84e9abbb60 Use cast instead of dyn_cast. 
Update test to use multiple return value directly, instead of relying on -sretpromotion.

llvm-svn: 47907
 2008-03-04 21:45:28 +00:00
Devang Patel
a14b91d6a3 Handle multiple return values. 
llvm-svn: 47904
 2008-03-04 21:15:15 +00:00