Commit Graph

5241 Commits

Author SHA1 Message Date
Evan Cheng db390694ff One more coalescer fix wrt deadness propagation.
llvm-svn: 48837
2008-03-26 20:15:49 +00:00
Evan Cheng 289ba4f335 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 ad6c23d5e9 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 df1690dc7c 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 2b72c05992 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 883cbfd0ba 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 40f061cb66 Tests for the instruction iterator bindings.
llvm-svn: 48775
2008-03-25 16:35:08 +00:00
Tanya Lattner 8bf97c2324 Byebye llvm-upgrade!
llvm-svn: 48762
2008-03-25 04:26:08 +00:00
Evan Cheng 7d564c3b4a lastRegisterUse() should ignore identity copies. Those will be erased.
llvm-svn: 48759
2008-03-25 02:02:19 +00:00
Devang Patel 0d48c94e7d check struct layout
llvm-svn: 48758
2008-03-25 00:47:49 +00:00
Bill Wendling 6306183df3 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 615488ab45 - 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 a38f58aa5c 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 c50977b025 Fix test name.
llvm-svn: 48733
2008-03-24 18:08:07 +00:00
Chris Lattner c2c0c8303c apparently tclsh doesn't lex like bash. Weird.
llvm-svn: 48732
2008-03-24 17:41:57 +00:00
Chris Lattner 9ca6bb4f16 pass the option so this test tests the right thing.
llvm-svn: 48731
2008-03-24 17:36:38 +00:00
Devang Patel c8794e71e3 Add new test.
llvm-svn: 48730
2008-03-24 17:16:39 +00:00
Devang Patel ea249e3aef Remove incorrect comment.
llvm-svn: 48728
2008-03-24 16:58:20 +00:00
Dan Gohman d8ea040c31 APIntify SelectionDAG's EXTRACT_ELEMENT code.
llvm-svn: 48726
2008-03-24 16:38:05 +00:00
Evan Cheng c3cf9f872a 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 07a45f4edb Objective Caml bindings for basic block, function, global, and arg iterators.
llvm-svn: 48711
2008-03-23 22:21:29 +00:00
Bill Wendling 7e2a6c4112 New testcase.
llvm-svn: 48697
2008-03-22 22:27:01 +00:00
Owen Anderson e3605ac108 Use normal naming convention for test.
llvm-svn: 48693
2008-03-22 21:08:33 +00:00
Anton Korobeynikov 3f7fab913d Add testcase for prev. commit. Minor fixes
llvm-svn: 48686
2008-03-22 08:37:05 +00:00
Anton Korobeynikov 72d5d42dbc Support chained aliases for LLVM IR printing. This fixes PR2145
llvm-svn: 48684
2008-03-22 08:17:17 +00:00
Chris Lattner 53ccb62712 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 31604a62f6 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 a25dde6fee 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 e37b9c0d34 Testcase for PR2160.
llvm-svn: 48655
2008-03-21 20:22:11 +00:00
Chris Lattner 5abbe6cef5 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 7e59a30e9f disable a bogus assertion.
llvm-svn: 48633
2008-03-21 06:01:05 +00:00
Chris Lattner b6f04a3e0a 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 c44160ce6e 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 92b4488202 Undo 48570. Correctly match mmx shift instructions with an immediate operand.
llvm-svn: 48627
2008-03-21 00:40:09 +00:00
Evan Cheng 7a3e750fd2 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 cbbf291f34 Keep track of analysis information inherited from Module pass manager.
llvm-svn: 48576
2008-03-20 01:09:53 +00:00
Scott Michel bbaf3edace 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 bbba76fc99 Add intrinsics to match mmx shift builtin's with immediate operand.
llvm-svn: 48569
2008-03-19 23:38:52 +00:00
Dan Gohman b9056838d2 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 8fe9109469 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 ab7872c06c Upgrade tests.
llvm-svn: 48538
2008-03-19 07:28:33 +00:00
Tanya Lattner f9d25185d5 Upgrade tests.
llvm-svn: 48536
2008-03-19 05:39:35 +00:00
Tanya Lattner 0ea4c8d706 Upgrade tests to not use llvm-upgrade.
llvm-svn: 48530
2008-03-19 04:36:04 +00:00
Tanya Lattner 1d526b90aa Upgrade tests to not use llvm-upgrade.
llvm-svn: 48529
2008-03-19 04:14:49 +00:00
Tanya Lattner f73582b17c Remove llvm-upgrade and update tests.
llvm-svn: 48527
2008-03-19 03:47:13 +00:00
Evan Cheng 56e9e57d28 Fixed a coalescer bug caused by a typo.
llvm-svn: 48526
2008-03-19 02:26:36 +00:00
Gordon Henriksen 265f780c22 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 44c0b4f754 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 484064370a 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 43784cc27d 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 efb4d9ef80 Temporarily revert r48491. It's breaking test/CodeGen/X86/xorl.ll.
llvm-svn: 48510
2008-03-18 22:29:51 +00:00
Daniel Berlin 5fef9aea12 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 a043a9b0f0 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 12c76db312 Make conversions of i8/i16 to ppcf128 work.
llvm-svn: 48493
2008-03-18 17:28:38 +00:00
Christopher Lamb 3e408d4d82 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 d096ec0a86 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 4e59897d3d Upgrade tests to not use llvm-upgrade.
llvm-svn: 48484
2008-03-18 04:14:37 +00:00
Tanya Lattner baa370b37a Upgrade tests to not use llvm-upgrade.
llvm-svn: 48483
2008-03-18 03:45:45 +00:00
Chris Lattner 3b79fdcae5 ensure we continue matching x86-64 rotates.
llvm-svn: 48437
2008-03-17 01:35:03 +00:00
Gordon Henriksen ab4b7d36cd C and Objective Caml bindings for the TargetData class.
llvm-svn: 48422
2008-03-16 20:08:03 +00:00
Gordon Henriksen 82a0e74f43 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 ec6f1669d3 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 942035d8b3 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 227c7a290b Regressions/ is long gone.
llvm-svn: 48415
2008-03-16 07:31:23 +00:00
Gordon Henriksen 878114bf16 C and Objective Caml bindings for PassManagers.
llvm-svn: 48413
2008-03-16 04:20:44 +00:00
Evan Cheng 84aec09fdb 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 68a930b33e 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 b72127ac4c More APInt-ification.
llvm-svn: 48344
2008-03-13 22:13:53 +00:00
Owen Anderson 7a69e3aef3 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 c21cfe37ec 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 442d708bfb New test case.
llvm-svn: 48338
2008-03-13 08:05:02 +00:00
Evan Cheng ecde45ecb5 A test case I forgot to check in.
llvm-svn: 48335
2008-03-13 06:42:46 +00:00
Evan Cheng 5c26bde55e 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 65e9d5f1a8 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 f7492cf0ec Fix this test on hosts that don't have sse2.
llvm-svn: 48296
2008-03-12 20:40:51 +00:00
Chris Lattner ee8d960ed1 no need to keep around this output.
llvm-svn: 48285
2008-03-12 17:14:06 +00:00
Owen Anderson 6ff0b822b4 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 35f8f07c00 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 fa8667a2dd Fix attribute handling.
llvm-svn: 48262
2008-03-12 00:07:03 +00:00
Dan Gohman 8a361c1f92 Basic feature test for multiple return values in codegen.
llvm-svn: 48260
2008-03-11 23:53:16 +00:00
Anton Korobeynikov 80b53b8f6b Testcase for PR2137
llvm-svn: 48258
2008-03-11 22:43:42 +00:00
Devang Patel 7358165c99 Handle multiple ret values.
llvm-svn: 48254
2008-03-11 22:24:29 +00:00
Dan Gohman 20af5a0fe7 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 8e9ae96a4a 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 6f51973734 Update testcase for recent aliases change
llvm-svn: 48250
2008-03-11 21:42:20 +00:00
Dan Gohman 6616836e71 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 44b4c07cd1 Use the correct value for InSignBit.
llvm-svn: 48245
2008-03-11 21:29:43 +00:00
Chris Lattner 8abed80a69 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 1b12647544 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 34e5b34426 Learn how to xfail a test.
llvm-svn: 48219
2008-03-11 07:51:31 +00:00
Evan Cheng e88a625ecd 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 756f9d9c51 XFAIL due to Dale's change.
llvm-svn: 48216
2008-03-11 07:15:44 +00:00
Devang Patel a7a2075ab8 Initial multiple return values support.
llvm-svn: 48210
2008-03-11 05:46:42 +00:00
Dan Gohman 319234d67c Upgrade this test.
llvm-svn: 48207
2008-03-11 02:19:59 +00:00
Dan Gohman d6819da453 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 92275427e5 - 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 7362d38391 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 f4300950f1 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 24155f7381 Update llc flags for PPC register scavenger.
llvm-svn: 48187
2008-03-10 22:59:08 +00:00
Anton Korobeynikov 1d9848e391 This passes now
llvm-svn: 48178
2008-03-10 22:34:11 +00:00
Dan Gohman 272e234477 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 42d31b0783 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 741f491d90 Simplify
llvm-svn: 48163
2008-03-10 18:38:30 +00:00
Dale Johannesen 94961bd37c 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 fe2c0e2dca 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 65aada6e8f 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 48e3375544 Integer comparison tests for CellSPU.
llvm-svn: 48152
2008-03-10 16:58:52 +00:00
Evan Cheng 4a3c5eab34 - 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 5f4b355f20 Remove llvm-upgrade and update tests.
llvm-svn: 48137
2008-03-10 07:21:50 +00:00
Evan Cheng b5d11980d9 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 176542a970 remove an execution test.
llvm-svn: 48135
2008-03-10 06:53:14 +00:00
Chris Lattner 853b6ba425 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 0c1d7b43a6 Fix a typo
llvm-svn: 48133
2008-03-10 06:49:40 +00:00
Chris Lattner ca43433493 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 fb2c1a999a Turn unwind_to into "unwinds to".
llvm-svn: 48123
2008-03-10 02:20:00 +00:00
Anton Korobeynikov 148562f13e This works on x86_64
llvm-svn: 48121
2008-03-09 22:24:03 +00:00
Evan Cheng b46ec99b7e Fix RUN line.
llvm-svn: 48116
2008-03-09 19:55:22 +00:00
Anton Korobeynikov 971a4660a0 Temporary XFAIL the test, until I'll commit a fix
llvm-svn: 48110
2008-03-09 16:24:04 +00:00
Chris Lattner 86829f0ff7 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 9e07537e8c 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 aa6f5c9ddd Remove llvm-upgrade and update tests.
llvm-svn: 48103
2008-03-09 08:16:40 +00:00
Nick Lewycky 42445be0df 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 f3d637fa14 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 a6ce71fb84 reduce this testcase more
llvm-svn: 48092
2008-03-09 06:57:21 +00:00
Chris Lattner b6387c8a74 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 5ce9b521d7 Update the inliner and simplifycfg to handle unwind_to.
llvm-svn: 48086
2008-03-09 05:10:13 +00:00
Nick Lewycky 4d0ed842b1 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 eef374c197 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 3ed815a3a5 upgrade this test
llvm-svn: 48062
2008-03-09 00:32:10 +00:00
Chris Lattner 031e04b7a3 make this test harder
llvm-svn: 48061
2008-03-09 00:30:06 +00:00
Chris Lattner a1f25b0020 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 e2e69ff426 much simpler test case
llvm-svn: 48045
2008-03-08 02:05:22 +00:00
Evan Cheng 95cf661534 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 d2ab5fd713 Add support for calls with i128 return values on ppc64.
llvm-svn: 48041
2008-03-08 00:19:12 +00:00
Andrew Lenharth b04bde94c1 add dropped section test case for PR2123
llvm-svn: 48033
2008-03-07 21:19:43 +00:00
Dan Gohman 8d2ead2e34 Add support for lowering 128-bit shifts on ppc64.
llvm-svn: 48029
2008-03-07 20:36:53 +00:00
Evan Cheng 39a3221e27 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 780b3ca64b Update inliner to handle functions that return multiple values.
llvm-svn: 48020
2008-03-07 20:06:16 +00:00
Devang Patel 47d774b2c8 Place for sret promotion tests.
llvm-svn: 48016
2008-03-07 20:00:15 +00:00
Chris Lattner d4defb00df 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 92e52c636f Add testcase.
llvm-svn: 48005
2008-03-06 23:34:22 +00:00
Gabor Greif 636ab19205 some more spelling changes
llvm-svn: 47996
2008-03-06 10:51:21 +00:00
Evan Cheng a3cb090446 Constant fold SIGN_EXTEND_INREG with ashr not lshr.
llvm-svn: 47992
2008-03-06 08:20:51 +00:00
Nick Lewycky b2e3c31587 Exercise the new CFG change.
llvm-svn: 47990
2008-03-06 06:55:58 +00:00
Nick Lewycky 3e2d7c9f85 Commit the testcase too.
llvm-svn: 47988
2008-03-06 06:50:03 +00:00
Nick Lewycky d0b62a1552 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 e9b690b7f1 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 48072bf179 - 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 29b502e0e0 Fix a coalescer bug wrt how dead copy interval is shortened.
llvm-svn: 47966
2008-03-05 22:09:42 +00:00
Andrew Lenharth 7fbece5d8a test for something more interesting than not crashing
llvm-svn: 47962
2008-03-05 20:24:26 +00:00
Andrew Lenharth 04bd14db4d sync ops on ptrs, was breaking libgomp
llvm-svn: 47960
2008-03-05 19:48:27 +00:00
Anton Korobeynikov 6be42d2e23 Fix test not to emit junk into source directory
llvm-svn: 47947
2008-03-05 15:44:25 +00:00
Anton Korobeynikov f8e03a9b3b Testcase for PR2054
llvm-svn: 47946
2008-03-05 15:43:58 +00:00
Chris Lattner 78e9cab229 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 0a62cb44ce 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 09de8e494e Use -enable-ppc-regscavenger flag for these checks
llvm-svn: 47916
2008-03-04 23:16:26 +00:00
Devang Patel 941ab37ea8 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 841322b32a Handle multiple return values.
llvm-svn: 47904
2008-03-04 21:15:15 +00:00
Evan Cheng 16e2cf6db1 Really fix the test.
llvm-svn: 47882
2008-03-04 08:01:56 +00:00
Evan Cheng 7473c74d52 Fix broken test.
llvm-svn: 47881
2008-03-04 07:59:13 +00:00
Evan Cheng 62240d65fd Add PR1501 test case.
llvm-svn: 47874
2008-03-04 00:47:45 +00:00
Bill Wendling 632ea65072 This is the initial check-in for adding register scavenging to PPC. (Currently,
PPC-64 doesn't work.) This also lowers the spilling of the CR registers so that
it uses a register other than the default R0 register (the scavenger scrounges
for one). A significant part of this patch fixes how kill information is
handled.

llvm-svn: 47863
2008-03-03 22:19:16 +00:00
Chris Lattner be750abfd4 new testcase
llvm-svn: 47858
2008-03-03 21:59:00 +00:00
Chris Lattner a70df9e2ee Evan implemented these.
llvm-svn: 47828
2008-03-02 18:05:14 +00:00
Chris Lattner bd0bb3f07f Evan implemented this.
llvm-svn: 47827
2008-03-02 17:56:29 +00:00
Chris Lattner a8b5ed8d3a add a testcase for misc vector stuff
llvm-svn: 47826
2008-03-02 08:57:59 +00:00
Nick Lewycky 8bbec39262 Oops, can't unwind to the entry block (entry block may have no preds).
llvm-svn: 47808
2008-03-02 03:34:55 +00:00
Nick Lewycky 3cc9be0b59 Add an unwind_to field to basic blocks, making them Users instead of Values.
This is the first checkin for PR1269, the new EH infrastructure.

llvm-svn: 47802
2008-03-02 02:48:09 +00:00
Tanya Lattner 5640bd186a Remove llvm-upgrade and update test cases.
llvm-svn: 47793
2008-03-01 09:15:35 +00:00
Chris Lattner ffe0da0eb2 Fix PR2113 by verifying allocations.
llvm-svn: 47792
2008-03-01 09:01:57 +00:00
Chris Lattner 903ee68639 Fix this test.
llvm-svn: 47791
2008-03-01 09:00:21 +00:00
Tanya Lattner b7e02fc0bf Remove llvm-upgrade and update tests.
llvm-svn: 47784
2008-03-01 07:38:40 +00:00
Bill Wendling 16f1e0be3d DCE'ed this testcase.
llvm-svn: 47760
2008-02-29 19:28:11 +00:00
Bill Wendling 811153a551 If we reload a virtual register that's already been assigned, we want to mark
that instruction as its "last use". This fixes PR1925.

llvm-svn: 47758
2008-02-29 18:52:01 +00:00
Chris Lattner c966cebe93 fix a bug Anders ran into where scalarrepl would crash when promoting
a union containing a vector and an array whose elements were smaller than
the vector elements.  this means we need to compile the load of the 
array elements into an extract element plus a truncate.

llvm-svn: 47752
2008-02-29 07:12:06 +00:00
Chris Lattner c612571555 Folding or(fcmp,fcmp) only works if the operands of the fcmps are the same fp type.
llvm-svn: 47750
2008-02-29 06:09:11 +00:00
Lauro Ramos Venancio bb979f4b1c Update testcase.
llvm-svn: 47735
2008-02-28 23:13:15 +00:00
Gabor Greif f77e6977a0 Fix http://llvm.org/bugs/show_bug.cgi?id=2104 by ordering lexicographically what gets printed. Be const-correct in PrintResults and uninline it too
llvm-svn: 47712
2008-02-28 08:38:45 +00:00
Evan Cheng 507713de08 Set to default: x86 no longer fold and into test if it has more than one use.
llvm-svn: 47711
2008-02-28 07:46:38 +00:00
Dale Johannesen 820de906b1 New test for misaligned Altivec laod/store.
llvm-svn: 47698
2008-02-27 23:14:50 +00:00
Dan Gohman 26854f242e Don't hard-code the mask size to be 32, which is incorrect on ppc64
and was causing aborts with the new APInt changes. This may also be
fixing an obscure ppc64 bug.

llvm-svn: 47692
2008-02-27 21:12:32 +00:00
Evan Cheng fdc732ab9a Fix a bug in dead spill slot elimination.
llvm-svn: 47687
2008-02-27 19:57:11 +00:00
Chris Lattner 3df31ba41b actually run llc, thanks Dan :)
llvm-svn: 47677
2008-02-27 17:46:54 +00:00
Evan Cheng 8ae8e2d50b Don't track max alignment during stack object allocations since they can be deleted later. Let PEI compute it.
llvm-svn: 47668
2008-02-27 10:04:56 +00:00
Chris Lattner 83263b8cfb Make X86TargetLowering::LowerSINT_TO_FP return without creating a dead
stack slot and store if the  SINT_TO_FP is actually legal.  This allows
us to compile:

double a(double b) {return (unsigned)b;}

to:

_a:
	cvttsd2siq	%xmm0, %rax
	movl	%eax, %eax
	cvtsi2sdq	%rax, %xmm0
	ret

instead of:

_a:
	subq	$8, %rsp
	cvttsd2siq	%xmm0, %rax
	movl	%eax, %eax
	cvtsi2sdq	%rax, %xmm0
	addq	$8, %rsp
	ret

crazy.

llvm-svn: 47660
2008-02-27 05:57:41 +00:00
Chris Lattner 3c7d3d5700 Compile x86-64-and-mask.ll into:
_test:
	movl	%edi, %eax
	ret

instead of:

_test:
        movl    $4294967295, %ecx
        movq    %rdi, %rax
        andq    %rcx, %rax
        ret

It would be great to write this as a Pat pattern that used subregs 
instead of a 'pseudo' instruction, but I don't know how to do that
in td files.

llvm-svn: 47658
2008-02-27 05:47:54 +00:00
Evan Cheng 6d56368caf Spiller now remove unused spill slots.
llvm-svn: 47657
2008-02-27 03:04:06 +00:00
Bill Wendling 30075852ef Upgrade testcase.
llvm-svn: 47644
2008-02-26 23:22:40 +00:00
Owen Anderson e41c19c987 Add PR number to testcase.
llvm-svn: 47640
2008-02-26 23:16:11 +00:00
Owen Anderson d29ed0b122 Fix an issue where GVN had the sizes of the two memcpy's reverse, resulting
in an invalid transformation.

llvm-svn: 47639
2008-02-26 23:06:17 +00:00
Evan Cheng fa6b366892 Enable -coalescer-commute-instrs by default.
llvm-svn: 47623
2008-02-26 20:40:22 +00:00
Dan Gohman 9db0aa86d9 Avoid aborting on invalid shift counts.
llvm-svn: 47612
2008-02-26 18:50:50 +00:00
Eli Friedman 666bbe34f4 Fix for pr2093: direct operands aren't necessarily addresses, so don't
try to simplify them.

llvm-svn: 47610
2008-02-26 18:37:49 +00:00
Chris Lattner a39cff3aaa fix this test so that the fn name doesn't match the regex
llvm-svn: 47608
2008-02-26 18:13:51 +00:00
Chris Lattner 07c83cc86e Fix PR2096, a regression introduced with my patch last night. This
also fixes cfrac, flops, and 175.vpr

llvm-svn: 47605
2008-02-26 17:09:59 +00:00
Gabor Greif 3d9755f6ca Really feed llvm-as with the testcase, do not let it read from stdin. This fixes the hangs seen on solaris10.
llvm-svn: 47604
2008-02-26 13:37:13 +00:00
Gabor Greif 0a43601153 unbreak check-one
by supplying a dummy
"verbose" procedure

llvm-svn: 47603
2008-02-26 13:27:49 +00:00
Gabor Greif d5691031f5 While hunting for two hanging tests,
(on solaris10, which are:
  CodeGen/PowerPC/frounds.ll
  Transforms/InstCombine/2008-02-23-MulSub.ll)

I needed a tool to figure out which one is the guilty.

To this end I have added a verbosity
option to the test/Makefile.

It can be invoked thus:

gmake check TESTSUITE=CodeGen/PowerPC VERBOSE="-v -v"

(The number of "-v"s specifies the verbosity level.
 Instead of "-v" other aliases can be specified,
 please consult the dejagnu docs for info.)

At level >= 2 following line is logged for each
test, before running it:

ABOUT TO RUN: <test>.ll

llvm-svn: 47602
2008-02-26 12:08:55 +00:00
Evan Cheng 2ff0b0e681 This is possible:
vr1 = extract_subreg vr2, 3
...
vr3 = extract_subreg vr1, 2
The end result is vr3 is equal to vr2 with subidx 2.

llvm-svn: 47592
2008-02-26 08:03:41 +00:00
Chris Lattner e7c14013f5 Fix isNegatibleForFree to not return true for ConstantFP nodes
after legalize.  Just because a constant is legal (e.g. 0.0 in SSE) 
doesn't mean that its negated value is legal (-0.0).  We could make
this stronger by checking to see if the negated constant is actually
legal post negation, but it doesn't seem like a big deal.

llvm-svn: 47591
2008-02-26 07:04:54 +00:00
Evan Cheng 1da250097b Fix PR2076. CodeGenPrepare now sinks address computation for inline asm memory
operands into inline asm block.

llvm-svn: 47589
2008-02-26 02:42:37 +00:00
Devang Patel bbfd874cb4 Update bitcode reader and writer to handle multiple return values.
Take 2.

llvm-svn: 47583
2008-02-26 01:29:32 +00:00
Owen Anderson df1d2b02f9 Fix an issue where GVN was performing the return slot optimization when it was
not safe.  This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.

llvm-svn: 47544
2008-02-25 04:08:09 +00:00
Evan Cheng 01d6257e81 Temporarily reverting 46959.
llvm-svn: 47542
2008-02-25 03:57:32 +00:00
Owen Anderson 40dca46ddb Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization.
llvm-svn: 47541
2008-02-25 00:40:41 +00:00
Evan Cheng 2f18c39720 Backing out r47521 for now. This has broken a number of tests.
llvm-svn: 47533
2008-02-23 19:32:32 +00:00
Scott Michel 7d5eaec6dd Merge current work back to tree to minimize diffs and drift. Major highlights
for CellSPU modifications:

- SPUInstrInfo.td refactoring: "multiclass" really is _your_ friend.
- Other improvements based on refactoring effort in SPUISelLowering.cpp,
  esp. in SPUISelLowering::PerformDAGCombine(), where zero amount shifts and
  rotates are now eliminiated, other scalar-to-vector-to-scalar silliness
  is also eliminated.
- 64-bit operations are being implemented, _muldi3.c gcc runtime now
  compiles and generates the right code. More work still needs to be done.

llvm-svn: 47532
2008-02-23 18:41:37 +00:00
Zhou Sheng aae582ba99 Testcase for Revision 47478.
llvm-svn: 47531
2008-02-23 10:59:51 +00:00
Evan Cheng 504c645b3e Rematerialization logic was overly conservative when it comes to loads from fixed stack slots.
llvm-svn: 47529
2008-02-23 03:38:34 +00:00
Evan Cheng 405827dc26 Update test.
llvm-svn: 47527
2008-02-23 02:57:25 +00:00
Evan Cheng 174ef9a0bb Remat of pic loads are now on by default.
llvm-svn: 47525
2008-02-23 02:08:30 +00:00
Dan Gohman 63d2d1f554 Fix a bug that caused opt and other tools to silently ignore
invalid command-line options.

llvm-svn: 47523
2008-02-23 01:55:25 +00:00
Devang Patel 6a49782d33 Properly read and write bitcodes for multiple return values.
llvm-svn: 47521
2008-02-23 01:44:55 +00:00
Evan Cheng 26e5d01ca1 Really. Why doesn't every arch support MMX?
llvm-svn: 47513
2008-02-23 00:56:14 +00:00
Evan Cheng cee351c410 Test case for PR2082.
llvm-svn: 47501
2008-02-22 20:38:49 +00:00
Evan Cheng 94ba37f8e3 Allow re-materialization of pic load (controlled by -remat-pic-load for now).
llvm-svn: 47476
2008-02-22 09:25:47 +00:00
Chris Lattner ab8bfc28c8 copy mmx values from/to memory with GPRs on x86-32
instead of with mmx registers.  This horribleness is apparently
done by gcc to avoid having to insert emms in places that really 
should have it.  This is the second half of rdar://5741668.

llvm-svn: 47474
2008-02-22 05:18:04 +00:00
Chris Lattner 997b3a65ca Start using GPR's to copy around mmx value instead of mmx regs.
GCC apparently does this, and code depends on not having to do
emms when this happens.  This is x86-64 only so far, second half
should handle x86-32.

rdar://5741668

llvm-svn: 47470
2008-02-22 02:09:43 +00:00
Chris Lattner bdd4c8b04d Treat clobber operands like early clobbers: if we have
any, we force sdisel to do all regalloc for an asm.  This
leads to gross but correct codegen.

This fixes the rest of PR2078.

llvm-svn: 47454
2008-02-21 19:43:13 +00:00
Tanya Lattner 3cdf542f5a Remove llvm-upgrade and update tests.
llvm-svn: 47432
2008-02-21 07:42:26 +00:00
Chris Lattner 59f18b4de6 testcase for PR1133
llvm-svn: 47427
2008-02-21 05:27:08 +00:00
Chris Lattner 83c93d5afd Fix a (harmless) but where vregs were added to the used reg lists for
inline asms.

Fix PR2078 by marking aliases of registers used when a register is 
marked used.  This prevents EAX from being allocated when AX is listed
in the clobber set for the asm.

llvm-svn: 47426
2008-02-21 04:55:52 +00:00
Devang Patel ad582fc34b Let invoke return aggregate value.
llvm-svn: 47425
2008-02-21 02:14:01 +00:00
Devang Patel 1f00b535e1 Let function call return aggregate.
Now, we have very first multiple return value testcase!

llvm-svn: 47424
2008-02-21 01:54:02 +00:00
Devang Patel fe988eba4b XFAIL for now.
llvm-svn: 47411
2008-02-20 23:10:42 +00:00
Devang Patel b2aa6fe905 Now functions can return aggregate values.
llvm-svn: 47409
2008-02-20 22:51:28 +00:00
Nick Lewycky 1c44ebcf86 Add 'umax' similar to 'smax' SCEV. Closes PR2003.
Parse reversed smax and umax as smin and umin and express them with negative
or binary-not SCEVs (which are really just subtract under the hood).

Parse 'xor %x, -1' as (-1 - %x).

Remove dead code (ConstantInt::get always returns a ConstantInt).

Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets
passed into a uint64_t. Instead, create the -1 directly from
ConstantInt::getAllOnesValue().

llvm-svn: 47360
2008-02-20 06:48:22 +00:00
Evan Cheng 0aa9f2a7f3 XFAIL this for now.
llvm-svn: 47355
2008-02-20 02:38:58 +00:00
Chris Lattner a0b1cc41ef this test requires sse2
llvm-svn: 47331
2008-02-19 18:07:46 +00:00
Chris Lattner 97b9662f78 Don't fold and's into test instructions if they have multiple uses.
This compiles test-nofold.ll into:

_test:
	movl	$15, %ecx
	andl	4(%esp), %ecx
	testl	%ecx, %ecx
	movl	$42, %eax
	cmove	%ecx, %eax
	ret

instead of:
_test:
	movl	4(%esp), %eax
	movl	%eax, %ecx
	andl	$15, %ecx
	testl	$15, %eax
	movl	$42, %eax
	cmove	%ecx, %eax
	ret

llvm-svn: 47330
2008-02-19 17:37:35 +00:00
Chris Lattner 08162d9515 rename tests to avoid a test- prefix when they aren't related to the test instruction.
llvm-svn: 47329
2008-02-19 17:33:52 +00:00
Tanya Lattner a99d8b5a9a Remove llvm-upgrade and update tests.
llvm-svn: 47325
2008-02-19 08:07:33 +00:00
Chris Lattner a00c808d40 dead pass
llvm-svn: 47324
2008-02-19 07:58:11 +00:00
Chris Lattner 95816b9dee Fix PR2060 by rejecting invalid types for integer constants.
llvm-svn: 47311
2008-02-19 04:36:07 +00:00
Nick Lewycky 0e2e21b8b9 Don't spew stats to stderr.
llvm-svn: 47308
2008-02-19 03:11:47 +00:00
Nick Lewycky b54a803a2e Fix up the run line for this new test.
llc: for the -info-output-file option:  requires a value!

llvm-svn: 47306
2008-02-19 02:58:36 +00:00
Evan Cheng 634a8f9275 New test.
llvm-svn: 47302
2008-02-19 02:09:58 +00:00
Tanya Lattner e1d2df0738 Remove llvm-upgrade and update tests.
llvm-svn: 47297
2008-02-19 01:44:26 +00:00
Tanya Lattner 3f04773f78 Remove llvm-upgrade and update tests.
llvm-svn: 47296
2008-02-19 01:41:04 +00:00
Evan Cheng 6200c225e0 - When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type.
- X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC.

llvm-svn: 47290
2008-02-18 23:04:32 +00:00
Nick Lewycky fefd0202c9 Correctly fold divide-by-constant, even when faced with overflow.
llvm-svn: 47287
2008-02-18 22:48:05 +00:00
Dan Gohman a589ee11bb Don't mark scalar integer multiplication as Expand on x86, since x86
has plain one-result scalar integer multiplication instructions.
This avoids expanding such instructions into MUL_LOHI sequences that
must be special-cased at isel time, and avoids the problem with that
code that provented memory operands from being folded.

This fixes PR1874, addressesing the most common case. The uncommon
cases of optimizing multiply-high operations will require work
in DAGCombiner.

llvm-svn: 47277
2008-02-18 17:55:26 +00:00
Chris Lattner 23fe6630e3 make this just a bit more strict.
llvm-svn: 47274
2008-02-18 17:33:10 +00:00
Owen Anderson 3549553262 Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls
another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value.  llvm-gcc does not emit this by default.  Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter.  This optimization detects
and optimizes that case.

llvm-svn: 47265
2008-02-18 09:24:53 +00:00
Chris Lattner 024f8c8f09 optimize away stackrestore calls that have no intervening alloca or call.
llvm-svn: 47258
2008-02-18 06:12:38 +00:00
Chris Lattner c8ec470b52 upgrade this test.
llvm-svn: 47257
2008-02-18 06:11:00 +00:00
Chris Lattner cc22601bc3 Fold (-x + -y) -> -(x+y) which promotes better association, fixing
the second half of PR2047

llvm-svn: 47244
2008-02-17 21:03:36 +00:00
Chris Lattner a70d138457 Split up subtracts into add+negate if they have a reassociable use or operand
that is also a subtract.  This implements PR2047 and Transforms/Reassociate/subtest2.ll 

llvm-svn: 47241
2008-02-17 20:51:26 +00:00
Chris Lattner 2de8c2d41f upgrade and simplify this test.
llvm-svn: 47240
2008-02-17 20:48:43 +00:00
Tanya Lattner f697c03883 Remove llvm-upgrade.
llvm-svn: 47238
2008-02-17 20:02:20 +00:00