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42662 Commits

Author SHA1 Message Date
Jim Grosbach
4ca61d9877 ARM encoding information for CLREX, SWP and SWPB. Add comment for sjlj pseudos and a FIXME for TLS. 
llvm-svn: 117702
 2010-10-29 20:21:36 +00:00
Dan Gohman
85557399a1 Make ScalarEvolution::forgetLoop forget all contained loops too, because 
they may have ValuesAtScopes map entries referencing their outer loops.
This fixes a user-after-free reported in PR8471.

llvm-svn: 117698
 2010-10-29 20:16:10 +00:00
Jim Grosbach
162e3345fb ARM mode LDREX*/STREX* binary encodings. 
llvm-svn: 117695
 2010-10-29 19:58:57 +00:00
Jim Grosbach
5bc94b46a9 Encoding information for ARM conditional move instructions. 
llvm-svn: 117687
 2010-10-29 19:28:17 +00:00
Jakob Stoklund Olesen
469a9ef414 Fix sign error. 
llvm-svn: 117677
 2010-10-29 18:21:18 +00:00
Evan Cheng
392d2cbdcc Avoiding overly aggressive latency scheduling. If the two nodes share an 
operand and one of them has a single use that is a live out copy, favor the
one that is live out. Otherwise it will be difficult to eliminate the copy
if the instruction is a loop induction variable update. e.g.

BB:
sub r1, r3, #1
str r0, [r2, r3]
mov r3, r1
cmp
bne BB

=>

BB:
str r0, [r2, r3]
sub r3, r3, #1
cmp
bne BB

This fixed the recent 256.bzip2 regression.

llvm-svn: 117675
 2010-10-29 18:09:28 +00:00
Evan Cheng
92293993bd - Don't schedule nodes with only MVT::Flag and MVT::Other values for latency. 
- Compute CopyToReg use operand latency correctly.

llvm-svn: 117674
 2010-10-29 18:07:31 +00:00
Jakob Stoklund Olesen
1f2fb9a020 Don't transfer unused values to the new intervals formed by splitting. 
llvm-svn: 117673
 2010-10-29 17:47:49 +00:00
Jim Grosbach
edec5cc6b8 Handle ARM addrmode5 instructions with an offset. 
llvm-svn: 117672
 2010-10-29 17:41:25 +00:00
Benjamin Kramer
d84e7a7b91 Silence Release build warnings. 
llvm-svn: 117671
 2010-10-29 17:40:05 +00:00
Jakob Stoklund Olesen
d56c4457a6 Teach ConnectedVNInfoEqClasses::Classify to deal with unused values. 
We don't want unused values forming their own equivalence classes, so we lump
them all together in one class, and then merge them with the class of the last
used value.

llvm-svn: 117670
 2010-10-29 17:37:29 +00:00
Jakob Stoklund Olesen
e577489ba5 Never propagate the idom value out of a block that defines its own value. 
llvm-svn: 117669
 2010-10-29 17:37:25 +00:00
John Thompson
6115a7f1d4 Inline asm multiple alternative constraints development phase 2 - improved basic logic, added initial platform support. 
llvm-svn: 117667
 2010-10-29 17:29:13 +00:00
Dan Gohman
85403d8246 Check if ErrMsg is null. This fixes the "not" command. 
llvm-svn: 117666
 2010-10-29 17:20:42 +00:00
Dan Gohman
6a889e86df Fix these error messages to be less confusing. These error 
messages primarily indicate errors running the viewer, not
errors with the graph file itself.

llvm-svn: 117665
 2010-10-29 17:03:40 +00:00
Dan Gohman
b27988e5bd Make Program::Wait differentiate execution failure due to the file 
being not found from the file being not executable. 

llvm-svn: 117664
 2010-10-29 16:54:25 +00:00
Jim Grosbach
6f257bd31b Revert 117660. Apparently it's not as trivial as that... 
llvm-svn: 117663
 2010-10-29 16:50:53 +00:00
Dan Gohman
a80b1afde3 Make Program::Wait provide an error message string for errors 
executing the child process and abnormal child process termination.

llvm-svn: 117661
 2010-10-29 16:39:01 +00:00
Jim Grosbach
8c9a2ee86e ARM addrmode5 instructions have neither writeback nor post-indexed modes. 
llvm-svn: 117660
 2010-10-29 16:38:59 +00:00
Jim Grosbach
29961ebfc5 Trailing whitespace. 
llvm-svn: 117651
 2010-10-29 14:46:02 +00:00
Benjamin Kramer
f2442da5f6 ARMAsmParser: Plug a memory leak. 
llvm-svn: 117648
 2010-10-29 09:43:39 +00:00
Eric Christopher
930a767468 Add an unreachable to silence warning - the switch is actually 
fully enumerated.

llvm-svn: 117647
 2010-10-29 09:26:59 +00:00
Bill Wendling
d9412db2c8 This may be an ARM target, so check for _Unwind_SjLj_Resume. 
llvm-svn: 117643
 2010-10-29 07:46:01 +00:00
Dan Gohman
753c9ce807 Teach memdep to use pointsToConstantMemory to determine that loads 
from constant memory don't alias any stores.

llvm-svn: 117636
 2010-10-29 01:14:04 +00:00
Jakob Stoklund Olesen
b7a4b7a7b0 Fix broken equivalence class calculation. We could probably also use 
EquvivalenceClasses.h except it looks like overkill when elements are continuous
integers.

llvm-svn: 117631
 2010-10-29 00:40:59 +00:00
Jakob Stoklund Olesen
1210a5145a Print out the connected components in the verifier after complaining about their 
multiplicity.

llvm-svn: 117630
 2010-10-29 00:40:57 +00:00
Jakob Stoklund Olesen
e446520687 Run a verification pass before any splitting to better distribute blame. 
llvm-svn: 117629
 2010-10-29 00:40:55 +00:00
Chris Lattner
115cd02d22 add simple support for addrmode5 operands, allowing 
vldr.64 to work.  I have no idea if this is fully right, but 
it is in the right direction.

llvm-svn: 117626
 2010-10-29 00:27:31 +00:00
Devang Patel
bf9c3c8947 Ignore empty blocks. 
llvm-svn: 117615
 2010-10-28 22:11:59 +00:00
Chris Lattner
ef237e6013 give better error diagnostics, for example: 
t.s:1:14: error: invalid operand for instruction
vldr.64	d17, [r0]   
       	     ^

instead of:

t.s:1:1: error: unrecognized instruction
vldr.64	d17, [r0]   
^

llvm-svn: 117611
 2010-10-28 21:41:58 +00:00
Chris Lattner
ba1e908431 hook up getOpcodeName for ARM so that "llc -show-mc-inst" includes 
the opcode string in the inst dump, e.g.:
	vmov	r2, r3, d17             @ encoding: [0x31,0x2b,0x53,0xec]
                                        @ <MCInst #989 VMOVRRD
                                        @  <MCOperand Reg:68>
                                        @  <MCOperand Reg:69>
                                        @  <MCOperand Reg:19>
                                        @  <MCOperand Imm:14>
                                        @  <MCOperand Reg:0>>

The "VMOVRRD" is new.

llvm-svn: 117609
 2010-10-28 21:37:33 +00:00
Rafael Espindola
913ce7ebc8 Improvements to .section parsing: 
* If we have a M or a G, reject sections without the type
* Only parse the flag specific arguments if we have M or G
* Parse the corresponding arguments for M and G

We ignore the G arguments and flag for now.

llvm-svn: 117608
 2010-10-28 21:33:33 +00:00
Chris Lattner
4210ffb9c5 move a method out of line. 
llvm-svn: 117605
 2010-10-28 21:28:01 +00:00
Chris Lattner
b6c7a9e204 remove the rest of hte owningptr's, no functionality change. 
llvm-svn: 117603
 2010-10-28 20:52:15 +00:00
Jakob Stoklund Olesen
c570151dc2 One day, physical register live ranges will be sensible. 
llvm-svn: 117602
 2010-10-28 20:44:22 +00:00
Jakob Stoklund Olesen
ccbfbefd93 Replace SplitKit SSA update with an iterative algorithm very similar to the one 
in SSAUpdaterImpl.h

Verifying live intervals revealed that the old method was completely wrong, and
we need an iterative approach to calculating PHI placemant. Fortunately, we have
MachineDominators available, so we don't have to compute that over and over
like SSAUpdaterImpl.h must.

Live-out values are cached between calls to mapValue() and computed in a greedy
way, so most calls will be working with very small block sets.

Thanks to Bob for explaining how this should work.

llvm-svn: 117599
 2010-10-28 20:34:52 +00:00
Jakob Stoklund Olesen
6f4262448e Make MachineDominators available for SplitEditor. We are going to need it for 
proper SSA updating.

This doesn't cause MachineDominators to be recomputed since we are already
requiring MachineLoopInfo which uses dominators as well.

llvm-svn: 117598
 2010-10-28 20:34:50 +00:00
Jakob Stoklund Olesen
35f9c58245 Add a temporary command line option to verify machine code after each spill or 
split.

llvm-svn: 117597
 2010-10-28 20:34:47 +00:00
Dan Gohman
d512ed689c Revert r117582, which reverted r77396. Searching PATH for a string 
which contains slashes is inconsistent with the meaning of PATH on
Unix-type platforms, and pretty surprising.

If the user has given a specific path to execute and we can't
execute it, we should fail and say why.  (Apparently the new
posix_spawn code doesn't always say why, but that's a separate
issue.)

llvm-svn: 117596
 2010-10-28 20:34:33 +00:00
Rafael Espindola
b562975139 Add support for the .string directive. 
llvm-svn: 117592
 2010-10-28 20:02:27 +00:00
Devang Patel
a496603faf Do not work too hard to find type's file info. There is a special field to record file info. 
llvm-svn: 117588
 2010-10-28 19:50:08 +00:00
Rafael Espindola
f230319275 Defined weak symbols should have non-zero value. 
llvm-svn: 117585
 2010-10-28 19:39:57 +00:00
Mikhail Glushenkov
8988adb7db llvmc: Make ExecuteProgram() look in the driver directory first. 
llvm-svn: 117584
 2010-10-28 19:33:08 +00:00
Mikhail Glushenkov
7ee0f678cb Remove an unnecessary check and an unnecessary temporary. 
llvm-svn: 117583
 2010-10-28 19:33:04 +00:00
Mikhail Glushenkov
b727c53cff Revert r77396. 
Original commit message:

    On "Unix", if Program::FindProgramByName is given a name containing
    slashes, just go with it, regardless of whether it looks like it will
    be executable. This follows the behavior of sh(1) more closely.

It's better when behaviour is consistent between platforms. This change also
makes FindExecutable() behave as expected on unix-likes (before this commit, it
used to always succeed).

llvm-svn: 117582
 2010-10-28 19:32:58 +00:00
Mikhail Glushenkov
e2c628c84f Trailing whitespace. 
llvm-svn: 117581
 2010-10-28 19:32:53 +00:00
Rafael Espindola
862d688cbd Fix relocations with renamed symbols. 
llvm-svn: 117575
 2010-10-28 19:08:03 +00:00
Benjamin Kramer
fbfb8cf5f8 Reduce malloc thrashing. 
llvm-svn: 117572
 2010-10-28 18:41:23 +00:00
Jim Grosbach
d02c1c7d77 PLD, PLDW, PLI encodings, plus refactor their use of addrmode2. 
llvm-svn: 117571
 2010-10-28 18:34:10 +00:00
Rafael Espindola
e62cf892ae Aliases defined with .symver should copy the binding of the symbols they alias. 
Move the existing patching for undefined symbols so that all the patching
is done in the same function.

llvm-svn: 117570
 2010-10-28 18:33:03 +00:00