Commit Graph

6169 Commits

Author SHA1 Message Date
Duncan Sands
338cd6ba6e When calculating 'nocapture' argument attributes, allow
the argument to be stored to an alloca by tracking uses
of the alloca.  This occurs 4 times (out of 7121, 0.05%)
in MultiSource/Applications, so may not be worth it.  On
the other hand, it is easy to do and fairly cheap.  The
functions it helps are: W_addcom and W_addlit in spiff;
process_args (argv) in d (make_dparser); ercPixConcealIMB
in JM/ldecod.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61570 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 11:54:37 +00:00
Chris Lattner
df98617b23 Reimplement the old and horrible bison parser for .ll files with a nice
and clean recursive descent parser.

This change has a couple of ramifications:
1. The parser code is about 400 lines shorter (in what we maintain, not
   including what is autogenerated).
2. The code should be significantly faster than the old code because we 
   don't have to work around bison's poor handling of datatypes with 
   ctors/dtors.  This also makes the code much more resistant to memory 
   leaks.
3. We now get caret diagnostics from the .ll parser, woo.
4. The actual diagnostics emited from the parser are completely different
   so a bunch of testcases had to be updated.
5. I now disallow "%ty = type opaque %ty = type i32".  There was no good
   reason to support this, it was just an accident of the old 
   implementation.  I have no reason to think that anyone is actually using
   this.
6. The syntax for sticking a global variable has changed to make it 
   unambiguous.  I don't think anyone is depending on this since only clang
   supports this and it is not solid yet, so I'm not worried about anything
   breaking.
7. This gets rid of the last use of bison, and along with it the .cvs files.
   I'll prune this from the makefiles as a subsequent commit.

There are a few minor cleanups that can be done after this commit (suggestions
welcome!) but this passes dejagnu testing and is ready for its time in the
limelight.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61558 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 07:01:27 +00:00
Evan Cheng
ccb6976a69 Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61557 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 05:35:45 +00:00
Evan Cheng
52ceafa5c7 Use movaps / movd to extract vector element 0 even with sse4.1. It's still cheaper than pextrw especially if the value is in memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61555 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 05:29:08 +00:00
Nick Lewycky
8439653dfc Remove the cyclic part of this test, it was passing for the wrong
reason. Two functions which mutually require each other to be nocapture 
are not currently supported.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61553 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 03:52:27 +00:00
Nick Lewycky
6b05686283 Make adding nocapture a bit stronger. FreeInst is nocapture. Also,
functions that don't write can't leak a pointer except through 
the return value, so a void readonly function is implicitly nocapture.

Test these, and add a test that verifies that f1 calling f2 with an 
otherwise dead pointer gets both of them marked nocapture.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61552 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 03:46:56 +00:00
Chris Lattner
aca3e68dd8 rename a file to follow naming conventions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61550 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 01:52:35 +00:00
Duncan Sands
29ab02b2c2 Add tests for two types of traps that escape analysis
might one day fall into.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61549 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 00:55:51 +00:00
Misha Brukman
33d0a03478 * Quoted the executable 'runtest' to emphasize the binary needed;
otherwise, some unlucky souls start looking for a 'dejagnu' binary...
* Properly capitalized LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61546 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-01 20:26:05 +00:00
Duncan Sands
5480c0469e Fix PR3274: when promoting the condition of a BRCOND node,
promote from i1 all the way up to the canonical SetCC type.
In order to discover an appropriate type to use, pass
MVT::Other to getSetCCResultType.  In order to be able to
do this, change getSetCCResultType to take a type as an
argument, not a value (this is also more logical).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61542 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-01 15:52:00 +00:00
Bill Wendling
3479be91c4 Add transformation:
xor (or (icmp, icmp), true) -> and(icmp, icmp)

This is possible because of De Morgan's law.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-01 01:18:23 +00:00
Duncan Sands
1010941954 Look through phi nodes and select instructions when
calculating nocapture attributes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61535 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-31 20:21:34 +00:00
Bill Wendling
587cbd0058 This is not failing on Darwin for some reason. XFAIL for other platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61533 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-31 19:26:09 +00:00
Misha Brukman
5eb009af67 Removed extra spaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61527 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-31 17:38:27 +00:00
Duncan Sands
9e89ba31f1 Rename AddReadAttrs to FunctionAttrs, and teach it how
to work out (in a very simplistic way) which function
arguments (pointer arguments only) are only dereferenced
and so do not escape.  Mark such arguments 'nocapture'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61525 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-31 16:14:43 +00:00
Bill Wendling
67b9a2abc4 XFAIL test caused by r61493. Apparently, this is expected?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61516 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-31 08:26:55 +00:00
Scott Michel
477dc85052 XFAIL this for now until I can figure out what's going on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61512 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-31 00:08:25 +00:00
Scott Michel
87142b1b0a Fix test erratum (which is wierd: works locally for me?)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61511 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-30 23:52:05 +00:00
Scott Michel
02d711b93e - Start moving target-dependent nodes that could be represented by an
instruction sequence and cannot ordinarily be simplified by DAGcombine
  into the various target description files or SPUDAGToDAGISel.cpp.

  This makes some 64-bit operations legal.

- Eliminate target-dependent ISD enums.

- Update tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61508 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-30 23:28:25 +00:00
Duncan Sands
516ec62bfe Allow readnone functions to read (and write!) global
constants, since doing so is irrelevant for aliasing
purposes.  While this doesn't increase the total number
of functions marked readonly or readnone in MultiSource/
Applications (3089), it does result in 12 functions being
marked readnone rather than readonly.
Before:
  readnone: 820
  readonly: 2269
After:
  readnone: 832
  readonly: 2257


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61469 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-29 11:34:09 +00:00
Nick Lewycky
3037eda1ef Check that the function prototypes are correct before assuming that the
parameters are pointers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61451 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-27 16:20:53 +00:00
Chris Lattner
7c3f161569 add testcase for type parsing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61449 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-27 08:10:46 +00:00
Scott Michel
f0569be4a9 - Remove Tilmann's custom truncate lowering: it completely hosed over
DAGcombine's ability to find reasons to remove truncates when they were not
  needed. Consequently, the CellSPU backend would produce correct, but _really
  slow and horrible_, code.

  Replaced with instruction sequences that do the equivalent truncation in
  SPUInstrInfo.td.

- Re-examine how unaligned loads and stores work. Generated unaligned
  load code has been tested on the CellSPU hardware; see the i32operations.c
  and i64operations.c in CodeGen/CellSPU/useful-harnesses.  (While they may be
  toy test code, it does prove that some real world code does compile
  correctly.)

- Fix truncating stores in bug 3193 (note: unpack_df.ll will still make llc
  fault because i64 ult is not yet implemented.)

- Added i64 eq and neq for setcc and select/setcc; started new instruction
  information file for them in SPU64InstrInfo.td. Additional i64 operations
  should be added to this file and not to SPUInstrInfo.td.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61447 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-27 04:51:36 +00:00
Chris Lattner
1323e8bf6a add PR #
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61427 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-25 05:40:38 +00:00
Chris Lattner
e55484eb45 Add a simple pattern for matching 'bt'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61426 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-25 05:34:37 +00:00
Bill Wendling
e5b7e0ec08 Revert the changes in this testcase until Anton can fix them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61414 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-24 05:23:34 +00:00
Dan Gohman
82779704ff Fix a compiler-abort on a testcase where the stack-pointer is added to
a symbolic constant. This is unlikely to be intentional, but it
shouldn't crash the compiler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61408 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-24 00:27:51 +00:00
Dale Johannesen
f9cbc1f9ac Add another permutation where we should get rid of a-a.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61401 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23 23:01:27 +00:00
Anton Korobeynikov
42a8bbce2c Update test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61399 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23 22:26:37 +00:00
Chris Lattner
2e24342570 Testcase to show we can tie together integers and pointers of
the same size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61380 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23 18:52:26 +00:00
Mon P Wang
2fe269def2 Added shuffle and splat test cases for r61365.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61366 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23 04:05:08 +00:00
Dale Johannesen
58e39b0200 One more permutation of subtracting off a base value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61361 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23 01:59:54 +00:00
Mikhail Glushenkov
a01ce0091a Use ignore & grep instead of XFAIL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61307 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-21 07:47:49 +00:00
Nick Lewycky
13a09e298c Turn strcmp into memcmp, such as strcmp(P, "x") --> memcmp(P, "x", 2).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61297 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-21 00:19:21 +00:00
Dan Gohman
b12b1a27f5 Fix fast-isel to not emit invalid assembly when presented with a
constant shift count that doesn't fit in the shift instruction's
immediate field. This fixes PR3242.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61281 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-20 17:19:40 +00:00
Dan Gohman
f89e6e6577 Use the correct Preds and Succs lists in setHeightDirty()
and setDepthDirty(), respectively. This fixes PR3241.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61276 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-20 16:34:57 +00:00
Bill Wendling
b8fd41985f More precise XFAIL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61265 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 22:28:23 +00:00
Bill Wendling
c6acb579f9 Un-XFAIL this test because it's passing and John doesn't seem interested in un-XFAILing it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 22:25:01 +00:00
Evan Cheng
5379f412bc Fix PR3149. If an early clobber def is a physical register and it is tied to an input operand, it effectively extends the live range of the physical register. Currently we do not have a good way to represent this.
172     %ECX<def> = MOV32rr %reg1039<kill>
180     INLINEASM <es:subl $5,$1
        sbbl $3,$0>, 10, %EAX<def>, 14, %ECX<earlyclobber,def>, 9, %EAX<kill>,
36, <fi#0>, 1, %reg0, 0, 9, %ECX<kill>, 36, <fi#1>, 1, %reg0, 0
188     %EAX<def> = MOV32rr %EAX<kill>
196     %ECX<def> = MOV32rr %ECX<kill>
204     %ECX<def> = MOV32rr %ECX<kill>
212     %EAX<def> = MOV32rr %EAX<kill>
220     %EAX<def> = MOV32rr %EAX
228     %reg1039<def> = MOV32rr %ECX<kill>

The early clobber operand ties ECX input to the ECX def.

The live interval of ECX is represented as this:
%reg20,inf = [46,47:1)[174,230:0)  0@174-(230) 1@46-(47)

The right way to represent this is something like
%reg20,inf = [46,47:2)[174,182:1)[181:230:0)  0@174-(182) 1@181-230 @2@46-(47)

Of course that won't work since that means overlapping live ranges defined by two val#.

The workaround for now is to add a bit to val# which says the val# is redefined by a early clobber def somewhere. This prevents the move at 228 from being optimized away by SimpleRegisterCoalescing::AdjustCopiesBackFrom.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61259 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 20:58:01 +00:00
Bill Wendling
94920c123a This test works again for Darwin because a patch was reverted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61254 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 19:08:13 +00:00
Evan Cheng
ab63152871 - CodeGenPrepare does not split loop back edges but it only knows about back edges of single block loops. It now does a DFS walk to find loop back edges.
- Use SplitBlockPredecessors to factor out common predecessors of the critical edge destination. This is disabled for now due to some regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61248 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 18:03:11 +00:00
Rafael Espindola
2f6fea90a5 Fix bug 3202.
The EH_frame and .eh symbols are now private, except for darwin9 and earlier.
The patch also fixes the definition of PrivateGlobalPrefix on pcc linux.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61242 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 10:55:56 +00:00
Nick Lewycky
f23d0d392a Resubmit support for the 'nocapture' attribute.
The problematic part of this patch is that we were out of attribute bits,
requiring some fancy bit hacking to make it fit (by shrinking alignment)
without breaking existing users or the file format.

This change will require users to rebuild llvm-gcc to match llvm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61239 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19 06:39:12 +00:00
Mon P Wang
7538454f9f Fix test to account for generating some vector code for mul v2i64 instead
of incorrectly generating pmuldq


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61228 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 23:42:37 +00:00
Bill Wendling
82c19ae10a Re-XFAIL this test until debug stuff settles down.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61219 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 22:13:31 +00:00
Mon P Wang
1d045486ca Added some basic test cases for r61209
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61210 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 20:05:58 +00:00
Nick Lewycky
2a8f6597a3 Make all the vector elements positive in an srem of constant vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61195 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 06:31:11 +00:00
Bill Wendling
a5d5c0268a XFAIL on Linux.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61176 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 00:35:21 +00:00
Bill Wendling
10ef02e2c8 Do not XFAIL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61174 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 00:27:15 +00:00
Devang Patel
3ac619e94f XFAIL for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61167 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-17 22:54:54 +00:00