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Author SHA1 Message Date
Dan Gohman
91203cf87b When checking whether a def of an aliased register is dead, ask the 
machineinstr whether the aliased register is dead, rather than the original
register is dead. This allows it to get the correct answer when examining
an instruction like this:
  CALLpcrel32 <ga:foo>, %AL<imp-def>, %EAX<imp-def,dead>
where EAX is dead but a subregister of it is still live. This fixes PR5294.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85135 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 18:26:18 +00:00
Sanjiv Gupta
be9e763697 Make PIC16 overlay a loadable pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85134 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 18:22:59 +00:00
Devang Patel
5a1033a8ed Do not use expensive sort(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85130 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 17:09:00 +00:00
David Goodwin
2e7be612d5 Break anti-dependence breaking out into its own class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85127 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 16:59:04 +00:00
Devang Patel
ac16d44e58 Add support to encode type info using llvm::Constant. 
Patch by Talin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85126 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 16:54:35 +00:00
Dan Gohman
440e251c75 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85120 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 15:55:24 +00:00
Chris Lattner
48b59ec817 reapply r85085 with a bugfix to avoid infinite looping. 
All of the 'demorgan' related xforms need to use 
dyn_castNotVal, not m_Not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85119 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 15:40:07 +00:00
Dan Gohman
a8225083ba Make LSR's OptimizeShadowIV ignore induction variables with negative 
strides for now, because it doesn't handle them correctly. This fixes a
miscompile of SingleSource/Benchmarks/Misc-C++/ray.

This problem was usually hidden because indvars transforms such induction
variables into negations of canonical induction variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85118 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 15:32:57 +00:00
Evan Cheng
a5dc45e3c8 - Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests and 
bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg
  around.
- Relax register scavenging to allow use of partially "not-live" registers. It's
  common for targets to operate on registers where the top bits are undef. e.g.
  s0 =
  d0 = insert_subreg d0<undef>, s0, 1
  ...
     = d0
  When the insert_subreg is eliminated by the coalescer, the scavenger used to
  complain. The previous fix was to keep to insert_subreg around. But that's
  brittle and it's overly conservative when we want to use the scavenger to 
  allocate registers. It's actually legal and desirable for other instructions
  to use the "undef" part of d0. e.g.
  s0 =
  d0 = insert_subreg d0<undef>, s0, 1
  ...
  s1 =
     = s1
     = d0
  We probably need add a "partial-undef" marker on machine operand so the
  machine verifier would not complain.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85091 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 04:56:07 +00:00
Evan Cheng
85def16079 Revert 85085. It causes infinite looping during llvm-gcc build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85090 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 03:51:32 +00:00
Chandler Carruth
8b67f774e9 Move DataTypes.h to include/llvm/System, update all users. This breaks the last 
direct inclusion edge from System to Support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85086 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 01:35:46 +00:00
Chris Lattner
863928fc39 Implement PR3266 & PR5276, folding: 
not (or (icmp, icmp)) -> and(icmp, icmp)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85085 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 01:06:31 +00:00
Chris Lattner
1d871c5e54 fix PR5295 where the .ll parser didn't reject a function after a global 
or global after a function with conflicting names.  Update some testcases
that were accidentally depending on this behavior.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85081 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 23:22:50 +00:00
Daniel Dunbar
22bbd9b9b8 Suppress -Asserts warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85078 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 23:11:06 +00:00
Chris Lattner
46264f020a fix PR5186: the JIT shouldn't try to codegen available_externally 
functions it should just look them up like declarations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85077 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 23:06:42 +00:00
Chandler Carruth
18ad485bf5 Remove unused includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85074 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 22:38:41 +00:00
Jim Grosbach
dd5694203b of -> or 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85065 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 19:14:48 +00:00
Jim Grosbach
f639e9f9e6 80-column cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85064 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 18:55:46 +00:00
Sanjiv Gupta
e1ef91d275 Reapply 85006 with a minor fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85052 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 08:14:11 +00:00
Evan Cheng
4f54c1293a Add ARM getMatchingSuperRegClass to handle S / D / Q cross regclass coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85049 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:53:28 +00:00
Evan Cheng
ed3ad212ec Don't forget subreg indices when folding load / store. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85048 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:52:27 +00:00
Evan Cheng
427c3ba97a Use isIdentityCopy. Fix a bozo bug (flipped condition) in InvalidateRegDef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85047 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:51:47 +00:00
Evan Cheng
d98e30f618 Code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85046 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:49:57 +00:00
Evan Cheng
d66f0015ad Do not delete identity insert_subreg even if dest is virtual. Let later passes delete them. This avoids register scavenger complain. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85045 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:48:51 +00:00
Nick Lewycky
f5a86f45e7 Remove includes of Support/Compiler.h that are no longer needed after the 
VISIBILITY_HIDDEN removal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85043 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:57:41 +00:00
Nick Lewycky
6726b6d75a Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:33:48 +00:00
Chris Lattner
a1e1446056 this is done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85041 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:17:51 +00:00
Chris Lattner
93798daa3e Teach FoldBitCast to be able to handle bitcasts from (e.g.) i128 -> <4 x float>. 
This allows us to simplify this:
union vec2d {
    double e[2];
    double v __attribute__((vector_size(16)));
};
typedef union vec2d vec2d;

static vec2d a={{1,2}}, b={{3,4}};
    
vec2d foo () {
    return (vec2d){ .v = a.v + b.v * (vec2d){{5,5}}.v };
}

down to:

define %0 @foo() nounwind ssp {
entry:
  %mrv5 = insertvalue %0 undef, double 1.600000e+01, 0 ; <%0> [#uses=1]
  %mrv6 = insertvalue %0 %mrv5, double 2.200000e+01, 1 ; <%0> [#uses=1]
  ret %0 %mrv6
}

instead of:

define %0 @foo() nounwind ssp {
entry:
  %mrv5 = insertvalue %0 undef, double extractelement (<2 x double> fadd (<2 x double> fmul (<2 x double> bitcast (<1 x i128> <i128 85174437667405312423031577302488055808> to <2 x double>), <2 x double> <double 3.000000e+00, double 4.000000e+00>), <2 x double> <double 1.000000e+00, double 2.000000e+00>), i32 0), 0 ; <%0> [#uses=1]
  %mrv6 = insertvalue %0 %mrv5, double extractelement (<2 x double> fadd (<2 x double> fmul (<2 x double> bitcast (<1 x i128> <i128 85174437667405312423031577302488055808> to <2 x double>), <2 x double> <double 3.000000e+00, double 4.000000e+00>), <2 x double> <double 1.000000e+00, double 2.000000e+00>), i32 1), 1 ; <%0> [#uses=1]
  ret %0 %mrv6
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85040 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:15:37 +00:00
Chris Lattner
6333c3959b move FoldBitCast earlier in the file, and use it instead of 
ConstantExpr::getBitCast in various places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85039 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:08:26 +00:00
Chris Lattner
ea9d57bc9a refactor FoldBitCast to reduce nesting and to always return a constantexpr 
instead of returning null on failure.  No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85038 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:02:57 +00:00
Nick Lewycky
4a134afaef Remove ICmpInst::isSignedPredicate which was a reimplementation 
CmpInst::isSigned.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85037 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 05:20:17 +00:00
Nick Lewycky
44df023d5f Sink isTrueWhenEqual from ICmpInst to CmpInst. Add a matching isFalseWhenEqual 
which is equal to !isTrueWhenEqual for ints but not for floats.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85036 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 03:50:03 +00:00
Jim Grosbach
07d4964d1f When the scavenger is looking for a good candidate location to restore from a 
spill, it should avoid doing so inside the live range of a virtual register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85026 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 00:45:07 +00:00
Dan Gohman
5fa75b0fa4 MapValue doesn't needs its LLVMContext argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85020 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 23:37:16 +00:00
Dan Gohman
32663b719b Rename isLoopExit to isLoopExiting, for consistency with the wording 
used elsewhere - an exit block is a block outside the loop branched to
from within the loop. An exiting block is a block inside the loop that
branches out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85019 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 23:34:26 +00:00
Dan Gohman
e6e37b94e8 Rewrite LoopRotation's SSA updating code using SSAUpdater. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85016 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 23:19:52 +00:00
Dan Gohman
dc4a745ffe Make DominanceFrontierBase::print's output prettier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85011 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 20:01:11 +00:00
Sanjiv Gupta
ecb28f2b49 Revert back 85006 for now as it breaks PIC16 tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85008 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 18:19:41 +00:00
Sanjiv Gupta
209e6c69d9 Adding support for placing global objects in shared data memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85006 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 18:02:44 +00:00
Chris Lattner
c7b1382e35 various cleanups suggested by Duncan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84993 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 05:27:19 +00:00
Chris Lattner
c5af649758 fix PR5287, a serious regression from my previous patches. Thanks to 
Duncan for the nice tiny testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84992 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 05:22:15 +00:00
Victor Hernandez
66284e063a Auto-upgrade free instructions to calls to the builtin free function. 
Update all analysis passes and transforms to treat free calls just like FreeInst.
Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 04:23:03 +00:00
Evan Cheng
5a850beb2e 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84986 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 02:07:42 +00:00
Anton Korobeynikov
efcd89a5f6 Add some asserts to catch copyRegToReg() fails early 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84983 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 00:27:00 +00:00
Jim Grosbach
2f1abe2dae Restrict Thumb1 register allocation to low registers, even for instructions that 
can access the hi regs. Our prologue and epilogue code doesn't know how to
properly handle save/restore of the hi regs, so things go badly when we alloc
them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84982 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 00:19:24 +00:00
Evan Cheng
c9dfeb1be8 Identity copies should not contribute to spill weight. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 23:09:19 +00:00
Jim Grosbach
7388037dd1 FIXME no longer applies. R12 and R3 are available for allocation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84977 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 23:07:42 +00:00
Jeffrey Yasskin
23e5fcfec4 Fix http://llvm.org/PR4822: allow module deletion after a function has been 
compiled.

When functions are compiled, they accumulate references in the JITResolver's
stub maps. This patch removes those references when the functions are
destroyed.  It's illegal to destroy a Function when any thread may still try to
call its machine code.

This patch also updates r83987 to use ValueMap instead of explicit CallbackVHs
and fixes a couple "do stuff inside assert()" bugs from r84522.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84975 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 22:37:43 +00:00
Victor Hernandez
7b929dad59 Remove AllocationInst. Since MallocInst went away, AllocaInst is the only subclass of AllocationInst, so it no longer is necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84969 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 21:09:37 +00:00
Dan Gohman
7abbd04e90 APInt-ify the gep scaling code, so that it correctly handles the case where 
the scale overflows pointer-sized arithmetic. This fixes PR5281.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84954 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 17:57:43 +00:00