simplify EmitSectionOffset to always use .set if it is
available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98005 91177308-0d34-0410-b5e6-96231b3b80d8

don't reset defaults.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98004 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a version of EmitDifference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98002 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a crash compiling 254.gap for Thumb2.  The Thumb2 add/sub with 12-bit
immediate instructions cannot set the condition codes, so they do not have
the extra cc_out operand.  We hit an assertion during tail duplication
because the instruction being duplicated had more operands that expected.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98001 91177308-0d34-0410-b5e6-96231b3b80d8

Re-commit 97860 with fix. getMallocAllocatedType may return null.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98000 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate a form of PrintLabelName.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97999 91177308-0d34-0410-b5e6-96231b3b80d8

remove another form of EmitReference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97998 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate the non-MCSymbol versions of EmitReference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97997 91177308-0d34-0410-b5e6-96231b3b80d8

mc'ize EmitLabel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97996 91177308-0d34-0410-b5e6-96231b3b80d8

merge DIEObjectLabel and DIEDwarfLabel into DIELabel.

Yes, DIE you fiendish labels, die all of you.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97995 91177308-0d34-0410-b5e6-96231b3b80d8

Introduce DIFile. This will be used to represent header files and source file(s) in debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97994 91177308-0d34-0410-b5e6-96231b3b80d8

elimiante the DWLabel class, using MCSymbol instead.  Start
switching some stuff over to passing around MCSymbol* instead
of stem+ID.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97993 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the vmxon entry in the X86InstrInfo.td so it has the correct prefix bytes
for the encoding and is not the same as vmptrld.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97992 91177308-0d34-0410-b5e6-96231b3b80d8

MC/Macho-O: Align the zerofill section itself to the maximum alignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97991 91177308-0d34-0410-b5e6-96231b3b80d8

Derive DIType from DIScope. This simplifies getContext() where for members the context is a type. This also eliminates need of CompileUnitMaps maintained by dwarf writer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97990 91177308-0d34-0410-b5e6-96231b3b80d8

Remove DbgNode checks in constructor. Debug descriptors are intended to be light weight wrappers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97988 91177308-0d34-0410-b5e6-96231b3b80d8

MC/Mach-O: Fix address compution for zero fill sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97984 91177308-0d34-0410-b5e6-96231b3b80d8

MC/Mach-O: Error out instead of crashing on invalid scattered relocation expressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97983 91177308-0d34-0410-b5e6-96231b3b80d8

X86: Fix encoding for TEST{8,16,32}rr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97982 91177308-0d34-0410-b5e6-96231b3b80d8

Add documentation on sibling call optimization. Rename tailcall2.ll test to sibcall.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97980 91177308-0d34-0410-b5e6-96231b3b80d8

isNull() is not used any more.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97979 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid using DIDescriptor.isNull().
This is a first step towards eliminating checks in Descriptor constructors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97975 91177308-0d34-0410-b5e6-96231b3b80d8

Iterator traits and swap.  closes PR6548 and PR6549

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97974 91177308-0d34-0410-b5e6-96231b3b80d8

Don't always run the ocaml kaleidoscope tutorials.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97973 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r97726 and r97728 at ddunbar's request; we want to solve this
some other way when it comes to be necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97972 91177308-0d34-0410-b5e6-96231b3b80d8

Add OCaml tutorial to the examples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97966 91177308-0d34-0410-b5e6-96231b3b80d8

Update the OCaml Kaleidoscope tutorial.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97965 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r97947.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97963 91177308-0d34-0410-b5e6-96231b3b80d8

disambiguate some types, add a fixme about some
inconsistent intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97959 91177308-0d34-0410-b5e6-96231b3b80d8

fix some more ambiguous patterns, remove another nontemporalstore
pattern which is broken (source and address swapped).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97958 91177308-0d34-0410-b5e6-96231b3b80d8

Correct immediate sizes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97957 91177308-0d34-0410-b5e6-96231b3b80d8

fix a type compatibility bug.  imm is i32 in the input
pattern, not i64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97956 91177308-0d34-0410-b5e6-96231b3b80d8

fix a bunch of partially ambiguous patterns on ARM.  As an
example, this:

(set DPR:$dst, (fsub (fneg (fmul DPR:$a, DPR:$b)), DPR:$dstin))

is ambiguous because DPR contains both f64 and v2f32.  tblgen
currently accidentally picks f64 because it's first in the
regclass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97955 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bunch of ambiguous patterns which tblgen happens to infer types
for, due to a bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97953 91177308-0d34-0410-b5e6-96231b3b80d8

Node arguments to type casts can have names too.  This code
needs to be majorly refactored, but this spot bugfix allows
things like:

 def vmrghw_shuffle : PatFrag<(ops node:$lhs, node:$rhs),
                             (vector_shuffle (v4i32 node:$lhs), node:$rhs), [{
...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97952 91177308-0d34-0410-b5e6-96231b3b80d8

tidy up

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97950 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid using DIDescriptor.isNull().
This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97947 91177308-0d34-0410-b5e6-96231b3b80d8

Add Order to SDDbgValue

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97939 91177308-0d34-0410-b5e6-96231b3b80d8

Fix dbg value handling in tail merging.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97938 91177308-0d34-0410-b5e6-96231b3b80d8

remove a non-temporal store pattern which is not tested and
could never have matched because the operand list was backwards.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97933 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r97917, which was causing Clang Debug self-host failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97932 91177308-0d34-0410-b5e6-96231b3b80d8

Roll back r97918 again.  Just configuring against llvm-gcc wasn't enough to run
the FrontendC* tests. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97921 91177308-0d34-0410-b5e6-96231b3b80d8

Reapply r97788 to free MDNodes when the LLVMContext is destroyed.  It
bootstraps llvm-gcc this time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97918 91177308-0d34-0410-b5e6-96231b3b80d8

Roll r97906 forward again, without double-deleting CompileUnit::IndexTyDie.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97917 91177308-0d34-0410-b5e6-96231b3b80d8

Add findNearestCommonDominator() for PostDominators.

Add a missing interface to be able to call findNearestCommonDominator
for a PostDominanceTree. The function itself is already implemented in
DominatorTreeBase. The interface however was only added to the
DominatorTree class, but not the PostDominatorClass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97915 91177308-0d34-0410-b5e6-96231b3b80d8

Use Other as a sentinel instead of iAny.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97914 91177308-0d34-0410-b5e6-96231b3b80d8

turn off debug spew

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97912 91177308-0d34-0410-b5e6-96231b3b80d8

more factoring.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97911 91177308-0d34-0410-b5e6-96231b3b80d8

_2_ gcc crashes, ah, ah, ah...

(Rolling back r97906.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97909 91177308-0d34-0410-b5e6-96231b3b80d8

teach tblgen to be more aggressive when factoring CheckType nodes.
Now it will factor things like this:

CheckType i32
  ...
CheckOpcode ISD::AND
  CheckType i64
  ...

into:

SwitchType:
  i32: ...
  i64:
    CheckOpcode ISD::AND
    ...

This shrinks hte table by a few bytes, nothing spectacular.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97908 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid leaking CompileUnits and DbgScopes from DwarfDebug.  Leaks found by Valgrind!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97906 91177308-0d34-0410-b5e6-96231b3b80d8

add some helper functions and implement isContradictory
for CheckValueTypeMatcher.  The isContradictory implementation
helps us factor better, shrinking x86 table from 79144 -> 78896
bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97905 91177308-0d34-0410-b5e6-96231b3b80d8

tidy up

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97895 91177308-0d34-0410-b5e6-96231b3b80d8

Re-committing the failed r97807 commit with changes to eliminate warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97891 91177308-0d34-0410-b5e6-96231b3b80d8

Add verification of union types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97889 91177308-0d34-0410-b5e6-96231b3b80d8

Describe what's going on with mingw alloca and why do we need separate instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97888 91177308-0d34-0410-b5e6-96231b3b80d8

Initial bits of ARMv4-only support.
Patch by John Tytgat!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97886 91177308-0d34-0410-b5e6-96231b3b80d8

Lower dynamic stack allocation on mingw32 to separate instruction.
We cannot use a normal call here since it has extra unmodelled side
effects (it changes stack pointer). This should fix PR5292.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97884 91177308-0d34-0410-b5e6-96231b3b80d8

make APFloat::toString be const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97883 91177308-0d34-0410-b5e6-96231b3b80d8

disable this for mingw as well, we really need a 'has no dynamic linking' predicate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97882 91177308-0d34-0410-b5e6-96231b3b80d8

Do not use '&' prefix for globals when register base field is non-zero, otherwise msp430-as will silently miscompile the code (TI's assembler report an error though).

This fixes PR6349

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97877 91177308-0d34-0410-b5e6-96231b3b80d8

Let the fallthrough handle whether or not we've changed anything
before we try to optimize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97876 91177308-0d34-0410-b5e6-96231b3b80d8

Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub
out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97875 91177308-0d34-0410-b5e6-96231b3b80d8

Add static methods to handle Linkage Types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97871 91177308-0d34-0410-b5e6-96231b3b80d8

clean this up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97870 91177308-0d34-0410-b5e6-96231b3b80d8

revert r97807, it introduced build warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97869 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb1 epilogue code generation needs to take into account that callee-saved
registers may be restored via a pop instruction, not just a tRestore.
This fixes nightly test 471.omnetep for Thumb1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97867 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily revert:

Log:
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.

Modified:
   llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
   llvm/trunk/test/Transforms/InstCombine/objsize.ll

It appears to be causing swb and nightly test failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97866 91177308-0d34-0410-b5e6-96231b3b80d8

Fix another case where LSR was affected by debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97865 91177308-0d34-0410-b5e6-96231b3b80d8

Don't update physical register def.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8

Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97860 91177308-0d34-0410-b5e6-96231b3b80d8

Add a LLVMWriteBitcodeToFD that exposes the raw_fd_ostream options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97858 91177308-0d34-0410-b5e6-96231b3b80d8

Whoops, the old LLVMWriteBitcodeToFileHandle closed the stream.

Luckily this never was released.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97857 91177308-0d34-0410-b5e6-96231b3b80d8

LLVMWriteBitcodeToFileHandle should work on all architectures now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97856 91177308-0d34-0410-b5e6-96231b3b80d8

Add some new bits of debug info handling.  No
functional change yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97855 91177308-0d34-0410-b5e6-96231b3b80d8

Reapply r97778 and r97779, enabled only for unsigned i64 to f64
conversions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97854 91177308-0d34-0410-b5e6-96231b3b80d8

Test case for r97851.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97852 91177308-0d34-0410-b5e6-96231b3b80d8

Update CMake build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97846 91177308-0d34-0410-b5e6-96231b3b80d8

Don't emit global symbols into the (__TEXT,__ustring) section on Darwin. This
is a workaround for <rdar://problem/7672401/> (which I filed).

This let's us build Wine on Darwin, and it gets the Qt build there a little bit
further (so Doug says).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97845 91177308-0d34-0410-b5e6-96231b3b80d8

Move SimplifyLibCalls's LibCall builders to a separate file so they
can be used in more places.  Add an argument for the TargetData that
most of them need. Update for the getInt8PtrTy() change.  Should be
no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97844 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for an i8* type accessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97841 91177308-0d34-0410-b5e6-96231b3b80d8

Better handling of dead super registers in LiveVariables. We used to do this:

   CALL ... %RAX<imp-def>
   ... [not using %RAX]
   %EAX = ..., %RAX<imp-use, kill>
   RET %EAX<imp-use,kill>

Now we do this:

   CALL ... %RAX<imp-def, dead>
   ... [not using %RAX]
   %EAX = ...
   RET %EAX<imp-use,kill>

By not artificially keeping %RAX alive, we lower register pressure a bit.

The correct number of instructions for 2008-08-05-SpillerBug.ll is obviously
55, anybody can see that. Sheesh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97838 91177308-0d34-0410-b5e6-96231b3b80d8

We don't really care about correct register liveness information after the
post-ra scheduler has run. Disable the verifier checks that late in the game.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97837 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid creating bad PHI instructions when BR is being const-folded.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a case where LSR is sensitive to debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97830 91177308-0d34-0410-b5e6-96231b3b80d8

Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97828 91177308-0d34-0410-b5e6-96231b3b80d8

Instcombine should turn llvm.objectsize of a alloca with static size to an integer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97827 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97818 91177308-0d34-0410-b5e6-96231b3b80d8

fix bss section printing for cell, patch by Kalle Raiskila!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97814 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6512, a case where instcombine would incorrectly merge loads
from different addr spaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97813 91177308-0d34-0410-b5e6-96231b3b80d8

Reworking the stack layout that the MicroBlaze backend generates.

The MicroBlaze backend was generating stack layouts that did not
conform correctly to the ABI. This update generates stack layouts
which are closer to what GCC does.

Variable arguments support was added as well but the stack layout
for varargs has not been finalized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97807 91177308-0d34-0410-b5e6-96231b3b80d8

Adding MBlaze to cmake target list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97806 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR6503.  This turned into a much more interesting and nasty bug.  Various
parts of the cmp|cmp and cmp&cmp folding logic wasn't prepared for vectors
(unrelated to the bug but noticed while in the code) and the code was
*definitely* not safe to use by the (cast icmp)|(cast icmp) handling logic
that I added in r95855.  Fix all this up by changing the various routines
to more consistently use IRBuilder and not pass in the I which had the wrong
type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97801 91177308-0d34-0410-b5e6-96231b3b80d8

make these less sensitive to temporary naming.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97799 91177308-0d34-0410-b5e6-96231b3b80d8

remove this testcase, it isn't clear what it was testing and it is subsumed by or.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97798 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an oops in x86 sibcall optimization. If the ByVal callee argument is itself passed as a pointer, then it's obviously not safe to do a tail call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97797 91177308-0d34-0410-b5e6-96231b3b80d8

If LD_LIBRARY_PATH is set in the system environment, use it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97796 91177308-0d34-0410-b5e6-96231b3b80d8

simplify some functions and make them work with vector
compares, noticed by inspection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97795 91177308-0d34-0410-b5e6-96231b3b80d8

fix a nice subtle reassociate bug which would only occur
in a very specific use pattern embodied in the carefully
reduced testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97794 91177308-0d34-0410-b5e6-96231b3b80d8

Move GetStringLength and helper from SimplifyLibCalls to ValueTracking.
No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97793 91177308-0d34-0410-b5e6-96231b3b80d8