comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152209 91177308-0d34-0410-b5e6-96231b3b80d8
Fix cmake

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152210 91177308-0d34-0410-b5e6-96231b3b80d8
Where the BranchFolding pass removes a branch then adds another better branch,
the DebugLoc information can be maintained throughout by grabbing the DebugLoc
before the RemoveBranch and then passing the result to the InsertBranch.
Patch by Andrew Stanford-Jason!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152212 91177308-0d34-0410-b5e6-96231b3b80d8
Add support to the hashing infrastructure for automatically hashing both
integral and enumeration types. This is accomplished with a bit of
template type trait magic. Thanks to Richard Smith for the core idea
here to detect viable types by detecting the set of types which can be
default constructed in a template parameter.

This is used (in conjunction with a system for detecting nullptr_t
should it exist) to provide an is_integral_or_enum type trait that
doesn't need a whitelist or direct compiler support.

With this, the hashing is extended to the more general facility. This
will be used in a subsequent commit to hashing more things, but I wanted
to make sure the type trait magic went through the build bots separately
in case other compilers don't like this formulation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152217 91177308-0d34-0410-b5e6-96231b3b80d8
Remove another outbreak of customized (and completely broken) hashing.
This one is particularly annoying because the hashing algorithm is
highly specialized, with a strange "equivalence" definition that subsets
the fields involved.

Still, this looks at the exact same set of data as the old code, but
without bitwise or-ing over parts of it and other mixing badness. No
functionality changed here. I've left a substantial fixme about the fact
that there is a cleaner and more principled way to do this, but it
requires making the equality definition actual stable for particular
types...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152218 91177308-0d34-0410-b5e6-96231b3b80d8
What's better than fixing and simplifying broken hash functions?
Deleting them because they aren't used. =D

Yell if you need these, I'm happy to instead replace them with nice uses
of the new infrastructure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152219 91177308-0d34-0410-b5e6-96231b3b80d8
Switch the is_integral_or_enum trait machinery to use an explicit
template argument and an *implicit* conversion from '0' to a null
pointer. For some bizarre reason, GCC 4.3.2 thinks that the cast to
'(T*)' is invalid inside of an enumerator's value... which it isn't but
whatever. ;] This pattern is used elsewhere in the type_traits header
and so hopefully will survive the wrath of the build bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152220 91177308-0d34-0410-b5e6-96231b3b80d8
Try to clarify this comment some.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152221 91177308-0d34-0410-b5e6-96231b3b80d8
Attempt #2 at appeasing GCC 4.3. This compiler really doesn't like these
traits.

With this change, the pattern used here is *extremely* close to the
pattern used elsewhere in the file, so I'm hoping it survives the
build-bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152225 91177308-0d34-0410-b5e6-96231b3b80d8
Try a completely different approach to this type trait to appease older
compilers. It seems that GCC 4.3 (and likely older) simply aren't going
to do SFINAE on non-type template parameters the way Clang and modern
GCCs do...

Now we detect the implicit conversion to an integer type, and then
blacklist classes, pointers, and floating point types. This seems to
work well enough, and I'm hopeful will return the bots to life.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152227 91177308-0d34-0410-b5e6-96231b3b80d8
Fix infinite loop in nested multiclasses.

Patch by Michael Liao!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152232 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r152202 as it's causing internal buildbot failures.

Original commit message:
Use uint16_t to store InstrNameIndices in MCInstrInfo. Add asserts to protect 
all 16-bit string table offsets. Also make sure the string to offset table 
string is not larger than 65536 characters since larger string literals aren't 
portable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152233 91177308-0d34-0410-b5e6-96231b3b80d8
configure: Don't require a perl interpreter to be present, LLVM's buildsystem doesn't depend on perl anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152234 91177308-0d34-0410-b5e6-96231b3b80d8
Use llvm-mc instead of llc. Patch by Jack Carter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152242 91177308-0d34-0410-b5e6-96231b3b80d8
[fast-isel] ARMEmitCmp generates FMSTAT, which transfers the floating-point 
condition flags to CPSR.  This allows us to simplify SelectCmp.
Patch by Zonr Chang <zonr.xchg@gmail.com>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152243 91177308-0d34-0410-b5e6-96231b3b80d8
SmallPtrSet: Copy all the elements when swapping, not just numelements.

This fixes a build failure in webkit. Copying all elements shouldn't be
necessary, I'll look out for a better fix soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152252 91177308-0d34-0410-b5e6-96231b3b80d8
Copy the right amount of elements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152254 91177308-0d34-0410-b5e6-96231b3b80d8
misched preparation: rename core scheduler methods for consistency.

We had half the API with one convention, half with another. Now was a
good time to clean it up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152255 91177308-0d34-0410-b5e6-96231b3b80d8
misched prep: rename InsertPos to End.

ScheduleDAGInstrs knows nothing about how instructions will be moved or inserted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152256 91177308-0d34-0410-b5e6-96231b3b80d8
misched prep: remove extra "protected"

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