Do not seed mstadata into the value map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77208 91177308-0d34-0410-b5e6-96231b3b80d8

make COFF work like ELF and macho, by splitting out into its own
header even though there is only one COFF target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77204 91177308-0d34-0410-b5e6-96231b3b80d8

don't create default text/data sections for all targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77203 91177308-0d34-0410-b5e6-96231b3b80d8

Apparently alpha doesn't use ElfTargetAsmInfo (?)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77202 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb-2 does not have RSC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77201 91177308-0d34-0410-b5e6-96231b3b80d8

Add ".w" suffix for wide thumb-2 instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77199 91177308-0d34-0410-b5e6-96231b3b80d8

inline a method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77198 91177308-0d34-0410-b5e6-96231b3b80d8

apparently we have "windows" and "coff", which are different(?)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77197 91177308-0d34-0410-b5e6-96231b3b80d8

sink text/data section creation down into the target-specific places that
should know about them.  PECoff doesn't share these, and I want all sections
to be created by object-file-specific code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77196 91177308-0d34-0410-b5e6-96231b3b80d8

Test case to check that separate section is created for a global variable specified with section attribute.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77195 91177308-0d34-0410-b5e6-96231b3b80d8

Change the assembly syntax for nsw, nuw, and exact, putting them
after their associated opcodes rather than before. This makes them
a little easier to read.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77194 91177308-0d34-0410-b5e6-96231b3b80d8

Fix wording in comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77193 91177308-0d34-0410-b5e6-96231b3b80d8

update testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77192 91177308-0d34-0410-b5e6-96231b3b80d8

32-bit darwin targets support .literal16 too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77191 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing slashes from include paths. Some versions of mingw don't like them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77188 91177308-0d34-0410-b5e6-96231b3b80d8

Test commit: fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77187 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate getNamed/getUnnamedSection, adding a new and unified getOrCreateSection
instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77186 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate SectionFlags, just embed a SectionKind into Section
instead and drive things based off of that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77184 91177308-0d34-0410-b5e6-96231b3b80d8

If CPSR is modified but the def is dead, then it's ok to fold the load / store.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77182 91177308-0d34-0410-b5e6-96231b3b80d8

Use t2LDRi12 and t2STRi12 to load / store to / from stack frames. Eliminate more getOpcode calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77181 91177308-0d34-0410-b5e6-96231b3b80d8

Generate a libcall for i8 multiply.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77179 91177308-0d34-0410-b5e6-96231b3b80d8

fixed incorrect lowering of ISD::SUB node. SUB has only one result value.
It wasn't caught during tests because we never got a sub generated, (i8 was always getting promoted to int, which in turn was broken into subc/sube). Though the optimizer leaves an i8 sub now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77178 91177308-0d34-0410-b5e6-96231b3b80d8

Use the right instructions to copy between GPR and the more strictive tGPR classes. t2MOV does not match the RC requirements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77175 91177308-0d34-0410-b5e6-96231b3b80d8

Merge isLoadFromStackSlot into one since it behaves the same regardless of sub-target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77174 91177308-0d34-0410-b5e6-96231b3b80d8

Just use a single isMoveInstr to catch all the cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77173 91177308-0d34-0410-b5e6-96231b3b80d8

Rename tMOVhi2lor to tMOVgpr2tgpr. It's not moving from a high register to a low register. It's moving from a GPR register class to a more restrictive tGPR class. Also change tMOVlor2hir, and tMOVhir2hir.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77172 91177308-0d34-0410-b5e6-96231b3b80d8

Reorganize code a bit to reduce indentation.  No visible functionality
change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77171 91177308-0d34-0410-b5e6-96231b3b80d8

Fix libLTO:
 * Call InitializeAllTargets on every path where we might query the
   TargetRegistry. This fixes PR4604.
 * flush the formatted_raw_ostream& or else not all of the assembly will make
   it to the .s file. (It doesn't do this in its destructor?!)
 * Due to a reversed conditional, libLTO was reporting many symbols as both
   defined and undefined, including two definitions of the same symbol name
   in its symbol list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77170 91177308-0d34-0410-b5e6-96231b3b80d8

Don't use llvm_report_error in libSystem, this is a layering violation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77169 91177308-0d34-0410-b5e6-96231b3b80d8

untangle a TargetAsmInfo hack where ELFTargetAsmInfo would create a
'unnamed' bss section, but some impls would want a named one.  Since
they don't have consistent behavior, just make each target do their
own thing, instead of doing something "sortof common" then having
targets change immutable objects later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77165 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor. Get rid of a few more getOpcode() calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77164 91177308-0d34-0410-b5e6-96231b3b80d8

reduce indentation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77161 91177308-0d34-0410-b5e6-96231b3b80d8

Use the RHS length instead of the LHS length.  They are both the same,
but this ends up compiling code like this:

int foo(const StringRef &R) {
  return R == "food";
}

to use a constant sized memcmp instead of a variable memcmp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77160 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the breakage caused by 76950.
PIC16 has special naming conventions for variables having section names specified via section attribute.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77153 91177308-0d34-0410-b5e6-96231b3b80d8

Remove Value::getName{Start,End}, the last of the old Name APIs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77152 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure getName().data() is always null terminated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77149 91177308-0d34-0410-b5e6-96231b3b80d8

Remove Value::getNameLen

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77148 91177308-0d34-0410-b5e6-96231b3b80d8

Move MSILModule and MSILWriter into the 'llvm' namespace, instead of the 'MSIL'
namespace which could very well conflict with non-LLVM code.

Also clean up some spacing, remove an extra header.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77146 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate some uses of DOUT, cerr, and getNameStart().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77145 91177308-0d34-0410-b5e6-96231b3b80d8

remove a densemap from TargetAsmInfo that was uniquing the targetflags strings,
just use a smallstring instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77144 91177308-0d34-0410-b5e6-96231b3b80d8

simplify SectionFlagsForGlobal, even though I want to kill it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77143 91177308-0d34-0410-b5e6-96231b3b80d8

make SectionKind keep track of whether a global had an explicit
section specified for it or not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77142 91177308-0d34-0410-b5e6-96231b3b80d8

simplify this code now that SectionKind knows if a global is weak or not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77141 91177308-0d34-0410-b5e6-96231b3b80d8

make SectionKind know whether a symbol is weak or not in addition
to its classification.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77140 91177308-0d34-0410-b5e6-96231b3b80d8

Make the kind actually be private.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77139 91177308-0d34-0410-b5e6-96231b3b80d8

rename Mergable -> Mergeable and Writable -> Writeable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77138 91177308-0d34-0410-b5e6-96231b3b80d8

two files I missed in the last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77137 91177308-0d34-0410-b5e6-96231b3b80d8

remove a bunch of helper functions, just use SectionKind::get instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77135 91177308-0d34-0410-b5e6-96231b3b80d8

simplify getSectionForMergableConstant to take a SectionKind.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77134 91177308-0d34-0410-b5e6-96231b3b80d8

precreate 4/8/16 byte mergable sections to simplify code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77133 91177308-0d34-0410-b5e6-96231b3b80d8

introduce specialized mergable const sectionkinds for elements of size 4/8/16 to
simplify targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77132 91177308-0d34-0410-b5e6-96231b3b80d8

improve the default impl of getSectionForMergableConstant by
putting readonly constants in the readonly section if we have one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77131 91177308-0d34-0410-b5e6-96231b3b80d8

make elf targets correctly handle constant pool entries that require relocations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77130 91177308-0d34-0410-b5e6-96231b3b80d8

Rearrange all the SectionKinds and structure them into a hierarchical
group instead of a bunch of random unrelated ideas.  Provide predicates
to categorize a SectionKind into a group, and use them instead of
getKind() throughout the code.

This also renames a ton of SectionKinds to be more consistent and
evocative, and adds a huge number of comments on the enums so that
I will hopefully be able to remember how this stuff works long from
now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77129 91177308-0d34-0410-b5e6-96231b3b80d8

Update target registration description in Writing An LLVM Backend, and add
a mention in release notes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77128 91177308-0d34-0410-b5e6-96231b3b80d8

Sort list of targets in --version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77127 91177308-0d34-0410-b5e6-96231b3b80d8

Factor commonality in triple match routines into helper template for registering
classes, and migrate existing targets over.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77126 91177308-0d34-0410-b5e6-96231b3b80d8

Oops, forgot XCore. Sorry XCore!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77125 91177308-0d34-0410-b5e6-96231b3b80d8

Update for API change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77124 91177308-0d34-0410-b5e6-96231b3b80d8

fix isReadOnly predicate to not include data that has to be
writable because of teh dynamic linker.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77122 91177308-0d34-0410-b5e6-96231b3b80d8

remove a dead enum case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77121 91177308-0d34-0410-b5e6-96231b3b80d8

Update Triple to use StringRef/Twine based APIs.
 - This is now shorter, simpler, safer, and more efficient, what a deal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77119 91177308-0d34-0410-b5e6-96231b3b80d8

Add StringRef::{slice, split}, two convenient string operations which are simple
and efficient on a StringRef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77117 91177308-0d34-0410-b5e6-96231b3b80d8

put normal data into .data instead of .data.rel on elf systems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77116 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused header

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77115 91177308-0d34-0410-b5e6-96231b3b80d8

Kill Target specific ModuleMatchQuality stuff.
 - This was overkill and inconsistently implemented.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77114 91177308-0d34-0410-b5e6-96231b3b80d8

Add TargetRegistry::lookupTarget.
 - This is a simplified mechanism which just looks up a target based on the
   target triple, with a few additional flags.

 - Remove getClosestStaticTargetForModule, the moral equivalent is now:
     lookupTarget(Mod->getTargetTriple, true, false, ...);

 - This no longer does the fuzzy matching with target data (based on endianness
   and pointer width) that getClosestStaticTargetForModule was doing, but this
   was deemed unnecessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77111 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate a pointless switch stmt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77110 91177308-0d34-0410-b5e6-96231b3b80d8

finish simplifying DarwinTargetAsmInfo::SelectSectionForGlobal
for now.  Make the section switching directives more consistent
by not including \n and including \t for them all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77107 91177308-0d34-0410-b5e6-96231b3b80d8

Some clients rely on getName{Start,End} not returning 0, even if the length is
0.
 - I could have swore the prev change went through a make check cycle...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77106 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite getName{Start,End,Len} in terms of getName(), instead of vice-versa.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77105 91177308-0d34-0410-b5e6-96231b3b80d8

simplify DarwinTargetAsmInfo::SelectSectionForGlobal a bit
and make it more aggressive, we now put:

const int G2 __attribute__((weak)) = 42;

into the text (readonly) segment like gcc, previously we put
it into the data (readwrite) segment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77104 91177308-0d34-0410-b5e6-96231b3b80d8

simplify some predicates, add isMergableString()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77103 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77102 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for ARM Neon VREV instructions.
Patch by Anton Korzh, with some modifications from me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77101 91177308-0d34-0410-b5e6-96231b3b80d8

Remove Value::setName(const char*, unsigned).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77100 91177308-0d34-0410-b5e6-96231b3b80d8

Remove Value::setName(const char*).
 - Split into a separate patch because there is a slight functionality change,
   it is no longer valid to call setName(0), which was equivalent to
   setName(""). I'm hoping no one depends on this...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77099 91177308-0d34-0410-b5e6-96231b3b80d8

Remove Value::{isName, getNameRef}.

Also, change MDString to use a StringRef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77098 91177308-0d34-0410-b5e6-96231b3b80d8

make SectionKind be a first-class pod struct instead of just
an enum.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77096 91177308-0d34-0410-b5e6-96231b3b80d8

Added a test and fixed a bug in BumpPtrAllocator relating to large alignment
values.  Hopefully this fixes PR4622.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77088 91177308-0d34-0410-b5e6-96231b3b80d8

this is (unfortunately) several changes mixed together:

1. Spell SectionFlags::Writeable as "Writable".
2. Add predicates for deriving SectionFlags from SectionKinds.
3. Sink ELF-specific getSectionPrefixForUniqueGlobal impl into
   ELFTargetAsmInfo.
4. Fix SectionFlagsForGlobal to know that BSS/ThreadBSS has the
   BSS bit set (the real fix for PR4619).
5. Fix isSuitableForBSS to not put globals with explicit sections
   set in BSS (which was the reason #4 wasn't fixed earlier).
6. Remove my previous hack for PR4619.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77085 91177308-0d34-0410-b5e6-96231b3b80d8

document some invariants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77084 91177308-0d34-0410-b5e6-96231b3b80d8

add the most expedient hack to fix PR4619, along with a testcase.
Thanks to Rafael for the great example.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77083 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a few comments to say "backedge-taken count" instead of
"trip count".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77081 91177308-0d34-0410-b5e6-96231b3b80d8

SCEV objects are no longer reference-counted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77080 91177308-0d34-0410-b5e6-96231b3b80d8

Update comments to new-style syntax.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77079 91177308-0d34-0410-b5e6-96231b3b80d8

When attempting to sign-extend an addrec by interpreting
the step value as unsigned, the start value and the addrec
itself still need to be treated as signed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77078 91177308-0d34-0410-b5e6-96231b3b80d8

Remove spurious semicolons.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77077 91177308-0d34-0410-b5e6-96231b3b80d8

Convert DOUT to DEBUG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77065 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify JIT target selection.
 - Instead of requiring targets to define a JIT quality match function, we just
   have them specify if they support a JIT.

 - Target selection for the JIT just gets the host triple and looks for the best
   target which matches the triple and has a JIT.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77060 91177308-0d34-0410-b5e6-96231b3b80d8

Mark attributes of return insn correctly. It was being assumed safe to delete in isSafeToDelete (a thing checked-in 76281).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77056 91177308-0d34-0410-b5e6-96231b3b80d8

remove this test.  It is currently failing because we now emit the string
on darwin with ".cstring" instead of ".section  __TEXT,__cstring".  They
are the same and the former is better.  Remove this because this is no longer
magic pixie dust in the frontend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77055 91177308-0d34-0410-b5e6-96231b3b80d8

eventually we should describe string options in the data structures section

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77054 91177308-0d34-0410-b5e6-96231b3b80d8

minor tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77053 91177308-0d34-0410-b5e6-96231b3b80d8

Add new helpers for registering targets.
 - Less boilerplate == good.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77052 91177308-0d34-0410-b5e6-96231b3b80d8

Finish migrating VMCore to StringRef/Twine based APIs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77051 91177308-0d34-0410-b5e6-96231b3b80d8

Ok, "most clients should be unaffected" was a lie. Add notes on upgrading.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77050 91177308-0d34-0410-b5e6-96231b3b80d8

Initial update to VMCore to use Twines for string arguments.
 - The only meat here is in Value.{h,cpp} the rest is essential 'const
   std::string &' -> 'const Twine &'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77048 91177308-0d34-0410-b5e6-96231b3b80d8

Fix 80-col violations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77045 91177308-0d34-0410-b5e6-96231b3b80d8

Move ExtractElementInst to ::Create instead of new. Update all uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77044 91177308-0d34-0410-b5e6-96231b3b80d8