llvm-svn: 77135

llvm-svn: 77134

llvm-svn: 77133

simplify targets.

llvm-svn: 77132

putting readonly constants in the readonly section if we have one.

llvm-svn: 77131

llvm-svn: 77130

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.

llvm-svn: 77129

llvm-svn: 77127

classes, and migrate existing targets over.

llvm-svn: 77126

llvm-svn: 77125

llvm-svn: 77124

 - This is now shorter, simpler, safer, and more efficient, what a deal.

llvm-svn: 77119

llvm-svn: 77116

llvm-svn: 77115

 - This was overkill and inconsistently implemented.

llvm-svn: 77114

 - 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.

llvm-svn: 77111

llvm-svn: 77110

for now.  Make the section switching directives more consistent
by not including \n and including \t for them all.

llvm-svn: 77107

llvm-svn: 77105

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.

llvm-svn: 77104

llvm-svn: 77102

Patch by Anton Korzh, with some modifications from me.

llvm-svn: 77101

llvm-svn: 77100

 - 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   it is no longer valid to call setName(0), which was equivalent to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...

llvm-svn: 77099

Also, change MDString to use a StringRef.

llvm-svn: 77098

an enum.

llvm-svn: 77096

values.  Hopefully this fixes PR4622.

llvm-svn: 77088

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.

llvm-svn: 77085

llvm-svn: 77084

Thanks to Rafael for the great example.

llvm-svn: 77083

llvm-svn: 77080

the step value as unsigned, the start value and the addrec
itself still need to be treated as signed.

llvm-svn: 77078

llvm-svn: 77065

 - 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.

llvm-svn: 77060

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

llvm-svn: 77056

 - Less boilerplate == good.

llvm-svn: 77052

llvm-svn: 77051

 - The only meat here is in Value.{h,cpp} the rest is essential 'const
   std::string &' -> 'const Twine &'.

llvm-svn: 77048

llvm-svn: 77045

llvm-svn: 77044