[Utils][vim] Add missing highlights for fast-math flags

[frasercrmck]

Summary

This patch adds the afn, contract, and reassoc fast-math flags.

It also fixes up fneg's order in the alphabetized list.

[craig.topper]

llvm/utils/vim/syntax/llvm.vim

27–28

Is this file following 80 columns?

[frasercrmck]

• reflow to 80 cols

[frasercrmck]

llvm/utils/vim/syntax/llvm.vim

27–28

Not entirely as there's a particularly long regex later on in the file, but I was perhaps being a bit lazy in order to have a clearer diff. Reformatting to 80 columns seems like the best thing to do.

[MaskRay]

Looks great!

[craig.topper]

LGTM

llvm/utils/vim/syntax/llvm.vim

27–28

Not at all your fault, but fneg is out of alphabetical order if you want to fix it before you commit.

[frasercrmck]

• fix alphabetization(?) of fneg

llvm/utils/vim/syntax/llvm.vim

 syn keyword llvmType type label opaque token ptr
 syn match   llvmType /\<i\d\+\>/
 
 " Instructions.
 " The true and false tokens can be used for comparison opcodes, but it's
 " much more common for these tokens to be used for boolean constants.
 syn keyword llvmStatement add addrspacecast alloca and arcp ashr atomicrmw
 syn keyword llvmStatement bitcast br catchpad catchswitch catchret call callbr
 syn keyword llvmStatement cleanuppad cleanupret cmpxchg eq exact extractelement
-syn keyword llvmStatement extractvalue fadd fast fcmp fdiv fence fmul fpext
-syn keyword llvmStatement fptosi fptoui fptrunc free freeze frem fsub fneg getelementptr
-syn keyword llvmStatement icmp inbounds indirectbr insertelement insertvalue
-syn keyword llvmStatement inttoptr invoke landingpad load lshr malloc max min
-syn keyword llvmStatement mul nand ne ninf nnan nsw nsz nuw oeq oge ogt ole
-syn keyword llvmStatement olt one or ord phi ptrtoint resume ret sdiv select
-syn keyword llvmStatement sext sge sgt shl shufflevector sitofp sle slt srem
-syn keyword llvmStatement store sub switch trunc udiv ueq uge ugt uitofp ule ult
-syn keyword llvmStatement umax umin une uno unreachable unwind urem va_arg
-syn keyword llvmStatement xchg xor zext
+syn keyword llvmStatement extractvalue fadd fast fcmp fdiv fence fmul fneg fpext
+syn keyword llvmStatement fptosi fptoui fptrunc free freeze frem fsub
+syn keyword llvmStatement getelementptr icmp inbounds indirectbr insertelement
+syn keyword llvmStatement insertvalue inttoptr invoke landingpad load lshr
+syn keyword llvmStatement malloc max min mul nand ne ninf nnan nsw nsz nuw oeq
+syn keyword llvmStatement oge ogt ole olt one or ord phi ptrtoint resume ret
+syn keyword llvmStatement sdiv select sext sge sgt shl shufflevector sitofp
+syn keyword llvmStatement sle slt srem store sub switch trunc udiv ueq uge ugt
+syn keyword llvmStatement uitofp ule ult umax umin une uno unreachable unwind
+syn keyword llvmStatement urem va_arg xchg xor zext
 
 " Keywords.
 syn keyword llvmKeyword
       \ acq_rel
       \ acquire
       \ addrspace
       \ alias
       \ align