[mips] Involves microMIPS's jump in the analyzable branch set

[atanasyan]

Summary

Involves microMIPS's jump in the analyzable branch set to reduce some code patterns.

[atanasyan]

Ping?

[abeserminji]

LGTM

llvm/trunk/lib/Target/Mips/MipsSEInstrInfo.cpp

 
 unsigned MipsSEInstrInfo::getAnalyzableBrOpc(unsigned Opc) const {
   return (Opc == Mips::BEQ    || Opc == Mips::BEQ_MM || Opc == Mips::BNE    ||
           Opc == Mips::BNE_MM || Opc == Mips::BGTZ   || Opc == Mips::BGEZ   ||
           Opc == Mips::BLTZ   || Opc == Mips::BLEZ   || Opc == Mips::BEQ64  ||
           Opc == Mips::BNE64  || Opc == Mips::BGTZ64 || Opc == Mips::BGEZ64 ||
           Opc == Mips::BLTZ64 || Opc == Mips::BLEZ64 || Opc == Mips::BC1T   ||
           Opc == Mips::BC1F   || Opc == Mips::B      || Opc == Mips::J      ||
-          Opc == Mips::B_MM   || Opc == Mips::BEQZC_MM ||
+          Opc == Mips::J_MM   || Opc == Mips::B_MM   || Opc == Mips::BEQZC_MM ||
           Opc == Mips::BNEZC_MM || Opc == Mips::BEQC || Opc == Mips::BNEC   ||
           Opc == Mips::BLTC   || Opc == Mips::BGEC   || Opc == Mips::BLTUC  ||
           Opc == Mips::BGEUC  || Opc == Mips::BGTZC  || Opc == Mips::BLEZC  ||
           Opc == Mips::BGEZC  || Opc == Mips::BLTZC  || Opc == Mips::BEQZC  ||
           Opc == Mips::BNEZC  || Opc == Mips::BEQZC64 || Opc == Mips::BNEZC64 ||
           Opc == Mips::BEQC64 || Opc == Mips::BNEC64 || Opc == Mips::BGEC64 ||
           Opc == Mips::BGEUC64 || Opc == Mips::BLTC64 || Opc == Mips::BLTUC64 ||
           Opc == Mips::BGTZC64 || Opc == Mips::BGEZC64 ||

llvm/trunk/test/CodeGen/Mips/longbranch.ll

 ; MICROMIPS-NEXT:    sw16 $3, 0($2)
 ; MICROMIPS-NEXT:  $BB0_4: # %end
 ; MICROMIPS-NEXT:    jrc $ra
 ;
 ; MICROMIPSSTATIC-LABEL: test1:
 ; MICROMIPSSTATIC:       # %bb.0: # %entry
 ; MICROMIPSSTATIC-NEXT:    bnezc $4, $BB0_2
 ; MICROMIPSSTATIC-NEXT:  # %bb.1: # %entry
-; MICROMIPSSTATIC-NEXT:    j $BB0_4
-; MICROMIPSSTATIC-NEXT:    nop
-; MICROMIPSSTATIC-NEXT:  $BB0_2: # %entry
 ; MICROMIPSSTATIC-NEXT:    j $BB0_3
 ; MICROMIPSSTATIC-NEXT:    nop
-; MICROMIPSSTATIC-NEXT:  $BB0_3: # %then
+; MICROMIPSSTATIC-NEXT:  $BB0_2: # %then
 ; MICROMIPSSTATIC-NEXT:    lui $1, %hi(x)
 ; MICROMIPSSTATIC-NEXT:    li16 $2, 1
 ; MICROMIPSSTATIC-NEXT:    sw $2, %lo(x)($1)
-; MICROMIPSSTATIC-NEXT:  $BB0_4: # %end
+; MICROMIPSSTATIC-NEXT:  $BB0_3: # %end
 ; MICROMIPSSTATIC-NEXT:    jrc $ra
 ;
 ; MICROMIPSR6STATIC-LABEL: test1:
 ; MICROMIPSR6STATIC:       # %bb.0: # %entry
 ; MICROMIPSR6STATIC-NEXT:    bnezc $4, $BB0_2
 ; MICROMIPSR6STATIC-NEXT:  # %bb.1: # %entry
 ; MICROMIPSR6STATIC-NEXT:    bc $BB0_3
 ; MICROMIPSR6STATIC-NEXT:  $BB0_2: # %then