Teach ARM/MC/ELF to handle R_ARM_JUMP24 relocation type for conditional jumps.

(yes, this is different from R_ARM_CALL)

- Adds a new method getARMBranchTargetOpValue() which handles the
  necessary distinction between the conditional and unconditional br/bl
  needed for ARM/ELF

At least for ARM mode, the needed fixup for conditional versus unconditional
br/bl is identical, but the ARM docs and existing ARM tools expect this
reloc type...

Added a few FIXME's for future naming fixups in ARMInstrInfo.td

llvm-svn: 124895

1 files changed, 6 insertions, 3 deletions

diff --git a/llvm/lib/Target/ARM/ARMFixupKinds.h b/llvm/lib/Target/ARM/ARMFixupKinds.h
index 9425f222613..3d175e38690 100644
--- a/llvm/lib/Target/ARM/ARMFixupKinds.h
+++ b/llvm/lib/Target/ARM/ARMFixupKinds.h
@@ -40,9 +40,12 @@ enum Fixups {
   // fixup_t2_adr_pcrel_12 - 12-bit PC relative relocation for the ADR
   // instruction.
   fixup_t2_adr_pcrel_12,
-  // fixup_arm_branch - 24-bit PC relative relocation for direct branch
-  // instructions.
-  fixup_arm_branch,
+  // fixup_arm_condbranch - 24-bit PC relative relocation for conditional branch
+  // instructions. 
+  fixup_arm_condbranch,
+  // fixup_arm_uncondbranch - 24-bit PC relative relocation for 
+  // branch instructions. (unconditional)
+  fixup_arm_uncondbranch,
   // fixup_t2_condbranch - 20-bit PC relative relocation for Thumb2 direct
   // uconditional branch instructions.
   fixup_t2_condbranch,