[mips] Refactor BAL instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170954 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/Target/Mips/MipsInstrFormats.td b/lib/Target/Mips/MipsInstrFormats.td
index be86e0b2223..56e784e6b9d 100644
--- a/lib/Target/Mips/MipsInstrFormats.td
+++ b/lib/Target/Mips/MipsInstrFormats.td
@@ -387,6 +387,29 @@ class JALR_FM {
   let Inst{5-0}   = 9;
 }
 
+class BAL_FM {
+  bits<16> offset;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 1;
+  let Inst{25-21} = 0;
+  let Inst{20-16} = 0x11;
+  let Inst{15-0}  = offset;
+}
+
+class BGEZAL_FM<bits<5> funct> {
+  bits<5>  rs;
+  bits<16> offset;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 1;
+  let Inst{25-21} = rs;
+  let Inst{20-16} = funct;
+  let Inst{15-0}  = offset;
+}
+
 //===----------------------------------------------------------------------===//
 //
 //  FLOATING POINT INSTRUCTION FORMATS