R600: Add support for GROUP_BARRIER instruction

Reviewed-by: Vincent Lejeune<vljn at ovi.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185161 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/R600/R600Instructions.td

@@ -1499,6 +1499,36 @@ let hasSideEffects = 1 in {
 
   def UINT_TO_FLT_eg : UINT_TO_FLT_Common<0x9C>;
 
+def GROUP_BARRIER : InstR600 <
+    (outs), (ins), "  GROUP_BARRIER", [(int_AMDGPU_barrier_local)], AnyALU>,
+    R600ALU_Word0,
+    R600ALU_Word1_OP2 <0x54> {
+
+  let dst = 0;
+  let dst_rel = 0;
+  let src0 = 0;
+  let src0_rel = 0;
+  let src0_neg = 0;
+  let src0_abs = 0;
+  let src1 = 0;
+  let src1_rel = 0;
+  let src1_neg = 0;
+  let src1_abs = 0;
+  let write = 0;
+  let omod = 0;
+  let clamp = 0;
+  let last = 1;
+  let bank_swizzle = 0;
+  let pred_sel = 0;
+  let update_exec_mask = 0;
+  let update_pred = 0;
+
+  let Inst{31-0}  = Word0;
+  let Inst{63-32} = Word1;
+
+  let ALUInst = 1;
+}
+
   // TRUNC is used for the FLT_TO_INT instructions to work around a
   // perceived problem where the rounding modes are applied differently
   // depending on the instruction and the slot they are in.