Add Gen IR WHILE.

Add Gen IR WHILE to mark the strucutred region.

Signed-off-by: Luo Xionghu <xionghu.luo@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/backend/src/ir/instruction.cpp b/backend/src/ir/instruction.cpp
index 2d86480e..e4e30ed6 100644
--- a/backend/src/ir/instruction.cpp
+++ b/backend/src/ir/instruction.cpp
@@ -349,7 +349,7 @@ namespace ir {
     {
     public:
       INLINE BranchInstruction(Opcode op, LabelIndex labelIndex, Register predicate, bool inv_pred=false) {
-        GBE_ASSERT(op == OP_BRA || op == OP_IF);
+        GBE_ASSERT(op == OP_BRA || op == OP_IF || op == OP_WHILE);
         this->opcode = op;
         this->predicate = predicate;
         this->labelIndex = labelIndex;
@@ -1721,6 +1721,11 @@ DECL_MEM_FN(GetImageInfoInstruction, uint8_t, getImageIndex(void), getImageIndex
     return internal::BranchInstruction(OP_ENDIF, labelIndex).convert();
   }
 
+  // WHILE
+  Instruction WHILE(LabelIndex labelIndex, Register pred) {
+    return internal::BranchInstruction(OP_WHILE, labelIndex, pred).convert();
+  }
+
   // RET
   Instruction RET(void) {
     return internal::BranchInstruction(OP_RET).convert();