AMDGPU: Make i32 uaddo/usubo legal

llvm-svn: 293514
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 4d17746..89d3a72 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -196,6 +196,9 @@
   setOperationAction(ISD::BR_CC, MVT::f32, Expand);
   setOperationAction(ISD::BR_CC, MVT::f64, Expand);
 
+  setOperationAction(ISD::UADDO, MVT::i32, Legal);
+  setOperationAction(ISD::USUBO, MVT::i32, Legal);
+
   // We only support LOAD/STORE and vector manipulation ops for vectors
   // with > 4 elements.
   for (MVT VT : {MVT::v8i32, MVT::v8f32, MVT::v16i32, MVT::v16f32, MVT::v2i64, MVT::v2f64}) {