Index: lib/Target/AMDGPU/SIRegisterInfo.td
===================================================================
--- lib/Target/AMDGPU/SIRegisterInfo.td
+++ lib/Target/AMDGPU/SIRegisterInfo.td
@@ -459,15 +459,15 @@
 // Requires 2 s_mov_b64 to copy
 let CopyCost = 2 in {
 
-def SGPR_128 : RegisterClass<"AMDGPU", [v4i32, v4f32, v16i8, v2i64], 32, (add SGPR_128Regs)> {
+def SGPR_128 : RegisterClass<"AMDGPU", [v4i32, v4f32, v2i64], 32, (add SGPR_128Regs)> {
   let AllocationPriority = 10;
 }
 
-def TTMP_128 : RegisterClass<"AMDGPU", [v4i32, v4f32, v16i8, v2i64], 32, (add TTMP_128Regs)> {
+def TTMP_128 : RegisterClass<"AMDGPU", [v4i32, v4f32, v2i64], 32, (add TTMP_128Regs)> {
   let isAllocatable = 0;
 }
 
-def SReg_128 : RegisterClass<"AMDGPU", [v4i32, v4f32, v16i8, v2i64, v2f64], 32,
+def SReg_128 : RegisterClass<"AMDGPU", [v4i32, v4f32, v2i64, v2f64], 32,
   (add SGPR_128, TTMP_128)> {
   let AllocationPriority = 10;
 }