Index: lib/Target/AMDGPU/SIInstrFormats.td
===================================================================
--- lib/Target/AMDGPU/SIInstrFormats.td
+++ lib/Target/AMDGPU/SIInstrFormats.td
@@ -433,10 +433,10 @@
 
 class VOPCe <bits<8> op> : Enc32 {
   bits<9> src0;
-  bits<8> vsrc1;
+  bits<8> src1;
 
   let Inst{8-0} = src0;
-  let Inst{16-9} = vsrc1;
+  let Inst{16-9} = src1;
   let Inst{24-17} = op;
   let Inst{31-25} = 0x3e;
 }
Index: test/MC/Disassembler/AMDGPU/vopc_vi.txt
===================================================================
--- /dev/null
+++ test/MC/Disassembler/AMDGPU/vopc_vi.txt
@@ -0,0 +1,26 @@
+# RUN: llvm-mc -arch=amdgcn -mcpu=tonga -disassemble -show-encoding < %s | FileCheck %s -check-prefix=VI
+
+# VI:   v_cmp_lt_f32_e32 vcc, s2, v4 ; encoding: [0x02,0x08,0x82,0x7c]
+0x02 0x08 0x82 0x7c
+
+# VI:   v_cmp_lt_f32_e32 vcc, 0, v4 ; encoding: [0x80,0x08,0x82,0x7c]
+0x80 0x08 0x82 0x7c
+
+# VI:   v_cmp_lt_f32_e32 vcc, v2, v4 ; encoding: [0x02,0x09,0x82,0x7c]
+0x02 0x09 0x82 0x7c
+
+# VI:   v_cmp_f_f32_e32 vcc, v2, v4 ; encoding: [0x02,0x09,0x80,0x7c]
+0x02 0x09 0x80 0x7c
+
+# VI:   v_cmp_lt_f32_e32 vcc, v2, v4 ; encoding: [0x02,0x09,0x82,0x7c]
+0x02 0x09 0x82 0x7c
+
+# VI:   v_cmp_f_f64_e32 vcc, v[2:3], v[4:5] ; encoding: [0x02,0x09,0xc0,0x7c]
+0x02 0x09 0xc0 0x7c
+
+# VI:   v_cmp_f_i32_e32 vcc, v2, v4 ; encoding: [0x02,0x09,0x80,0x7d]
+0x02 0x09 0x80 0x7d
+
+# VI:   v_cmp_f_i64_e32 vcc, v[2:3], v[4:5] ; encoding: [0x02,0x09,0xc0,0x7d]
+0x02 0x09 0xc0 0x7d
+