-// RUN: not llvm-mc -arch=amdgcn -mcpu=tahiti %s 2>&1 | FileCheck -check-prefix=GCN -check-prefix=SI %s
-// RUN: not llvm-mc -arch=amdgcn -mcpu=hawaii %s 2>&1 | FileCheck -check-prefix=GCN -check-prefix=CI %s
-// RUN: not llvm-mc -arch=amdgcn -mcpu=tonga %s 2>&1 | FileCheck -check-prefix=GCN -check-prefix=VI %s
+// RUN: not llvm-mc -arch=amdgcn -mcpu=tahiti -show-encoding %s 2>&1 | FileCheck -check-prefix=SI -check-prefix=GCN %s
+// RUN: not llvm-mc -arch=amdgcn -mcpu=hawaii -show-encoding %s | FileCheck -check-prefix=CI %s
+// RUN: not llvm-mc -arch=amdgcn -mcpu=tonga -show-encoding %s | FileCheck -check-prefix=VI %s
+
+// Add a different RUN line for the failing checks, because when stderr and stdout are mixed the
+// order things are printed is not deterministic.
+// RUN: not llvm-mc -arch=amdgcn -mcpu=hawaii -show-encoding %s 2>&1 | FileCheck -check-prefix=GCN %s
+// RUN: not llvm-mc -arch=amdgcn -mcpu=tonga -show-encoding %s 2>&1 | FileCheck -check-prefix=GCN %s
s_mov_b64 flat_scratch, -1
// SI: error: invalid operand for instruction
-// CI-NOT: error
-// VI-NOT: error
+// CI: s_mov_b64 flat_scratch, -1 ; encoding: [0xc1,0x04,0xe8,0xbe]
+// VI: s_mov_b64 flat_scratch, -1 ; encoding: [0xc1,0x01,0xe6,0xbe]
s_mov_b32 flat_scratch_lo, -1
// SI: error: invalid operand for instruction
-// CI-NOT: error
-// VI-NOT: error
+// CI: s_mov_b32 flat_scratch_lo, -1 ; encoding: [0xc1,0x03,0xe8,0xbe]
+// VI: s_mov_b32 flat_scratch_lo, -1 ; encoding: [0xc1,0x00,0xe6,0xbe]
s_mov_b32 flat_scratch_hi, -1
// SI: error: invalid operand for instruction
-// CI-NOT: error
-// VI-NOT: error
+// CI: s_mov_b32 flat_scratch_hi, -1 ; encoding: [0xc1,0x03,0xe9,0xbe]
+// VI: s_mov_b32 flat_scratch_hi, -1 ; encoding: [0xc1,0x00,0xe7,0xbe]
s_mov_b64 flat_scratch_lo, -1