================
@@ -0,0 +1,138 @@
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+lse128 < %s \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+lse128 < %s \
+// RUN:        | llvm-objdump -d --mattr=+lse128 - | FileCheck %s 
--check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+lse128 < %s \
+// RUN:   | llvm-objdump -d --mattr=-lse128 - | FileCheck %s 
--check-prefix=CHECK-UNKNOWN
+// Disassemble encoding and check the re-encoding (-show-encoding) matches.
+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+lse128 < %s \
+// RUN:        | sed '/.text/d' | sed 's/.*encoding: //g' \
+// RUN:        | llvm-mc -triple=aarch64 -mattr=+lse128 -disassemble 
-show-encoding \
+// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+
+
+
+ldclrp   x1, x2, [x11]
+// CHECK-INST: ldclrp x1, x2, [x11]
+// CHECK-ENCODING: encoding: [0x61,0x11,0x22,0x19]
+// CHECK-ERROR: :[[@LINE-3]]:1: error: instruction requires: lse128
+// CHECK-UNKNOWN:  19221161 <unknown>
+ldclrp   x21, x22, [sp]
----------------
tmatheson-arm wrote:

No spaces between cases?

https://github.com/llvm/llvm-project/pull/146329
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