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diff --git a/test/MC/AArch64/SVE/pfirst.s b/test/MC/AArch64/SVE/pfirst.s
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+++ b/test/MC/AArch64/SVE/pfirst.s
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+// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sve < %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-prefix=CHECK-ERROR
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sve < %s \
+// RUN: | llvm-objdump -d -mattr=+sve - | FileCheck %s --check-prefix=CHECK-INST
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sve < %s \
+// RUN: | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+
+pfirst p0.b, p15, p0.b
+// CHECK-INST: pfirst p0.b, p15, p0.b
+// CHECK-ENCODING: [0xe0,0xc1,0x58,0x25]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: e0 c1 58 25 <unknown>
+
+pfirst p15.b, p15, p15.b
+// CHECK-INST: pfirst p15.b, p15, p15.b
+// CHECK-ENCODING: [0xef,0xc1,0x58,0x25]
+// CHECK-ERROR: instruction requires: sve
+// CHECK-UNKNOWN: ef c1 58 25 <unknown>