Index: lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
===================================================================
--- lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -2831,6 +2831,7 @@
     {"tlb-rmi", {AArch64::FeatureTLB_RMI}},
     {"pan-rwv", {AArch64::FeaturePAN_RWV}},
     {"ccpp", {AArch64::FeatureCCPP}},
+    {"sve", {AArch64::FeatureSVE}},
     // FIXME: Unsupported extensions
     {"pan", {}},
     {"lor", {}},
Index: test/MC/AArch64/SVE/directive-arch.s
===================================================================
--- /dev/null
+++ test/MC/AArch64/SVE/directive-arch.s
@@ -0,0 +1,6 @@
+// RUN: llvm-mc -triple=aarch64 < %s | FileCheck %s
+
+.arch armv8-a+sve
+
+ptrue   p0.b, pow2
+// CHECK: ptrue   p0.b, pow2