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; RUN: llc -mtriple=aarch64-unknown-unknown -asm-verbose=false < %s |\
; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=PERFMON
; RUN: llc -mtriple=aarch64-unknown-unknown -mattr=-perfmon -asm-verbose=false < %s |\
; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=NOPERFMON
define i64 @test_readcyclecounter() nounwind {
; CHECK-LABEL: test_readcyclecounter:
; PERFMON-NEXT: mrs x0, PMCCNTR_EL0
; NOPERFMON-NEXT: mov x0, xzr
; CHECK-NEXT: ret
%tmp0 = call i64 @llvm.readcyclecounter()
ret i64 %tmp0
}
declare i64 @llvm.readcyclecounter()
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