1 ; RUN: llc -mtriple=aarch64-unknown-unknown -asm-verbose=false < %s |\ 2 ; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=PERFMON 3 ; RUN: llc -mtriple=aarch64-unknown-unknown -mattr=-perfmon -asm-verbose=false < %s |\ 4 ; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=NOPERFMON 5 6 define i64 @test_readcyclecounter() nounwind { 7 ; CHECK-LABEL: test_readcyclecounter: 8 ; PERFMON-NEXT: mrs x0, PMCCNTR_EL0 9 ; NOPERFMON-NEXT: mov x0, xzr 10 ; CHECK-NEXT: ret 11 %tmp0 = call i64 @llvm.readcyclecounter() 12 ret i64 %tmp0 13 } 14 15 declare i64 @llvm.readcyclecounter() 16
