| ; 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() |
