1 ; RUN: llc -mtriple=armv7-none-linux-gnueabi < %s | FileCheck %s
2 ; RUN: llc -mtriple=thumbv7-none-linux-gnueabi < %s | FileCheck %s
3 ; RUN: llc -mtriple=armv7-none-linux-gnueabi -mattr=-perfmon < %s | FileCheck %s --check-prefix=CHECK-NO-PERFMON
4 ; RUN: llc -mtriple=armv6-none-linux-gnueabi < %s | FileCheck %s --check-prefix=CHECK-NO-PERFMON
6 ; The performance monitor we're looking for is an ARMv7 extension. It should be
7 ; possible to disable it, but realistically present on at least every v7-A
8 ; processor (but not on v6, at least by default).
10 declare i64 @llvm.readcyclecounter()
12 define i64 @get_count() {
13 %val = call i64 @llvm.readcyclecounter()
16 ; As usual, exact registers only sort of matter but the cycle-count had better
17 ; end up in r0 in the end.
19 ; CHECK: mrc p15, #0, r0, c9, c13, #0
20 ; CHECK: {{movs?}} r1, #0
22 ; CHECK-NO-PERFMON: {{movs?}} r0, #0
23 ; CHECK-NO-PERFMON: {{movs?}} r1, #0