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| author | Dimitry Andric <dim@FreeBSD.org> | 2015-12-30 11:46:15 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2015-12-30 11:46:15 +0000 |
| commit | dd58ef019b700900793a1eb48b52123db01b654e (patch) | |
| tree | fcfbb4df56a744f4ddc6122c50521dd3f1c5e196 /test/CodeGen/AArch64/readcyclecounter.ll | |
| parent | 2fe5752e3a7c345cdb59e869278d36af33c13fa4 (diff) | |
Notes
Diffstat (limited to 'test/CodeGen/AArch64/readcyclecounter.ll')
| -rw-r--r-- | test/CodeGen/AArch64/readcyclecounter.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/readcyclecounter.ll b/test/CodeGen/AArch64/readcyclecounter.ll new file mode 100644 index 000000000000..037f11809386 --- /dev/null +++ b/test/CodeGen/AArch64/readcyclecounter.ll @@ -0,0 +1,15 @@ +; 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() |