diff options
Diffstat (limited to 'test/CodeGen/AArch64/regress-tail-livereg.ll')
| -rw-r--r-- | test/CodeGen/AArch64/regress-tail-livereg.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/regress-tail-livereg.ll b/test/CodeGen/AArch64/regress-tail-livereg.ll new file mode 100644 index 0000000000..0c7f8cbffa --- /dev/null +++ b/test/CodeGen/AArch64/regress-tail-livereg.ll @@ -0,0 +1,19 @@ +; RUN: llc -verify-machineinstrs -march=aarch64 < %s | FileCheck %s +@var = global void()* zeroinitializer + +declare void @bar() + +define void @foo() { +; CHECK: foo: + %func = load void()** @var + + ; Calling a function encourages @foo to use a callee-saved register, + ; which makes it a natural choice for the tail call itself. But we don't + ; want that: the final "br xN" has to use a temporary or argument + ; register. + call void @bar() + + tail call void %func() +; CHECK: br {{x([0-79]|1[0-8])}} + ret void +}
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