llvm-6502/test/CodeGen/AArch64/regress-tail-livereg.ll
Tim Northover 1a8adcb569 AArch64/ARM64: add another set of tests from AArch64
Another batch with no code changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206381 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-16 11:53:07 +00:00

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LLVM

; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s
; RUN: llc -verify-machineinstrs -mtriple=arm64-apple-ios7.0 -o - %s | FileCheck %s
@var = global void()* zeroinitializer
declare void @bar()
define void @foo() {
; CHECK-LABEL: 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
}