File: fast-tail-call.ll

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llvm-toolchain-21 1%3A21.1.7-1
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; RUN: llc -mtriple=thumbv7-linux-gnueabi -O0 < %s | FileCheck %s
; RUN: llc -mtriple=thumbv8m.base-arm-none-eabi -filetype=obj < %s

; Primarily a non-crash test: Thumbv7 Linux does not have FastISel support,
; which led (via a convoluted route) to DAG nodes after a TC_RETURN that
; couldn't possibly work.

declare ptr @g(ptr)

define ptr @f(ptr %a) {
entry:
  %0 = tail call ptr @g(ptr %a)
  ret ptr %0
; CHECK: b g
; CHECK-NOT: ldr
; CHECK-NOT: str
}