File: machine-outliner-tailcalls.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc -verify-machineinstrs -enable-machine-outliner -mtriple=x86_64-apple-darwin < %s | FileCheck %s

@x = common local_unnamed_addr global i32 0, align 4

define i32 @foo0(i32) local_unnamed_addr #0 {
; CHECK-LABEL: _foo0:
; CHECK: jmp
; CHECK-SAME: OUTLINED_FUNCTION_0
; CHECK-NEXT: .cfi_endproc
  store i32 0, ptr @x, align 4, !tbaa !2
  %2 = tail call i32 @ext(i32 1) #2
  ret i32 undef
}

declare i32 @ext(i32) local_unnamed_addr #1

define i32 @foo1(i32) local_unnamed_addr #0 {
; CHECK-LABEL: _foo1:
; CHECK: jmp
; CHECK-SAME: OUTLINED_FUNCTION_0
; CHECK-NEXT: .cfi_endproc
  store i32 0, ptr @x, align 4, !tbaa !2
  %2 = tail call i32 @ext(i32 1) #2
  ret i32 undef
}

attributes #0 = { noredzone nounwind ssp uwtable "frame-pointer"="none" }

!2 = !{!3, !3, i64 0}
!3 = !{!"int", !4, i64 0}
!4 = !{!"omnipotent char", !5, i64 0}
!5 = !{!"Simple C/C++ TBAA"}

; CHECK: OUTLINED_FUNCTION_0:
; CHECK-DAG: movl  $0, (%rax)
; CHECK-NEXT: movl  $1, %edi
; CHECK-NEXT: jmp _ext