56e41fcf50
We currently don't handle tail calls in fast-isel but we continue with the lowering when -mlongcall is specified and lower the calls normally. We should defer to SDISel for this so that it is lowered correctly. Differential revision: https://reviews.llvm.org/D123997
42 lines
907 B
LLVM
42 lines
907 B
LLVM
; RUN: llc < %s | FileCheck %s
|
|
; RUN: llc --fast-isel < %s | FileCheck %s
|
|
target datalayout = "E-m:e-i64:64-n32:64"
|
|
target triple = "powerpc64-unknown-linux-gnu"
|
|
|
|
; Function Attrs: nounwind
|
|
define void @tail() local_unnamed_addr #0 {
|
|
entry:
|
|
tail call void @foo() #1
|
|
ret void
|
|
|
|
; CHECK-LABEL: @tail
|
|
; CHECK: ld [[FD:[0-9]+]], .LC0@toc@l({{[0-9]+}})
|
|
; CHECK: ld [[ADDR:[0-9]+]], 0([[FD]])
|
|
; CHECK: mtctr [[ADDR]]
|
|
; CHECK: bctrl
|
|
; CHECK-NOT: bl foo
|
|
; CHECK: blr
|
|
}
|
|
|
|
define void @notail() local_unnamed_addr #0 {
|
|
entry:
|
|
call void @foo() #1
|
|
ret void
|
|
|
|
; CHECK-LABEL: @notail
|
|
; CHECK: ld [[FD:[0-9]+]], .LC0@toc@l({{[0-9]+}})
|
|
; CHECK: ld [[ADDR:[0-9]+]], 0([[FD]])
|
|
; CHECK: mtctr [[ADDR]]
|
|
; CHECK: bctrl
|
|
; CHECK-NOT: bl foo
|
|
; CHECK: blr
|
|
}
|
|
|
|
; CHECK: .tc foo
|
|
|
|
declare void @foo() local_unnamed_addr
|
|
|
|
attributes #0 = { nounwind "target-cpu"="ppc64" "target-features"="+longcall" }
|
|
attributes #1 = { nounwind }
|
|
|