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llvm-mirror/test/CodeGen/PowerPC/longcall.ll
Hal Finkel 62419dd0e2 [PowerPC] Add support for -mlongcall
The "long call" option forces the use of the indirect calling sequence for all
calls (even those that don't really need it). GCC provides this option; This is
helpful, under certain circumstances, for building very-large binaries, and
some other specialized use cases.

Fixes PR19098.

llvm-svn: 280040
2016-08-30 00:59:23 +00:00

27 lines
588 B
LLVM

; RUN: llc < %s | FileCheck %s
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
; Function Attrs: nounwind
define void @bar() local_unnamed_addr #0 {
entry:
tail call void @foo() #1
ret void
; CHECK-LABEL: @bar
; 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 }