25 lines
808 B
LLVM
25 lines
808 B
LLVM
; RUN: llc -o - %s | FileCheck %s
|
|
target triple="aarch64--"
|
|
|
|
declare void @somefunc()
|
|
define preserve_mostcc void @test_ccmismatch_notail() {
|
|
; Ensure that no tail call is used here, as the called function somefunc does
|
|
; not preserve enough registers for preserve_mostcc.
|
|
; CHECK-LABEL: test_ccmismatch_notail:
|
|
; CHECK-NOT: b somefunc
|
|
; CHECK: bl somefunc
|
|
tail call void @somefunc()
|
|
ret void
|
|
}
|
|
|
|
declare preserve_mostcc void @some_preserve_most_func()
|
|
define void @test_ccmismatch_tail() {
|
|
; We can perform a tail call here, because some_preserve_most_func preserves
|
|
; all registers necessary for test_ccmismatch_tail.
|
|
; CHECK-LABEL: test_ccmismatch_tail:
|
|
; CHECK-NOT: bl some_preserve_most_func
|
|
; CHECK: b some_preserve_most_func
|
|
tail call preserve_mostcc void @some_preserve_most_func()
|
|
ret void
|
|
}
|