1; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck %s
2
3; Check that the X86 stackmap shadow optimization is only outputting a 3-byte
4; nop here. 8-bytes are requested, but 5 are covered by the code for the call to
5; bar.  However, the frame teardown and the return do not count towards the
6; stackmap shadow as the call return counts as a branch target so must flush
7; the shadow.
8define void @shadow_optimization_test() {
9entry:
10; CHECK-LABEL:  shadow_optimization_test:
11; CHECK:        callq   _bar
12; CHECK-NOT:    nop
13; CHECK:        callq   _bar
14; CHECK:        nop
15; CHECK:        retq
16  call void @bar()
17  tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 0, i32 8)
18  call void @bar()
19  ret void
20}
21
22declare void @llvm.experimental.stackmap(i64, i32, ...)
23declare void @bar()
24