Add a test case for PR14750.

This was fixed by r174402.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174405 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/X86/2008-08-31-EH_RETURN64.ll

@@ -1,10 +1,15 @@
 ; Check that eh_return & unwind_init were properly lowered
-; RUN: llc < %s | grep %rbp | count 7
-; RUN: llc < %s | grep %rcx | count 3
+; RUN: llc < %s -verify-machineinstrs | FileCheck %s
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
 target triple = "x86_64-unknown-linux-gnu"
 
+; CHECK: test
+; CHECK: pushq %rbp
+; CHECK: movq %rsp, %rbp
+; CHECK: popq %rbp
+; CHECK: movq %rcx, %rsp
+; CHECK: ret # eh_return, addr: %rcx
 define i8* @test(i64 %a, i8* %b)  {
 entry:
   call void @llvm.eh.unwind.init()
@@ -15,3 +20,36 @@ entry:
 
 declare void @llvm.eh.return.i64(i64, i8*)
 declare void @llvm.eh.unwind.init()
+
+@b = common global i32 0, align 4
+@a = common global i32 0, align 4
+
+; PR14750
+; This function contains a normal return as well as eh_return.
+; CHECK: _Unwind_Resume_or_Rethrow
+define i32 @_Unwind_Resume_or_Rethrow() nounwind uwtable ssp {
+entry:
+  %0 = load i32* @b, align 4
+  %tobool = icmp eq i32 %0, 0
+  br i1 %tobool, label %if.end, label %if.then
+
+if.then:                                          ; preds = %entry
+  ret i32 0
+
+if.end:                                           ; preds = %entry
+  %call = tail call i32 (...)* @_Unwind_ForcedUnwind_Phase2() nounwind
+  store i32 %call, i32* @a, align 4
+  %tobool1 = icmp eq i32 %call, 0
+  br i1 %tobool1, label %cond.end, label %cond.true
+
+cond.true:                                        ; preds = %if.end
+  tail call void @abort() noreturn nounwind
+  unreachable
+
+cond.end:                                         ; preds = %if.end
+  tail call void @llvm.eh.return.i64(i64 0, i8* null)
+  unreachable
+}
+
+declare i32 @_Unwind_ForcedUnwind_Phase2(...)
+declare void @abort() noreturn