X86: Check output of x86 copysignl testcase.

This makes the changes in an upcoming patch visible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242106 91177308-0d34-0410-b5e6-96231b3b80d8

Author: MatzeB

test/CodeGen/X86/pr13577.ll

@@ -1,5 +1,20 @@
-; RUN: llc < %s -march=x86-64
+; RUN: llc < %s -march=x86-64 | FileCheck %s
 
+; CHECK-LABEL: LCPI0_0:
+; CHECK-NEXT: .long 4286578688
+; CHECK-LABEL: LCPI0_1:
+; CHECK-NEXT: .long 2139095040
+
+; CHECK-LABEL: foo:
+; CHECK: movq {{.*}}, %rax
+; CHECK: shlq $48, %rax
+; CHECK: sets %al
+; CHECK: testb %al, %al
+; CHECK: flds LCPI0_0(%rip)
+; CHECK: flds LCPI0_1(%rip)
+; CHECK: fcmovne %st(1), %st(0)
+; CHECK: fstp %st(1)
+; CHECK: retq
 define x86_fp80 @foo(x86_fp80 %a) {
   %1 = tail call x86_fp80 @copysignl(x86_fp80 0xK7FFF8000000000000000, x86_fp80 %a) nounwind readnone
   ret x86_fp80 %1