Add a test that .align directives on capable processors use long NOPs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176490 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/MC/X86/x86_long_nop.s b/test/MC/X86/x86_long_nop.s
new file mode 100644 (file)
index 0000000..f8e7642
--- /dev/null
+++ b/test/MC/X86/x86_long_nop.s
@@ -0,0 +1,12 @@
+# RUN: llvm-mc -filetype=obj -arch=x86 -mcpu=i686 %s | llvm-objdump -d -no-show-raw-insn - | FileCheck %s
+
+# Ensure alignment directives also emit sequences of 15-byte NOPs on processors
+# capable of using long NOPs.
+inc %eax
+.align 32
+inc %eax
+# CHECK: 0:  inc
+# CHECK-NEXT: 1:  nop
+# CHECK-NEXT: 10:  nop
+# CHECK-NEXT: 1f:  nop
+# CHECK-NEXT: 20:  inc