1 files changed, 47 insertions, 0 deletions
diff --git a/test/MC/X86/AlignedBundling/single-inst-bundling.s b/test/MC/X86/AlignedBundling/single-inst-bundling.s
new file mode 100644
index 0000000..c0275f4
--- /dev/null
+++ b/test/MC/X86/AlignedBundling/single-inst-bundling.s
@@ -0,0 +1,47 @@
+# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \
+# RUN:   | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s
+
+# Test simple NOP insertion for single instructions.
+
+  .text
+foo:
+  # Will be bundle-aligning to 16 byte boundaries
+  .bundle_align_mode 4
+  pushq   %rbp
+  pushq   %r14
+  pushq   %rbx
+
+  movl    %edi, %ebx
+  callq   bar
+  movl    %eax, %r14d
+
+  imull   $17, %ebx, %ebp
+# This imull is 3 bytes long and should have started at 0xe, so two bytes
+# of nop padding are inserted instead and it starts at 0x10
+# CHECK:          nop
+# CHECK-NEXT:     10: imull
+
+  movl    %ebx, %edi
+  callq   bar
+  cmpl    %r14d, %ebp
+  jle     .L_ELSE
+# Due to the padding that's inserted before the addl, the jump target
+# becomes farther by one byte.
+# CHECK:         jle 5
+
+  addl    %ebp, %eax
+# CHECK:          nop
+# CHECK-NEXT:     20: addl
+
+  jmp     .L_RET
+.L_ELSE:
+  imull   %ebx, %eax
+.L_RET:
+  ret
+
+# Just sanity checking that data fills don't drive bundling crazy
+  .data
+  .byte 40
+  .byte 98
+
+