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Diffstat (limited to 'test/MC/X86/AlignedBundling/pad-align-to-bundle-end.s')
| -rw-r--r-- | test/MC/X86/AlignedBundling/pad-align-to-bundle-end.s | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/MC/X86/AlignedBundling/pad-align-to-bundle-end.s b/test/MC/X86/AlignedBundling/pad-align-to-bundle-end.s new file mode 100644 index 0000000000..6ca4046f0c --- /dev/null +++ b/test/MC/X86/AlignedBundling/pad-align-to-bundle-end.s @@ -0,0 +1,33 @@ +# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \ +# RUN: | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s + +# Test some variations of padding to the end of a bundle. + + .text +foo: + .bundle_align_mode 4 + +# Each of these callq instructions is 5 bytes long + callq bar + callq bar + .bundle_lock align_to_end + callq bar + .bundle_unlock +# To align this group to a bundle end, we need a 1-byte NOP. +# CHECK: a: nop +# CHECK-NEXT: b: callq + + callq bar + callq bar + .bundle_lock align_to_end + callq bar + callq bar + .bundle_unlock +# Here we have to pad until the end of the *next* boundary because +# otherwise the group crosses a boundary. +# CHECK: 1a: nop +# The nop sequence may be implemented as one instruction or many, but if +# it's one instruction, that instruction cannot itself cross the boundary. +# CHECK: 20: nop +# CHECK-NEXT: 26: callq +# CHECK-NEXT: 2b: callq |