llvm-project/llvm/test/MC/X86/AlignedBundling/long-nop-pad.s

32 lines
992 B
ArmAsm

# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro %s -o - \
# RUN: | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro -mc-relax-all %s -o - \
# RUN: | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
# Test that long nops are generated for padding where possible.
.text
foo:
.bundle_align_mode 5
# This callq instruction is 5 bytes long
.bundle_lock align_to_end
callq bar
.bundle_unlock
# To align this group to a bundle end, we need a two 10-byte NOPs and a 7-byte NOP.
# CHECK: 0: nop
# CHECK-NEXT: a: nop
# CHECK-NEXT: 14: nop
# CHECK: 1b: callq
# This push instruction is 1 byte long
.bundle_lock align_to_end
push %rax
.bundle_unlock
# To align this group to a bundle end, we need three 10-byte NOPs, and a 1-byte.
# CHECK: 20: nop
# CHECK-NEXT: 2a: nop
# CHECK-NEXT: 34: nop
# CHECK-NEXT: 3e: nop
# CHECK-NEXT: 3f: pushq