# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro %s -o - \ # RUN: | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck -check-prefix=CHECK -check-prefix=CHECK-OPT %s # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro -mc-relax-all %s -o - \ # RUN: | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck -check-prefix=CHECK -check-prefix=CHECK-RELAX %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 # CHECK-RELAX: nopl jle .L_ELSE # Due to the padding that's inserted before the addl, the jump target # becomes farther by one byte. # CHECK-OPT: jle 5 # CHECK-RELAX: jle 7 addl %ebp, %eax # CHECK-OPT: nop # CHECK-OPT-NEXT:20: addl # CHECK-RELAX: 26: 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