1# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro %s -o - \ 2# RUN: | llvm-objdump -d --no-show-raw-insn - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-OPT %s 3# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro -mc-relax-all %s -o - \ 4# RUN: | llvm-objdump -d --no-show-raw-insn - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-RELAX %s 5 6# Test simple NOP insertion for single instructions. 7 8 .text 9foo: 10 # Will be bundle-aligning to 16 byte boundaries 11 .bundle_align_mode 4 12 pushq %rbp 13 pushq %r14 14 pushq %rbx 15 16 movl %edi, %ebx 17 callq bar 18 movl %eax, %r14d 19 20 imull $17, %ebx, %ebp 21# This imull is 3 bytes long and should have started at 0xe, so two bytes 22# of nop padding are inserted instead and it starts at 0x10 23# CHECK: nop 24# CHECK-NEXT: 10: imull 25 26 movl %ebx, %edi 27 callq bar 28 cmpl %r14d, %ebp 29# CHECK-RELAX: nopl 30 jle .L_ELSE 31# Due to the padding that's inserted before the addl, the jump target 32# becomes farther by one byte. 33# CHECK-OPT: jle 0x24 34# CHECK-RELAX: jle 0x2d 35 36 addl %ebp, %eax 37# CHECK-OPT: nop 38# CHECK-OPT-NEXT:20: addl 39# CHECK-RELAX: 26: addl 40 41 jmp .L_RET 42.L_ELSE: 43 imull %ebx, %eax 44.L_RET: 45 ret 46 47# Just sanity checking that data fills don't drive bundling crazy 48 .data 49 .byte 40 50 .byte 98 51 52 53