test/MC/X86/AlignedBundling/single-inst-bundling.s - Issue 1133723005: Cherry-pick r234714: [MC] Write padding into fragments when -mc-relax-all flag is used

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Issue 1133723005: Cherry-pick r234714: [MC] Write padding into fragments when -mc-relax-all flag is used (Closed) Base URL: http://git.chromium.org/native_client/pnacl-llvm.git@master

Patch Set: Rebase Created 5 years, 7 months ago

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1 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \	1 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \

2 # RUN: \| llvm-objdump -disassemble -no-show-raw-insn - \| FileCheck %s	2 # RUN: \| llvm-objdump -disassemble -no-show-raw-insn - \| FileCheck -check-pref ix=CHECK -check-prefix=CHECK-OPT %s

	3 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mc-relax-all %s -o - \

	4 # RUN: \| llvm-objdump -disassemble -no-show-raw-insn - \| FileCheck -check-pref ix=CHECK -check-prefix=CHECK-RELAX %s

3	5

4 # Test simple NOP insertion for single instructions.	6 # Test simple NOP insertion for single instructions.

5	7

6 .text	8 .text

7 foo:	9 foo:

8 # Will be bundle-aligning to 16 byte boundaries	10 # Will be bundle-aligning to 16 byte boundaries

9 .bundle_align_mode 4	11 .bundle_align_mode 4

10 pushq %rbp	12 pushq %rbp

11 pushq %r14	13 pushq %r14

12 pushq %rbx	14 pushq %rbx

13	15

14 movl %edi, %ebx	16 movl %edi, %ebx

15 callq bar	17 callq bar

16 movl %eax, %r14d	18 movl %eax, %r14d

17	19

18 imull $17, %ebx, %ebp	20 imull $17, %ebx, %ebp

19 # This imull is 3 bytes long and should have started at 0xe, so two bytes	21 # This imull is 3 bytes long and should have started at 0xe, so two bytes

20 # of nop padding are inserted instead and it starts at 0x10	22 # of nop padding are inserted instead and it starts at 0x10

21 # CHECK: nop	23 # CHECK: nop

22 # CHECK-NEXT: 10: imull	24 # CHECK-NEXT: 10: imull

23	25

24 movl %ebx, %edi	26 movl %ebx, %edi

25 callq bar	27 callq bar

26 cmpl %r14d, %ebp	28 cmpl %r14d, %ebp

	29 # CHECK-RELAX: nopl

27 jle .L_ELSE	30 jle .L_ELSE

28 # Due to the padding that's inserted before the addl, the jump target	31 # Due to the padding that's inserted before the addl, the jump target

29 # becomes farther by one byte.	32 # becomes farther by one byte.

30 # CHECK: jle 5	33 # CHECK-OPT: jle 5

	34 # CHECK-RELAX: jle 7

31	35

32 addl %ebp, %eax	36 addl %ebp, %eax

33 # CHECK: nop	37 # CHECK-OPT: nop

34 # CHECK-NEXT: 20: addl	38 # CHECK-OPT-NEXT:20: addl

	39 # CHECK-RELAX: 26: addl

35	40

36 jmp .L_RET	41 jmp .L_RET

37 .L_ELSE:	42 .L_ELSE:

38 imull %ebx, %eax	43 imull %ebx, %eax

39 .L_RET:	44 .L_RET:

40 ret	45 ret

41	46

42 # Just sanity checking that data fills don't drive bundling crazy	47 # Just sanity checking that data fills don't drive bundling crazy

43 .data	48 .data

44 .byte 40	49 .byte 40

45 .byte 98	50 .byte 98

46	51

47	52

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