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llvm-6502/test/MC/MachO/relax-recompute-align.s
Daniel Dunbar f08fde41f3 MC/Mach-O: Implement initial support for relaxation.
- The implementation is currently very brain dead and inefficient, but I have a
   clear plan on how to fix it.

 - The good news is, it works and correctly assembles 403.gcc (when built with
   Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g',
   the resulting binary is exactly equivalent to that when built with the system
   assembler. So it probably works! :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12 22:07:14 +00:00

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ArmAsm

// RUN: llvm-mc -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
// FIXME: This is a horrible way of checking the output, we need an llvm-mc
// based 'otool'.
// This is a case where llvm-mc computes a better layout than Darwin 'as'. This
// issue is that after the first jmp slides, the .align size must be
// recomputed -- otherwise the second jump will appear to be out-of-range for a
// 1-byte jump.
// CHECK: # Section 0
// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
// CHECK: ('address', 0)
// CHECK: ('size', 306)
// CHECK: ('offset', 324)
// CHECK: ('alignment', 4)
// CHECK: ('reloc_offset', 0)
// CHECK: ('num_reloc', 0)
// CHECK: ('flags', 0x80000400)
// CHECK: ('reserved1', 0)
// CHECK: ('reserved2', 0)
// CHECK: ),
L0:
.space 0x8a, 0x90
jmp L0
.space (0xb3 - 0x8f), 0x90
jle L2
.space (0xcd - 0xb5), 0x90
.align 4, 0x90
L1:
.space (0x130 - 0xd0),0x90
jl L1
L2:
.zerofill __DATA,__bss,_sym,4,2