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8af3f965e0
After recognising that a certain narrow instruction might need a relocation to be represented, we used to unconditionally relax it to a Thumb2 instruction to permit this. Unfortunately, some CPUs (e.g. v6m) don't even have most Thumb2 instructions, so we end up emitting a completely invalid instruction. Theoretically, ELF does have relocations for these situations; but they are fairly unusable with such short ranges and the ABI document even says they're documented "for completeness". So an error is probably better there too. rdar://20391953 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234195 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
873 B
ArmAsm
20 lines
873 B
ArmAsm
@ RUN: not llvm-mc -triple thumbv6m-none-macho -filetype=obj -o /dev/null %s 2>&1 | FileCheck --check-prefix=CHECK-ERROR %s
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@ RUN: llvm-mc -triple thumbv7m-none-macho -filetype=obj -o %t %s
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@ RUN: llvm-objdump -d -r -triple thumbv7m-none-macho %t | FileCheck --check-prefix=CHECK-MACHO %s
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@ RUN: llvm-mc -triple thumbv7m-none-eabi -filetype=obj -o %t %s
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@ RUN: llvm-objdump -d -r -triple thumbv7m-none-eabi %t | FileCheck --check-prefix=CHECK-ELF %s
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.global func1
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_func1:
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@ There is no MachO relocation for Thumb1's unconditional branch, so
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@ this is unrepresentable. FIXME: I think ELF could represent this.
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b _func2
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@ CHECK-ERROR: unsupported relocation on symbol
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@ CHECK-MACHO: ff f7 fe bf b.w #-4
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@ CHECK-MACHO-NEXT: ARM_THUMB_RELOC_BR22
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@ CHECK-ELF: ff f7 fe bf b.w #-4
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@ CHECK-ELF-NEXT: R_ARM_THM_JUMP24 _func2
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