44 lines
1.2 KiB
ArmAsm
44 lines
1.2 KiB
ArmAsm
# REQUIRES: aarch64
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# RUN: rm -rf %t; split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/foo.s -o %t/foo.o
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# RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/bar.s -o %t/bar.o
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# RUN: %lld -dylib -arch arm64 -lSystem -o %t/out %t/foo.o %t/bar.o
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# RUN: llvm-objdump --macho --syms %t/out | FileCheck %s
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# CHECK: _bar.thunk.0
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## Regression test for PR59259. Previously, we neglected to check section
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## alignments when deciding when to create thunks.
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## If we ignore alignment, the total size of _spacer1 + _spacer2 below is just
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## under the limit at which we attempt to insert thunks between the spacers.
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## However, with alignment accounted for, their total size ends up being
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## 0x8000000, which is just above the max forward branch range, making thunk
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## insertion necessary. Thus, not accounting for alignment led to an error.
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#--- foo.s
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_foo:
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b _bar
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## Size of a `b` instruction.
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.equ callSize, 4
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## Refer to `slop` in TextOutputSection::finalize().
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.equ slopSize, 12 * 256
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_spacer1:
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.space 0x4000000 - slopSize - 2 * callSize - 1
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.subsections_via_symbols
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#--- bar.s
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.globl _bar
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.p2align 14
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_spacer2:
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.space 0x4000000
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_bar:
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ret
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.subsections_via_symbols
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