forked from OSchip/llvm-project
71 lines
1.9 KiB
ArmAsm
71 lines
1.9 KiB
ArmAsm
## This test verifies that the pair adrp + ldr is relaxed/not relaxed
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## depending on the target symbol properties.
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# REQUIRES: aarch64
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# RUN: rm -rf %t && split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=aarch64 %t/symbols.s -o %t/symbols.o
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# RUN: ld.lld -shared -T %t/linker.t %t/symbols.o -o %t/symbols.so
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# RUN: llvm-objdump --no-show-raw-insn -d %t/symbols.so | \
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# RUN: FileCheck --check-prefix=LIB %s
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## Symbol 'hidden_sym' is nonpreemptible, the relaxation should be applied.
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LIB: adrp x0
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LIB-NEXT: add x0
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## Symbol 'global_sym' is preemptible, no relaxations should be applied.
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LIB-NEXT: adrp x1
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LIB-NEXT: ldr x1
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## Symbol 'undefined_sym' is undefined, no relaxations should be applied.
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LIB-NEXT: adrp x2
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LIB-NEXT: ldr x2
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## Symbol 'ifunc_sym' is STT_GNU_IFUNC, no relaxations should be applied.
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LIB-NEXT: adrp x3
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LIB-NEXT: ldr x3
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# RUN: ld.lld -T %t/linker.t -z undefs %t/symbols.o -o %t/symbols
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# RUN: llvm-objdump --no-show-raw-insn -d %t/symbols | \
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# RUN: FileCheck --check-prefix=EXE %s
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## Symbol 'global_sym' is nonpreemptible, the relaxation should be applied.
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EXE: adrp x1
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EXE-NEXT: add x1
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## The linker script ensures that .rodata and .text are sufficiently (>1MB)
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## far apart so that the adrp + ldr pair cannot be relaxed to adr + nop.
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#--- linker.t
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SECTIONS {
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.rodata 0x1000: { *(.rodata) }
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.text 0x300100: { *(.text) }
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}
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#--- symbols.s
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.rodata
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.hidden hidden_sym
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hidden_sym:
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.word 10
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.global global_sym
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global_sym:
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.word 10
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.text
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.type ifunc_sym STT_GNU_IFUNC
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.hidden ifunc_sym
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ifunc_sym:
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nop
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.global _start
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_start:
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adrp x0, :got:hidden_sym
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ldr x0, [x0, #:got_lo12:hidden_sym]
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adrp x1, :got:global_sym
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ldr x1, [x1, #:got_lo12:global_sym]
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adrp x2, :got:undefined_sym
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ldr x2, [x2, #:got_lo12:undefined_sym]
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adrp x3, :got:ifunc_sym
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ldr x3, [x3, #:got_lo12:ifunc_sym]
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