derek.holloway
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61 lines
1.2 KiB
ArmAsm
61 lines
1.2 KiB
ArmAsm
# REQUIRES: x86
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# This test verifies that garbage-collection is correctly garbage collecting
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# unused sections when the symbol of the unused section is only referred by
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# an unused PROVIDE symbol.
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# RUN: rm -rf %t && split-file %s %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
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# RUN: ld.lld -o a_nogc a.o -T script.t
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# RUN: llvm-nm a_nogc | FileCheck -check-prefix=NOGC %s
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# RUN: ld.lld -o a_gc a.o --gc-sections --print-gc-sections -T script.t | FileCheck --check-prefix=GC_LINK %s
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# RUN: llvm-nm a_gc | FileCheck -check-prefix=GC %s
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NOGC-NOT: another_unused
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NOGC: another_used
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NOGC: bar
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NOGC: baz
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NOGC: baz_ref
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NOGC: foo
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NOGC-NOT: unused
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NOGC: used
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GC_LINK: removing unused section a.o:(.text.bar)
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GC-NOT: another_unused
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GC: another_used
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GC-NOT: bar
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GC: baz
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GC: baz_ref
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GC: foo
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GC-NOT: unused
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GC: used
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#--- a.s
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.global _start
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_start:
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call foo
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call used
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.section .text.foo,"ax",@progbits
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foo:
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nop
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.section .text.bar,"ax",@progbits
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.global bar
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bar:
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nop
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.section .text.baz,"ax",@progbits
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.global baz
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baz:
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nop
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#--- script.t
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PROVIDE(unused = bar + "used");
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PROVIDE("used" = another_used);
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PROVIDE(baz_ref = baz);
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PROVIDE(another_used = baz_ref);
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PROVIDE(another_unused = unused + bar + 0x1);
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