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75 lines
2.4 KiB
75 lines
2.4 KiB
# REQUIRES: x86
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# RUN: llvm-mc -triple=x86_64-windows-gnu %s -filetype=obj -o %t1.obj
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# RUN: llvm-mc -triple=x86_64-windows-gnu %S/Inputs/associative-comdat-mingw-2.s -filetype=obj -o %t2.obj
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# RUN: lld-link -lldmingw -entry:main %t1.obj %t2.obj -out:%t.gc.exe -verbose
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# RUN: llvm-readobj --sections %t.gc.exe | FileCheck %s
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# CHECK: Sections [
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# CHECK: Section {
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# CHECK: Number: 2
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# CHECK-LABEL: Name: .rdata (2E 72 64 61 74 61 00 00)
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# This is the critical check to show that only *one* definition of
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# .xdata$foo was retained. This *must* be 0x24 (0x4 for the .xdata
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# section and 0x20 for the .ctors/.dtors headers/ends).
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# Make sure that no other .xdata sections get included, which would
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# increase the size here.
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# CHECK-NEXT: VirtualSize: 0x24
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.text
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.def main;
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.scl 2;
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.type 32;
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.endef
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.globl main
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.p2align 4, 0x90
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main:
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call foo
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retq
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# Defines .text$foo (which has a leader symbol and is referenced like
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# normally), and .xdata$foo (which lacks a leader symbol, which normally
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# would be declared associative to the symbol foo).
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# .xdata$foo should be implicitly treated as associative to foo and brought
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# in, while .xdata$bar, implicitly associative to bar, not included, and
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# .xdata$baz not included since there's no symbol baz.
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# GNU binutils ld doesn't do this at all, but always includes all .xdata/.pdata
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# comdat sections, even if --gc-sections is used.
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.section .xdata$foo,"dr"
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.linkonce discard
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.p2align 3
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.long 42
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.section .xdata$bar,"dr"
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.linkonce discard
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.p2align 3
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.long 43
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.section .xdata$baz,"dr"
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.linkonce discard
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.p2align 3
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.long 44
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.def foo;
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.scl 2;
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.type 32;
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.endef
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.section .text$foo,"xr",discard,foo
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.globl foo
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.p2align 4
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foo:
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ret
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.def bar;
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.scl 2;
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.type 32;
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.endef
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.section .text$bar,"xr",discard,bar
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.globl bar
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.p2align 4
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bar:
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ret
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