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1 # REQUIRES: x86
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2
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3 # RUN: llvm-mc -triple=x86_64-windows-gnu %s -filetype=obj -o %t1.obj
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4 # RUN: llvm-mc -triple=x86_64-windows-gnu %S/Inputs/associative-comdat-mingw-2.s -filetype=obj -o %t2.obj
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5
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6 # RUN: lld-link -lldmingw -entry:main %t1.obj %t2.obj -out:%t.gc.exe -verbose
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7 # RUN: llvm-readobj --sections %t.gc.exe | FileCheck %s
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8
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9 # CHECK: Sections [
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10 # CHECK: Section {
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11 # CHECK: Number: 2
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12 # CHECK-LABEL: Name: .rdata (2E 72 64 61 74 61 00 00)
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13 # This is the critical check to show that only *one* definition of
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14 # .xdata$foo was retained. This *must* be 0x24 (0x4 for the .xdata
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15 # section and 0x20 for the .ctors/.dtors headers/ends).
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16 # Make sure that no other .xdata sections get included, which would
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17 # increase the size here.
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18 # CHECK-NEXT: VirtualSize: 0x24
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19
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20 .text
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21 .def main;
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22 .scl 2;
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23 .type 32;
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24 .endef
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25 .globl main
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26 .p2align 4, 0x90
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27 main:
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28 call foo
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29 retq
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30
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31 # Defines .text$foo (which has a leader symbol and is referenced like
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32 # normally), and .xdata$foo (which lacks a leader symbol, which normally
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33 # would be declared associative to the symbol foo).
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34 # .xdata$foo should be implicitly treated as associative to foo and brought
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35 # in, while .xdata$bar, implicitly associative to bar, not included, and
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36 # .xdata$baz not included since there's no symbol baz.
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37
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38 # GNU binutils ld doesn't do this at all, but always includes all .xdata/.pdata
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39 # comdat sections, even if --gc-sections is used.
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40
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41 .section .xdata$foo,"dr"
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42 .linkonce discard
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43 .p2align 3
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44 .long 42
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45
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46 .section .xdata$bar,"dr"
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47 .linkonce discard
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48 .p2align 3
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49 .long 43
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50
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51 .section .xdata$baz,"dr"
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52 .linkonce discard
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53 .p2align 3
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54 .long 44
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55
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56 .def foo;
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57 .scl 2;
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58 .type 32;
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59 .endef
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60 .section .text$foo,"xr",discard,foo
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61 .globl foo
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62 .p2align 4
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63 foo:
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64 ret
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65
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66 .def bar;
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67 .scl 2;
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68 .type 32;
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69 .endef
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70 .section .text$bar,"xr",discard,bar
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71 .globl bar
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72 .p2align 4
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73 bar:
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74 ret
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