Make sure all the relocations are filled in for partially cloned target #44262
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KristofferC
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backport 1.6
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vtjnash
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This was referenced Feb 23, 2022
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We collect the relocations (i.e. the GOT slots that is used in the code) for each target
in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned
for this target within the group (It does mean that at least one target
in the group has it cloned). The previous version would miss the relocation in this case.
This was triggerred with the following cloning situation
caller: clone_1
callee: clone_1, clone_1.clone_3
Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation
for callee will be used and is required to be initialized.
In addition to target 1, target 2 (and in fact target 3) within group 1
will also use caller.clone_1. However, since callee isn't cloned for target 2
the previous version wouldn't have saved this slot in the relocation array.
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…et (JuliaLang#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array.
KristofferC
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…et (#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array. (cherry picked from commit 76fc067)
KristofferC
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…et (#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array. (cherry picked from commit 76fc067)
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…et (JuliaLang#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array.
KristofferC
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Mar 15, 2022
…et (#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array. (cherry picked from commit 76fc067)
KristofferC
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Apr 19, 2022
…et (#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array. (cherry picked from commit 76fc067)
staticfloat
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Dec 23, 2022
…et (#44262) We collect the relocations (i.e. the GOT slots that is used in the code) for each target in `tgt.relocs`. Needing a relocation, however, does not imply that the function is cloned for this target within the group (It does mean that at least one target in the group has it cloned). The previous version would miss the relocation in this case. This was triggerred with the following cloning situation caller: clone_1 callee: clone_1, clone_1.clone_3 Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation for callee will be used and is required to be initialized. In addition to target 1, target 2 (and in fact target 3) within group 1 will also use caller.clone_1. However, since callee isn't cloned for target 2 the previous version wouldn't have saved this slot in the relocation array. (cherry picked from commit 76fc067)
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We collect the relocations (i.e. the GOT slots that is used in the code) for each target
in
tgt.relocs. Needing a relocation, however, does not imply that the function is clonedfor this target within the group (It does mean that at least one target
in the group has it cloned). The previous version would miss the relocation in this case.
This was triggerred with the following cloning situation
Since caller.clone_1 may call either callee.clone_1 or callee.clone_1.clone_3 a relocation
for callee will be used and is required to be initialized.
In addition to target 1, target 2 (and in fact target 3) within group 1
will also use caller.clone_1. However, since callee isn't cloned for target 2
the previous version wouldn't have saved this slot in the relocation array.
AFAICT this bug has been here since the first merged version yet it only just triggered for me by 072c041 during precompilation of ColorTypes.jl in the compiler (caller was
cconvertfallback and callee was a no-opconvert.). This should probably be backported (and it should be able to backport cleanly all the way back to 0.7) even though apparently no one has hit it....