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llvm-lto2: Add print-guid subcommand. #143992

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Merged
merged 6 commits into from
Jun 13, 2025
Merged

llvm-lto2: Add print-guid subcommand. #143992

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[𝘀𝗽𝗿] initial version
pcc Jun 12, 2025
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[𝘀𝗽𝗿] changes to main this commit is based on
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Upload correct patch
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[𝘀𝗽𝗿] changes introduced through rebase
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2 changes: 2 additions & 0 deletions llvm/test/tools/llvm-lto2/print-guid.test
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
# RUN: llvm-lto2 print-guid foo | FileCheck %s
# CHECK: 6699318081062747564
8 changes: 7 additions & 1 deletion llvm/tools/llvm-lto2/llvm-lto2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -247,7 +247,7 @@ template <typename T> static T check(ErrorOr<T> E, std::string Msg) {
}

static int usage() {
errs() << "Available subcommands: dump-symtab run\n";
errs() << "Available subcommands: dump-symtab run print-guid\n";
return 1;
}

Expand Down Expand Up @@ -610,5 +610,11 @@ int main(int argc, char **argv) {
return dumpSymtab(argc - 1, argv + 1);
if (Subcommand == "run")
return run(argc - 1, argv + 1);
if (Subcommand == "print-guid" && argc > 2) {
// Note the name of the function we're calling: this won't return the right
// answer for internal linkage symbols.
outs() << GlobalValue::getGUIDAssumingExternalLinkage(argv[2]) << '\n';
return 0;
}
return usage();
}
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