[llvm-branch-commits] [llvm] llvm-lto2: Add print-guid subcommand. (PR #143992)

[Peter Collingbourne via llvm-branch-commits]

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/143992

>From f11d7d544cc61dce582de538608bfd512147f90a Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter at pcc.me.uk>
Date: Thu, 12 Jun 2025 16:06:14 -0700
Subject: [PATCH 1/2] Upload correct patch

Created using spr 1.3.6-beta.1
---
 llvm/tools/llvm-lto2/llvm-lto2.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/llvm/tools/llvm-lto2/llvm-lto2.cpp b/llvm/tools/llvm-lto2/llvm-lto2.cpp
index 5f5c954c6a57d..d35868ffafe1e 100644
--- a/llvm/tools/llvm-lto2/llvm-lto2.cpp
+++ b/llvm/tools/llvm-lto2/llvm-lto2.cpp
@@ -610,7 +610,9 @@ 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)
-    outs() << GlobalValue::getGUIDAssumingExternalLinkage(argv[2]);
+  if (Subcommand == "print-guid" && argc > 2) {
+    outs() << GlobalValue::getGUIDAssumingExternalLinkage(argv[2]) << '\n';
+    return 0;
+  }
   return usage();
 }

>From c7cb16abb3c30e54a12ec1b9ce325d49cf37d2bc Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter at pcc.me.uk>
Date: Fri, 13 Jun 2025 14:34:28 -0700
Subject: [PATCH 2/2] Add comment

Created using spr 1.3.6-beta.1
---
 llvm/tools/llvm-lto2/llvm-lto2.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/tools/llvm-lto2/llvm-lto2.cpp b/llvm/tools/llvm-lto2/llvm-lto2.cpp
index d35868ffafe1e..fbde66666a596 100644
--- a/llvm/tools/llvm-lto2/llvm-lto2.cpp
+++ b/llvm/tools/llvm-lto2/llvm-lto2.cpp
@@ -611,6 +611,8 @@ int main(int argc, char **argv) {
   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;
   }