[Mlir-commits] [mlir] Make printing Value to a stream thread-safe (PR #185762)

[Jacenty Andruszkiewicz]

https://github.com/Jacenty-And-Intel updated https://github.com/llvm/llvm-project/pull/185762

>From 04fda5fb054a47c33d1f709639e16ffe0faa9335 Mon Sep 17 00:00:00 2001
From: "Andruszkiewicz, Jacenty" <jacenty.andruszkiewicz at intel.com>
Date: Tue, 10 Mar 2026 19:41:56 +0000
Subject: [PATCH] Make printing Value to a stream thread-safe

Adjust Value's operator<< and dump() function so that it can be safely used with multithreading enabled.
---
 mlir/include/mlir/IR/Value.h | 5 +----
 mlir/lib/IR/AsmPrinter.cpp   | 7 ++++++-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/mlir/include/mlir/IR/Value.h b/mlir/include/mlir/IR/Value.h
index af58778a0a13e..e72ace0920eb1 100644
--- a/mlir/include/mlir/IR/Value.h
+++ b/mlir/include/mlir/IR/Value.h
@@ -243,10 +243,7 @@ class Value {
   detail::ValueImpl *impl;
 };
 
-inline raw_ostream &operator<<(raw_ostream &os, Value value) {
-  value.print(os);
-  return os;
-}
+raw_ostream &operator<<(raw_ostream &os, Value value);
 
 //===----------------------------------------------------------------------===//
 // OpOperand
diff --git a/mlir/lib/IR/AsmPrinter.cpp b/mlir/lib/IR/AsmPrinter.cpp
index b3242f838fc1d..5e9f6e87dfe08 100644
--- a/mlir/lib/IR/AsmPrinter.cpp
+++ b/mlir/lib/IR/AsmPrinter.cpp
@@ -4142,8 +4142,13 @@ void Value::print(raw_ostream &os, AsmState &state) const {
      << "' at index: " << arg.getArgNumber();
 }
 
+raw_ostream &mlir::operator<<(raw_ostream &os, Value value) {
+  value.print(os, OpPrintingFlags().useLocalScope());
+  return os;
+}
+
 void Value::dump() const {
-  print(llvm::errs());
+  print(llvm::errs(), OpPrintingFlags().useLocalScope());
   llvm::errs() << "\n";
 }