[PATCH] D155731: [AIX] Define llvm::thread::DefaultStackSize to 4 megabytes on AIX

[wael yehia via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGf94608a16489: Define llvm::thread::DefaultStackSize to 4 megabytes on AIX (authored by w2yehia).

Changed prior to commit:
  https://reviews.llvm.org/D155731?vs=542104&id=542140#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155731/new/

https://reviews.llvm.org/D155731

Files:
  llvm/lib/Support/Threading.cpp


Index: llvm/lib/Support/Threading.cpp
===================================================================
--- llvm/lib/Support/Threading.cpp
+++ llvm/lib/Support/Threading.cpp
@@ -83,6 +83,11 @@
   // the same interface as std::thread but requests the same stack size as the
   // main thread (8MB) before creation.
 const std::optional<unsigned> llvm::thread::DefaultStackSize = 8 * 1024 * 1024;
+#elif defined(_AIX)
+  // On AIX, the default pthread stack size limit is ~192k for 64-bit programs.
+  // This limit is easily reached when doing link-time thinLTO. AIX library
+  // developers have used 4MB, so we'll do the same.
+const std::optional<unsigned> llvm::thread::DefaultStackSize = 4 * 1024 * 1024;
 #else
 const std::optional<unsigned> llvm::thread::DefaultStackSize;
 #endif


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