firefox: disable PGO on 32-bit

2026-07-16 13:52:45 -07:00
parent 7c7349ee6e
commit b1ce11974e
1 changed files with 7 additions and 1 deletions
@@ -145,7 +145,13 @@ in
  ),
  overrideCC,
  buildPackages,
-  pgoSupport ? (stdenv.hostPlatform.isLinux && stdenv.hostPlatform == stdenv.buildPlatform),
+  # PGO merges profile data with a 32-bit llvm-profdata, which runs out of
+  # address space on the huge libxul profile, so disable it on 32-bit.
+  pgoSupport ? (
+    stdenv.hostPlatform.isLinux
+    && stdenv.hostPlatform == stdenv.buildPlatform
+    && stdenv.hostPlatform.is64bit
+  ),
  xvfb-run,
  elfhackSupport ?
    isElfhackPlatform stdenv && !(stdenv.hostPlatform.isMusl && stdenv.hostPlatform.isAarch64),