From e91208c9631c98abbdce19ca7b1f51d9241faa18 Mon Sep 17 00:00:00 2001 From: Nicolas Geoffray Date: Fri, 12 Jun 2009 14:11:08 +0000 Subject: [PATCH] After obtaining the lock, look if the function has been codegen'd by another thread. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73227 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/ExecutionEngine/JIT/JIT.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/ExecutionEngine/JIT/JIT.cpp b/lib/ExecutionEngine/JIT/JIT.cpp index f8ae8844616..43995cb0ecd 100644 --- a/lib/ExecutionEngine/JIT/JIT.cpp +++ b/lib/ExecutionEngine/JIT/JIT.cpp @@ -563,6 +563,11 @@ void *JIT::getPointerToFunction(Function *F) { return Addr; // Check if function already code gen'd MutexGuard locked(lock); + + // Now that this thread owns the lock, check if another thread has already + // code gen'd the function. + if (void *Addr = getPointerToGlobalIfAvailable(F)) + return Addr; // Make sure we read in the function if it exists in this Module. if (F->hasNotBeenReadFromBitcode()) {