Backend: Refine printfs into ir unit

Move the printfs of PrintfParser into the ir::Unit to make the gbe
thread safe. The old static printfs will be cleared by othrer thread
when running in multithread.
V2:
Rebase the patch

Signed-off-by: Pan Xiuli <xiuli.pan@intel.com>
Reviewed-by: Yang Rong <rong.r.yang@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/backend/src/ir/unit.cpp b/backend/src/ir/unit.cpp
index 56042446..a350c602 100644
--- a/backend/src/ir/unit.cpp
+++ b/backend/src/ir/unit.cpp
@@ -34,6 +34,7 @@ namespace ir {
   Unit::~Unit(void) {
     for (const auto &pair : functions) GBE_DELETE(pair.second);
     delete profilingInfo;
+    for (const auto &pair : printfs) GBE_DELETE(pair.second);
   }
   Function *Unit::getFunction(const std::string &name) const {
     auto it = functions.find(name);