unterminated llvm:MemoryBuffer; fix check_import.py path

Author: kszucs

ci/travis_script_manylinux.sh

@@ -27,6 +27,8 @@ set -ex
 source $TRAVIS_BUILD_DIR/ci/travis_env_common.sh
 source $TRAVIS_BUILD_DIR/ci/travis_install_conda.sh
 
+pushd python/manylinux1
+
 cat << EOF > check_imports.py
 import sys
 import pyarrow
@@ -39,8 +41,6 @@ if sys.version_info.major > 2:
     import pyarrow.gandiva
 EOF
 
-pushd python/manylinux1
-
 for PYTHON_TUPLE in ${PYTHON_VERSIONS}; do
   IFS="," read PYTHON_VERSION UNICODE_WIDTH <<< $PYTHON_TUPLE
 

cpp/src/gandiva/engine.cc

@@ -134,7 +134,7 @@ Status Engine::LoadPreCompiledIR() {
 
   /// Read from file into memory buffer.
   llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer_or_error =
-      llvm::MemoryBuffer::getMemBuffer(bitcode);
+      llvm::MemoryBuffer::getMemBuffer(bitcode, "precompiled", false);
 
   ARROW_RETURN_IF(!buffer_or_error,
                   Status::CodeGenError("Could not load module from IR: ",