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LlvmCodeGen::CastPtrToLlvmPtr embeds a pointer that points to data in the current process's memory into codegen'd IR code. Our long term goal is to share the codegen'd IR among processes working on the same fragment, which is not possible if the IR contains pointers pointing to data of a specific process. A step in making the IR independent of the process generating it is removing LlvmCodeGen::CastPtrToLlvmPtr. Change-Id: I046a06fbf23629a90cc2cca164176a89e557c7c4 Reviewed-on: http://gerrit.cloudera.org:8080/16517 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// This is a test-only file. It was used to generate test-loop.bc
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// which is used by the unit test to exercise loading precompiled
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// ir.
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#include <stdio.h>
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#include <cstdint>
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/// The default implementation does nothing with the pointer argument. The codegen
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/// implementation that it will be replaced with will increment it.
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__attribute__ ((noinline)) void DefaultImplementation(int64_t* ptr) {
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// We need to use 'ptr' otherwise clang marks it as 'readnone' and doesn't actually pass
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// the value from the caller. We need the value to be passed because the codegen'd
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// function this function will be replaced with does use the argument.
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printf("Default, value is %ld.\n", *ptr);
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}
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void TestLoop(int n, int64_t* counter) {
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for (int i = 0; i < n; ++i) {
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DefaultImplementation(counter);
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}
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}
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// Unused function to make sure printf declaration is included in IR module. Used by
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// LlvmCodegen::CodegenDebugTrace().
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void printf_dummy_fn() {
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printf("dummy");
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}
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