Martin Kustermann
4ea512b4c1
The LLVM code generator should only consume the serialized IR and not use any other VM functionality.
This CL adds a custom zone which can be used for the deserialized IR nodes and removes any
Dart_SetVMFlags/Dart_Initialize/ApiZone/... calls.
This works with the existing example:
% ninja -C out/ReleaseX64 codegen
% out/ReleaseX64/codegen runtime/llvm_codegen/test/codegen/Inputs/hello.sex
...
define void @"hello.dart::main"() {
B1:
%0 = call i8* @llvm.stacksave()
%1 = ptrtoint i8* %0 to i64
%2 = load i64, i64 addrspace(256)* inttoptr (i64 72 to i64 addrspace(256)*)
%3 = icmp ult i64 %1, %2
br i1 %3, label %4, label %5
...
ret void
}
...
Change-Id: I1d07ba6bc122d100c73f97cfa961d36240489666
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/120792
Commit-Queue: Martin Kustermann <kustermann@google.com>
Auto-Submit: Martin Kustermann <kustermann@google.com>
Reviewed-by: Teagan Strickland <sstrickl@google.com>
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_LLVM_CODEGEN_CODEGEN_CUSTOM_ZONE_H_
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#define RUNTIME_LLVM_CODEGEN_CODEGEN_CUSTOM_ZONE_H_
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#include <vector>
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// We use a custom zone here which doesn't depend on VM internals (e.g. handles,
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// thread, ...)
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#if defined(RUNTIME_VM_ZONE_H_)
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#error "We want our own zone implementation"
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#endif
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#define RUNTIME_VM_ZONE_H_
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namespace dart {
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class Zone {
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public:
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Zone() {}
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~Zone();
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template <class ElementType>
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inline ElementType* Alloc(intptr_t length) {
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return static_cast<ElementType*>(
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AllocUnsafe(sizeof(ElementType) * length));
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}
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template <class ElementType>
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inline ElementType* Realloc(ElementType* old_array,
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intptr_t old_length,
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intptr_t new_length) {
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void* memory = AllocUnsafe(sizeof(ElementType) * new_length);
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memmove(memory, old_array, sizeof(ElementType) * old_length);
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return static_cast<ElementType*>(memory);
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}
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template <class ElementType>
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void Free(ElementType* old_array, intptr_t len) {}
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void* AllocUnsafe(intptr_t size);
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private:
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Zone(const Zone&) = delete;
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void operator=(const Zone&) = delete;
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std::vector<void*> buffers_;
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};
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} // namespace dart
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#endif // RUNTIME_LLVM_CODEGEN_CODEGEN_CUSTOM_ZONE_H_
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