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48 lines
1.5 KiB
Nim
48 lines
1.5 KiB
Nim
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# Constantine
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Copyright (c) 2020-Present Mamy André-Ratsimbazafy
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import ../../constantine/platforms/gpu/llvm
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echo "LLVM JIT compiler Hello World"
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let ctx = createContext()
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let module = ctx.createModule("addition")
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let i32 = ctx.int32_t()
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let addType = function_t(i32, [i32, i32], isVarArg = LlvmBool(false))
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let addBody = module.addFunction("add", addType)
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let builder = ctx.createBuilder()
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let blck = ctx.appendBasicBlock(addBody, "addBody")
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builder.positionAtEnd(blck)
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block:
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let a = addBody.getParam(0)
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let b = addBody.getParam(1)
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let sum = builder.add(a, b, "sum")
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builder.ret(sum)
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module.verify(AbortProcessAction)
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var engine: ExecutionEngineRef
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block:
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initializeFullNativeTarget()
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createJITCompilerForModule(engine, module, optLevel = 0)
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let jitAdd = cast[proc(a, b: int32): int32 {.noconv.}](
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engine.getFunctionAddress("add"))
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echo "jitAdd(1, 2) = ", jitAdd(1, 2)
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doAssert jitAdd(1, 2) == 1 + 2
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block:
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# Cleanup
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builder.dispose()
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engine.dispose() # also destroys the module attached to it
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ctx.dispose()
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echo "LLVM JIT - SUCCESS"
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