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refactor coroutine lowering and tasks

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This commit is contained in:
Jaden Weiss
2020-01-03 00:23:37 -05:00
committed by Ayke
parent 2521cacb51
commit 6a50f25a48
40 changed files with 1830 additions and 1515 deletions
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transform/func-lowering.go
+9 -23
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@@ -181,29 +181,15 @@ func LowerFuncValues(mod llvm.Module) {
// Remove some casts, checks, and the old call which we're going
// to replace.
for _, callIntPtr := range getUses(getFuncPtrCall) {
if !callIntPtr.IsACallInst().IsNil() && callIntPtr.CalledValue().Name() == "runtime.makeGoroutine" {
// Special case for runtime.makeGoroutine.
for _, inttoptr := range getUses(callIntPtr) {
if inttoptr.IsAIntToPtrInst().IsNil() {
panic("expected a inttoptr")
}
for _, use := range getUses(inttoptr) {
addFuncLoweringSwitch(mod, builder, funcID, use, func(funcPtr llvm.Value, params []llvm.Value) llvm.Value {
// The function lowering switch code passes in a parent handle value.
// Set the parent handle to null here because it is irrelevant to goroutine starts.
i8ptrType := llvm.PointerType(ctx.Int8Type(), 0)
params[len(params)-1] = llvm.ConstPointerNull(i8ptrType)
calleeValue := builder.CreatePtrToInt(funcPtr, uintptrType, "")
makeGoroutine := mod.NamedFunction("runtime.makeGoroutine")
calleeValue = builder.CreateCall(makeGoroutine, []llvm.Value{calleeValue, llvm.Undef(i8ptrType), llvm.ConstNull(i8ptrType)}, "")
calleeValue = builder.CreateIntToPtr(calleeValue, funcPtr.Type(), "")
builder.CreateCall(calleeValue, params, "")
return llvm.Value{} // void so no return value
}, functions)
use.EraseFromParentAsInstruction()
}
inttoptr.EraseFromParentAsInstruction()
}
if !callIntPtr.IsACallInst().IsNil() && callIntPtr.CalledValue().Name() == "internal/task.start" {
// Special case for goroutine starts.
addFuncLoweringSwitch(mod, builder, funcID, callIntPtr, func(funcPtr llvm.Value, params []llvm.Value) llvm.Value {
i8ptrType := llvm.PointerType(ctx.Int8Type(), 0)
calleeValue := builder.CreatePtrToInt(funcPtr, uintptrType, "")
start := mod.NamedFunction("internal/task.start")
builder.CreateCall(start, []llvm.Value{calleeValue, callIntPtr.Operand(1), llvm.Undef(i8ptrType), llvm.ConstNull(i8ptrType)}, "")
return llvm.Value{} // void so no return value
}, functions)
callIntPtr.EraseFromParentAsInstruction()
continue
}