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compiler: move some llvmutil code into the compiler

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This is purely a refactor, to make the next change simpler.
The wordpack functionality used to be necessary in transform passes, but
now it isn't anymore so let's not complicate this more than necessary.
This commit is contained in:
Ayke van Laethem
2023-01-17 22:49:16 +01:00
committed by Ron Evans
parent 159317a5fe
commit 27824e3c80
3 changed files with 170 additions and 200 deletions
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compiler/goroutine.go
+18 -16
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@@ -7,7 +7,6 @@ import (
"go/token"
"go/types"
"github.com/tinygo-org/tinygo/compiler/llvmutil"
"golang.org/x/tools/go/ssa"
"tinygo.org/x/go-llvm"
)
@@ -145,8 +144,11 @@ func (b *builder) createGo(instr *ssa.Go) {
func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.Value, prefix string, hasContext bool, pos token.Pos) llvm.Value {
var wrapper llvm.Value
builder := c.ctx.NewBuilder()
defer builder.Dispose()
b := &builder{
compilerContext: c,
Builder: c.ctx.NewBuilder(),
}
defer b.Dispose()
var deadlock llvm.Value
var deadlockType llvm.Type
@@ -170,7 +172,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
wrapper.SetUnnamedAddr(true)
wrapper.AddAttributeAtIndex(-1, c.ctx.CreateStringAttribute("tinygo-gowrapper", name))
entry := c.ctx.AddBasicBlock(wrapper, "entry")
builder.SetInsertPointAtEnd(entry)
b.SetInsertPointAtEnd(entry)
if c.Debug {
pos := c.program.Fset.Position(pos)
@@ -191,7 +193,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
Optimized: true,
})
wrapper.SetSubprogram(difunc)
builder.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), difunc, llvm.Metadata{})
b.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), difunc, llvm.Metadata{})
}
// Create the list of params for the call.
@@ -199,16 +201,16 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
if !hasContext {
paramTypes = paramTypes[:len(paramTypes)-1] // strip context parameter
}
params := llvmutil.EmitPointerUnpack(builder, c.mod, wrapper.Param(0), paramTypes)
params := b.emitPointerUnpack(wrapper.Param(0), paramTypes)
if !hasContext {
params = append(params, llvm.Undef(c.i8ptrType)) // add dummy context parameter
}
// Create the call.
builder.CreateCall(fnType, fn, params, "")
b.CreateCall(fnType, fn, params, "")
if c.Scheduler == "asyncify" {
builder.CreateCall(deadlockType, deadlock, []llvm.Value{
b.CreateCall(deadlockType, deadlock, []llvm.Value{
llvm.Undef(c.i8ptrType),
}, "")
}
@@ -239,7 +241,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
wrapper.SetUnnamedAddr(true)
wrapper.AddAttributeAtIndex(-1, c.ctx.CreateStringAttribute("tinygo-gowrapper", ""))
entry := c.ctx.AddBasicBlock(wrapper, "entry")
builder.SetInsertPointAtEnd(entry)
b.SetInsertPointAtEnd(entry)
if c.Debug {
pos := c.program.Fset.Position(pos)
@@ -260,23 +262,23 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
Optimized: true,
})
wrapper.SetSubprogram(difunc)
builder.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), difunc, llvm.Metadata{})
b.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), difunc, llvm.Metadata{})
}
// Get the list of parameters, with the extra parameters at the end.
paramTypes := fnType.ParamTypes()
paramTypes = append(paramTypes, fn.Type()) // the last element is the function pointer
params := llvmutil.EmitPointerUnpack(builder, c.mod, wrapper.Param(0), paramTypes)
params := b.emitPointerUnpack(wrapper.Param(0), paramTypes)
// Get the function pointer.
fnPtr := params[len(params)-1]
params = params[:len(params)-1]
// Create the call.
builder.CreateCall(fnType, fnPtr, params, "")
b.CreateCall(fnType, fnPtr, params, "")
if c.Scheduler == "asyncify" {
builder.CreateCall(deadlockType, deadlock, []llvm.Value{
b.CreateCall(deadlockType, deadlock, []llvm.Value{
llvm.Undef(c.i8ptrType),
}, "")
}
@@ -284,13 +286,13 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
if c.Scheduler == "asyncify" {
// The goroutine was terminated via deadlock.
builder.CreateUnreachable()
b.CreateUnreachable()
} else {
// Finish the function. Every basic block must end in a terminator, and
// because goroutines never return a value we can simply return void.
builder.CreateRetVoid()
b.CreateRetVoid()
}
// Return a ptrtoint of the wrapper, not the function itself.
return builder.CreatePtrToInt(wrapper, c.uintptrType, "")
return b.CreatePtrToInt(wrapper, c.uintptrType, "")
}