func (v *gen) genFunction(fn *ir.Function) {
v.nl()
v.emitDirec(".globl %s", fn.Name())
v.emitDirec(".type %s,@function", fn.Name())
v.emitLabel("%s:", fn.Name())
// setup the stack
v.emitOp("pushl @ebp")
v.emitOp("movl @esp, @ebp")
v.emitOp("pusha")
v.emitOp("andl $-16, @esp") // align SP to 16-byte boundary
alloc := v.target.newAllocator()
alloc.allocFunction(fn)
v.emitOp("subl $%d, @esp", alloc.stackSize) // actually allocate the stack vars
labelNames := make(map[*ir.Block]string)
for _, block := range fn.Blocks() {
labelNames[block] = v.nextLabelName()
}
for _, block := range fn.Blocks() {
v.genBlock(block, alloc, labelNames)
}
}
