func LowerAllocsToStack(f *ssa.Function) {
pending := make([]ssa.Value, 0, 10)
for _, b := range f.Blocks {
for _, instr := range b.Instrs {
if alloc, ok := instr.(*ssa.Alloc); ok && alloc.Heap && !escapes(alloc, alloc.Block(), pending) {
alloc.Heap = false
f.Locals = append(f.Locals, alloc)
}
}
}
}