func checkInstr(instr ssa.Instruction, blockDomTree *analysis.DominatorTree) error {
thisBlockNode := blockDomTree.NodeForBlock(instr.Block())
if _, ok := instr.(*ssa.Phi); !ok {
for _, op := range ssa.GetOperands(instr) {
if opInstr, ok := op.(ssa.Instruction); ok {
opInstrBlock := opInstr.Block()
if thisBlockNode.DominatedBy(blockDomTree.NodeForBlock(opInstrBlock), true) {
continue
} else if opInstrBlock == instr.Block() {
if opInstrBlock.InstrIndex(opInstr) < opInstrBlock.InstrIndex(instr) {
continue
}
}
return &InstrError{
Instr: instr,
Message: "Instruction is not dominated by operand `" + ssa.ValueString(op) + "`",
}
}
}
}
switch i := instr.(type) {
case *ssa.BinOp:
return checkBinOp(i)
case *ssa.Load:
return checkLoad(i)
case *ssa.Call:
return checkCall(i)
case *ssa.Alloc:
return checkAlloc(i)
case *ssa.Store:
return checkStore(i)
case *ssa.Convert:
return checkConvert(i)
case *ssa.ICmp:
return checkICmp(i)
case *ssa.CondBr:
return checkCondBr(i)
case *ssa.Br:
return checkBr(i)
case *ssa.Phi:
return checkPhi(i, blockDomTree)
case *ssa.Ret:
return checkRet(i)
case *ssa.GEP:
return checkGEP(i)
case *ssa.Unreachable:
// do nothing
default:
panic("unim")
}
return nil
}
func PrintValues(mod *ssa.Module, out io.Writer) {
printf := func(val string, stuff ...interface{}) {
fmt.Fprintf(out, val, stuff...)
}
printf("Values in module `%s`\n", mod.Name())
printf("\n")
printf("Globals:\n")
for _, glob := range mod.Globals() {
printf(" %s (references: %d)\n", ssa.ValueString(glob), len(glob.References()))
}
printf("\n")
printf("Functions:\n")
for _, fn := range mod.Functions() {
printf(" %s (references: %d)\n", ssa.ValueString(fn), len(fn.References()))
if fn.IsPrototype() {
printf("\n")
continue
}
printf(" Parameters:\n")
for _, par := range fn.Parameters() {
printf(" %s (references: %d)\n", ssa.ValueString(par), len(par.References()))
}
printf(" Instruction values:\n")
for _, block := range fn.Blocks() {
for _, instr := range block.Instrs() {
if val, ok := instr.(ssa.Value); ok {
printf(" %s (references: %d)\n", ssa.ValueString(val), len(val.References()))
}
}
}
printf("\n")
}
}
