// llvmDataLayout returns the data layout string
// representation for the specified LLVM triple.
func llvmDataLayout(triple string) (string, error) {
// Triples are several fields separated by '-' characters.
// The first field is the architecture. The architecture's
// canonical form may include a '-' character, which would
// have been translated to '_' for inclusion in a triple.
arch := parseArch(triple[:strings.IndexRune(triple, '-')])
switch arch {
case "x86-64":
return x86TargetData, nil
}
for target := llvm.FirstTarget(); target.C != nil; target = target.NextTarget() {
if arch == target.Name() {
machine := target.CreateTargetMachine(
triple, "", "",
llvm.CodeGenLevelDefault,
llvm.RelocDefault,
llvm.CodeModelDefault,
)
target := machine.TargetData().String()
machine.Dispose()
return target, nil
}
}
return "", fmt.Errorf("Invalid target triple: %s", triple)
}
func displayVersion() {
fmt.Printf("llgo version %s (Go %s)\n", llgo.LLGOVersion, runtime.Version())
fmt.Println()
fmt.Println(" Available targets:")
longestTargetName := 0
targetDescriptions := make(map[string]string)
targetNames := make([]string, 0)
for target := llvm.FirstTarget(); target.C != nil; target = target.NextTarget() {
targetName := target.Name()
targetNames = append(targetNames, targetName)
targetDescriptions[targetName] = target.Description()
if len(targetName) > longestTargetName {
longestTargetName = len(targetName)
}
}
sort.Strings(targetNames)
for _, targetName := range targetNames {
var paddingLen int = longestTargetName - len(targetName)
fmt.Printf(" %s %*s %s\n", targetName, paddingLen+1, "-",
targetDescriptions[targetName])
}
fmt.Println()
os.Exit(0)
}