namespace llvm {
-/// Triple - Helper class for working with target triples.
+/// Triple - Helper class for working with autoconf configuration names. For
+/// historical reasons, we also call these 'triples' (they used to contain
+/// exactly three fields).
///
-/// Target triples are strings in the canonical form:
+/// Configuration names are strings in the canonical form:
/// ARCHITECTURE-VENDOR-OPERATING_SYSTEM
/// or
/// ARCHITECTURE-VENDOR-OPERATING_SYSTEM-ENVIRONMENT
///
/// This class is used for clients which want to support arbitrary
-/// target triples, but also want to implement certain special
-/// behavior for particular targets. This class isolates the mapping
-/// from the components of the target triple to well known IDs.
+/// configuration names, but also want to implement certain special
+/// behavior for particular configurations. This class isolates the mapping
+/// from the components of the configuration name to well known IDs.
///
/// At its core the Triple class is designed to be a wrapper for a triple
/// string; the constructor does not change or normalize the triple string.
/// Clients that need to handle the non-canonical triples that users often
/// specify should use the normalize method.
///
-/// See autoconf/config.guess for a glimpse into what triples look like in
-/// practice.
+/// See autoconf/config.guess for a glimpse into what configuration names
+/// look like in practice.
class Triple {
public:
enum ArchType {
UnknownArch,
- arm, // ARM; arm, armv.*, xscale
+ arm, // ARM: arm, armv.*, xscale
+ aarch64, // AArch64: aarch64
hexagon, // Hexagon: hexagon
mips, // MIPS: mips, mipsallegrex
mipsel, // MIPSEL: mipsel, mipsallegrexel
r600, // R600: AMD GPUs HD2XXX - HD6XXX
sparc, // Sparc: sparc
sparcv9, // Sparcv9: Sparcv9
+ systemz, // SystemZ: s390x
tce, // TCE (http://tce.cs.tut.fi/): tce
thumb, // Thumb: thumb, thumbv.*
x86, // X86: i[3-9]86