Introduce helpers to compute the 32-bit varaints and 64-bit variants of

some architectures. These are useful for interacting with multiarch or
bi-arch GCC (or GCC-based) toolchains.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149895 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h
index 3a20aad386..f5f96a2261 100644
--- a/include/llvm/ADT/Triple.h
+++ b/include/llvm/ADT/Triple.h
@@ -385,6 +385,26 @@ public:
   const char *getArchNameForAssembler();
 
   /// @}
+  /// @name Helpers to build variants of a particular triple.
+  /// @{
+
+  /// \brief Form a triple with a 32-bit variant of the current architecture.
+  ///
+  /// This can be used to move across "families" of architectures where useful.
+  ///
+  /// \returns A new triple with a 32-bit architecture or an unknown
+  ///          architecture if no such variant can be found.
+  llvm::Triple get32BitArchVariant() const;
+
+  /// \brief Form a triple with a 64-bit variant of the current architecture.
+  ///
+  /// This can be used to move across "families" of architectures where useful.
+  ///
+  /// \returns A new triple with a 64-bit architecture or an unknown
+  ///          architecture if no such variant can be found.
+  llvm::Triple get64BitArchVariant() const;
+
+  /// @}
   /// @name Static helpers for IDs.
   /// @{