Added getDefaultSubtargetFeatures method to SubtargetFeatures class which returns a correct feature string for given triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89236 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SubtargetFeature.cpp b/lib/Target/SubtargetFeature.cpp
index 664a43c..590574e 100644
--- a/lib/Target/SubtargetFeature.cpp
+++ b/lib/Target/SubtargetFeature.cpp
@@ -357,3 +357,30 @@
void SubtargetFeatures::dump() const {
print(errs());
}
+
+/// getDefaultSubtargetFeatures - Return a string listing
+/// the features associated with the target triple.
+///
+/// FIXME: This is an inelegant way of specifying the features of a
+/// subtarget. It would be better if we could encode this information
+/// into the IR. See <rdar://5972456>.
+///
+std::string SubtargetFeatures::getDefaultSubtargetFeatures(
+ const Triple& Triple) {
+ switch (Triple.getVendor()) {
+ case Triple::Apple:
+ switch (Triple.getArch()) {
+ case Triple::ppc: // powerpc-apple-*
+ return std::string("altivec");
+ case Triple::ppc64: // powerpc64-apple-*
+ return std::string("64bit,altivec");
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return std::string("");
+}