Add backend name to Target to enable runtime info to be fed back into TableGen

Summary:
Make it possible to feed runtime information back to tablegen to enable
profile-guided tablegen-eration, detection of untested tablegen definitions, etc.

Being a cross-compiler by nature, LLVM will potentially collect data for multiple
architectures (e.g. when running 'ninja check'). We therefore need a way for
TableGen to figure out what data applies to the backend it is generating at the
time. This patch achieves that by including the name of the 'def X : Target ...'
for the backend in the TargetRegistry.

Reviewers: qcolombet

Reviewed By: qcolombet

Subscribers: jholewinski, arsenm, jyknight, aditya_nandakumar, sdardis, nemanjai, ab, nhaehnle, t.p.northover, javed.absar, qcolombet, llvm-commits, fedor.sergeev

Differential Revision: https://reviews.llvm.org/D39742

llvm-svn: 318352

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp b/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp
index caa69f8d71b..b0491a4108a 100644
--- a/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp
+++ b/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp
@@ -30,12 +30,12 @@ Target &llvm::getTheThumbBETarget() {
 
 extern "C" void LLVMInitializeARMTargetInfo() {
   RegisterTarget<Triple::arm, /*HasJIT=*/true> X(getTheARMLETarget(), "arm",
-                                                 "ARM");
+                                                 "ARM", "ARM");
   RegisterTarget<Triple::armeb, /*HasJIT=*/true> Y(getTheARMBETarget(), "armeb",
-                                                   "ARM (big endian)");
+                                                   "ARM (big endian)", "ARM");
 
   RegisterTarget<Triple::thumb, /*HasJIT=*/true> A(getTheThumbLETarget(),
-                                                   "thumb", "Thumb");
+                                                   "thumb", "Thumb", "ARM");
   RegisterTarget<Triple::thumbeb, /*HasJIT=*/true> B(
-      getTheThumbBETarget(), "thumbeb", "Thumb (big endian)");
+      getTheThumbBETarget(), "thumbeb", "Thumb (big endian)", "ARM");
 }