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, 2 insertions, 2 deletions

diff --git a/llvm/lib/Target/SystemZ/TargetInfo/SystemZTargetInfo.cpp b/llvm/lib/Target/SystemZ/TargetInfo/SystemZTargetInfo.cpp
index d3c53a43b39..e2b9efd35d3 100644
--- a/llvm/lib/Target/SystemZ/TargetInfo/SystemZTargetInfo.cpp
+++ b/llvm/lib/Target/SystemZ/TargetInfo/SystemZTargetInfo.cpp
@@ -18,6 +18,6 @@ Target &llvm::getTheSystemZTarget() {
 }
 
 extern "C" void LLVMInitializeSystemZTargetInfo() {
-  RegisterTarget<Triple::systemz, /*HasJIT=*/true> X(getTheSystemZTarget(),
-                                                     "systemz", "SystemZ");
+  RegisterTarget<Triple::systemz, /*HasJIT=*/true> X(
+      getTheSystemZTarget(), "systemz", "SystemZ", "SystemZ");
 }