[multiversion] Remove the cached TargetMachine pointer from the

intermediate TTI implementation template and instead query up to the
derived class for both the TargetMachine and the TargetLowering.

Most of the derived types had a TLI cached already and there is no need
to store a less precisely typed target machine pointer.

This will in turn make it much cleaner to look up the TLI via
a per-function subtarget instead of the generic subtarget, and it will
pave the way toward pulling the subtarget used for unroll preferences
into the same form once we are *always* using the function to look up
the correct subtarget.

llvm-svn: 227737

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp b/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp
index a9fe43c6605..e0334732fdc 100644
--- a/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp
+++ b/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp
@@ -33,4 +33,5 @@ cl::opt<unsigned>
                                     cl::desc("Threshold for partial unrolling"),
                                     cl::Hidden);
 
-BasicTTIImpl::BasicTTIImpl(const TargetMachine *TM) : BaseT(TM) {}
+BasicTTIImpl::BasicTTIImpl(const TargetMachine *TM)
+    : BaseT(TM), TM(TM), TLI(TM->getSubtargetImpl()->getTargetLowering()) {}