Turn MipsOptimizeMathLibCalls into a target-independent scalar transform

...so that it can be used for z too.  Most of the code is the same.
The only real change is to use TargetTransformInfo to test when a sqrt
instruction is available.

The pass is opt-in because at the moment it only handles sqrt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189097 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/Target/SystemZ/SystemZTargetMachine.cpp b/lib/Target/SystemZ/SystemZTargetMachine.cpp
index 856183c6f4..f2761520cd 100644
--- a/lib/Target/SystemZ/SystemZTargetMachine.cpp
+++ b/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -10,6 +10,7 @@
 #include "SystemZTargetMachine.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/Support/TargetRegistry.h"
+#include "llvm/Transforms/Scalar.h"
 
 using namespace llvm;
 
@@ -47,12 +48,18 @@ public:
     return getTM<SystemZTargetMachine>();
   }
 
+  virtual void addIRPasses() LLVM_OVERRIDE;
   virtual bool addInstSelector() LLVM_OVERRIDE;
   virtual bool addPreSched2() LLVM_OVERRIDE;
   virtual bool addPreEmitPass() LLVM_OVERRIDE;
 };
 } // end anonymous namespace
 
+void SystemZPassConfig::addIRPasses() {
+  TargetPassConfig::addIRPasses();
+  addPass(createPartiallyInlineLibCallsPass());
+}
+
 bool SystemZPassConfig::addInstSelector() {
   addPass(createSystemZISelDag(getSystemZTargetMachine(), getOptLevel()));
   return false;