[llvm] r233239 - Add computeFSAdditions to the function based subtarget creation

[Eric Christopher]

Author: echristo
Date: Wed Mar 25 19:50:23 2015
New Revision: 233239

URL: http://llvm.org/viewvc/llvm-project?rev=233239&view=rev
Log:
Add computeFSAdditions to the function based subtarget creation
for PPC due to some unfortunate default setting via TargetMachine
creation. I've added a FIXME on how this can be unraveled in the
backend and a test to make sure we successfully legalize 64-bit things
if we say we're 64-bits.

Modified:
    llvm/trunk/lib/Target/PowerPC/PPCTargetMachine.cpp

Modified: llvm/trunk/lib/Target/PowerPC/PPCTargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCTargetMachine.cpp?rev=233239&r1=233238&r2=233239&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCTargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCTargetMachine.cpp Wed Mar 25 19:50:23 2015
@@ -207,7 +207,15 @@ PPCTargetMachine::getSubtargetImpl(const
     // creation will depend on the TM and the code generation flags on the
     // function that reside in TargetOptions.
     resetTargetOptions(F);
-    I = llvm::make_unique<PPCSubtarget>(TargetTriple, CPU, FS, *this);
+    I = llvm::make_unique<PPCSubtarget>(
+        TargetTriple, CPU,
+        // FIXME: It would be good to have the subtarget additions here
+        // not necessary. Anything that turns them on/off (overrides) ends
+        // up being put at the end of the feature string, but the defaults
+        // shouldn't require adding them. Fixing this means pulling Feature64Bit
+        // out of most of the target cpus in the .td file and making it set only
+        // as part of initialization via the TargetTriple.
+        computeFSAdditions(FS, getOptLevel(), getTargetTriple()), *this);
   }
   return I.get();
 }