[PATCH] [ValueTracking] Extend range metadata to call/invoke

[hfinkel at anl.gov]

LGTM, thanks!

================
Comment at: lib/Analysis/ValueTracking.cpp:201
@@ -201,1 +200,3 @@
+    ConstantInt *Lower = cast<ConstantInt>(Ranges.getOperand(2 * i + 0));
+    ConstantInt *Upper = cast<ConstantInt>(Ranges.getOperand(2 * i + 1));
     ConstantRange Range(Lower->getValue(), Upper->getValue());
----------------
I don't like the extra spaces here around the * operator.

================
Comment at: lib/Analysis/ValueTracking.cpp:740
@@ -736,1 +739,3 @@
+      computeKnownBitsFromRangeMetadata(*MD, KnownZero);
+    }
     if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(I)) {
----------------
We don't need {} around a single-statement if body.

http://reviews.llvm.org/D4187