[llvm-commits] CVS: llvm/lib/Transforms/Utils/Local.cpp

[Chris Lattner]

Changes in directory llvm/lib/Transforms/Utils:

Local.cpp updated: 1.43 -> 1.44
---
Log message:

Constant fold llvm.sqrt


---
Diffs of the changes:  (+9 -1)

 Local.cpp |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletion(-)


Index: llvm/lib/Transforms/Utils/Local.cpp
diff -u llvm/lib/Transforms/Utils/Local.cpp:1.43 llvm/lib/Transforms/Utils/Local.cpp:1.44
--- llvm/lib/Transforms/Utils/Local.cpp:1.43	Mon Sep 26 00:27:10 2005
+++ llvm/lib/Transforms/Utils/Local.cpp	Tue Sep 27 20:34:32 2005
@@ -240,7 +240,9 @@
   const std::string &Name = F->getName();
 
   switch (F->getIntrinsicID()) {
-  case Intrinsic::isunordered: return true;
+  case Intrinsic::isunordered:
+  case Intrinsic::sqrt:
+    return true;
   default: break;
   }
 
@@ -321,6 +323,12 @@
             return ConstantFP::get(Ty, log(V));
           else if (Name == "log10" && V > 0)
             return ConstantFoldFP(log10, V, Ty);
+          else if (Name == "llvm.sqrt") {
+            if (V >= -0.0)
+              return ConstantFP::get(Ty, sqrt(V));
+            else // Undefined
+              return ConstantFP::get(Ty, 0.0);
+          }
           break;
         case 's':
           if (Name == "sin")