commit 9db8b765cd2f5daaddd44f0f2fc446f14a3b6f05
author Chris Lattner <sabre@nondot.org> Wed Oct 31 05:07:57 2001 +0000
committer Chris Lattner <sabre@nondot.org> Wed Oct 31 05:07:57 2001 +0000
tree 82e5c30f47448eb92fafa877f91f8c71f66fa3d3
parent ae6de303fc11fbb9cf19d4d92a1bac0cb2b5c7ea

Implemented constant propogation of cast instructions

llvm-svn: 1064

llvm/lib/Transforms/Scalar/SCCP.cpp

diff --git a/llvm/lib/Transforms/Scalar/SCCP.cpp b/llvm/lib/Transforms/Scalar/SCCP.cpp
index 101e892..70d52a6 100644
--- a/llvm/lib/Transforms/Scalar/SCCP.cpp
+++ b/llvm/lib/Transforms/Scalar/SCCP.cpp
@@ -442,9 +442,10 @@
     if (VState.isOverdefined()) {        // Inherit overdefinedness of operand
       markOverdefined(I);
     } else if (VState.isConstant()) {    // Propogate constant value
-      ConstPoolVal *Result = 
-	opt::ConstantFoldUnaryInstruction(I->getOpcode(), 
-					  VState.getConstant());
+      ConstPoolVal *Result = isa<CastInst>(I)
+        ? opt::ConstantFoldCastInstruction(VState.getConstant(), I->getType())
+        : opt::ConstantFoldUnaryInstruction(I->getOpcode(), 
+                                            VState.getConstant());
 
       if (Result) {
 	// This instruction constant folds!