[cfe-commits] r40782 - /cfe/trunk/CodeGen/CGExpr.cpp

[Chris Lattner]

Author: lattner
Date: Fri Aug  3 11:37:04 2007
New Revision: 40782

URL: http://llvm.org/viewvc/llvm-project?rev=40782&view=rev
Log:
implement codegen for multidest ocuvector expressions, like:

   vec2.yx = vec2; // reverse
 

Modified:
    cfe/trunk/CodeGen/CGExpr.cpp

Modified: cfe/trunk/CodeGen/CGExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/CodeGen/CGExpr.cpp?rev=40782&r1=40781&r2=40782&view=diff

==============================================================================
--- cfe/trunk/CodeGen/CGExpr.cpp (original)
+++ cfe/trunk/CodeGen/CGExpr.cpp Fri Aug  3 11:37:04 2007
@@ -427,16 +427,25 @@
   
   llvm::Value *SrcVal = Src.getVal();
   
-  // If the Src is a scalar (not a vector) it must be updating a single element.
-  if (!Ty->isVectorType()) {
+  if (const VectorType *VTy = Ty->getAsVectorType()) {
+    unsigned NumSrcElts = VTy->getNumElements();
+
+    // Extract/Insert each element.
+    for (unsigned i = 0; i != NumSrcElts; ++i) {
+      llvm::Value *Elt = llvm::ConstantInt::get(llvm::Type::Int32Ty, i);
+      Elt = Builder.CreateExtractElement(SrcVal, Elt, "tmp");
+      
+      unsigned Idx = OCUVectorComponent::getAccessedFieldNo(i, EncFields);
+      llvm::Value *OutIdx = llvm::ConstantInt::get(llvm::Type::Int32Ty, Idx);
+      Vec = Builder.CreateInsertElement(Vec, Elt, OutIdx, "tmp");
+    }
+  } else {
+    // If the Src is a scalar (not a vector) it must be updating one element.
     unsigned InIdx = OCUVectorComponent::getAccessedFieldNo(0, EncFields);
     llvm::Value *Elt = llvm::ConstantInt::get(llvm::Type::Int32Ty, InIdx);
     Vec = Builder.CreateInsertElement(Vec, SrcVal, Elt, "tmp");
-  } else {
-    
   }
   
-  
   Builder.CreateStore(Vec, Dst.getOCUVectorAddr());
 }