From: Chris Lattner <sabre@nondot.org>
Date: Sun, 16 Jan 2005 00:37:38 +0000 (+0000)
Subject: Add support for targets that require promotions.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fb849800ea2040c188365c265421ad54fbdcf219;p=oota-llvm.git

Add support for targets that require promotions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19579 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 3250760acad..94aab323378 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -77,7 +77,12 @@ namespace llvm {
       // The common case is that we will only create one register for this
       // value.  If we have that case, create and return the virtual register.
       unsigned NV = TLI.getNumElements(VT);
-      if (NV == 1) return MakeReg(VT);
+      if (NV == 1) {
+        // If we are promoting this value, pick the next largest supported type.
+        while (!TLI.hasNativeSupportFor(VT))
+          VT = (MVT::ValueType)(VT+1);
+        return MakeReg(VT);
+      }
     
       // If this value is represented with multiple target registers, make sure
       // to create enough consequtive registers of the right (smaller) type.