commit 197a338f57a9a44efd5f025ce3d462430d260016
author Chris Lattner <sabre@nondot.org> Sat Jan 09 21:44:40 2010 +0000
committer Chris Lattner <sabre@nondot.org> Sat Jan 09 21:44:40 2010 +0000
tree 73a470f651787a00f470fe43e1b0f782f76e3acf
parent dd36d328730d8c02915d0884541b45ec6ca0049d

implement codegen support for preinc as an lvalue, PR5514.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93076 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGExpr.cpp

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 2c2b76f..5809d1e 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1120,8 +1120,16 @@
                             MakeQualifiers(ExprTy));
   }
   case UnaryOperator::PreInc:
-  case UnaryOperator::PreDec:
-    return EmitUnsupportedLValue(E, "pre-inc/dec expression");
+  case UnaryOperator::PreDec: {
+    LValue LV = EmitLValue(E->getSubExpr());
+    bool isInc = E->getOpcode() == UnaryOperator::PreInc;
+    
+    if (E->getType()->isAnyComplexType())
+      EmitComplexPrePostIncDec(E, LV, isInc, true/*isPre*/);
+    else
+      EmitScalarPrePostIncDec(E, LV, isInc, true/*isPre*/);
+    return LV;
+  }
   }
 }