From 044fd8aa9450f9c4ac31a3f3bdf0ca567d1d33b4 Mon Sep 17 00:00:00 2001
From: Evgeniy Stepanov <eugeni.stepanov@gmail.com>
Date: Wed, 16 Jan 2013 14:41:46 +0000
Subject: [PATCH] Allow vectors in CreatePointerCast of constants.

llvm-svn: 172615
---
 lib/IR/Constants.cpp           |  7 ++++---
 unittests/IR/ConstantsTest.cpp | 30 ++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/lib/IR/Constants.cpp b/lib/IR/Constants.cpp
index 93275549b18..e984aaca33b 100644
--- a/lib/IR/Constants.cpp
+++ b/lib/IR/Constants.cpp
@@ -1465,10 +1465,11 @@ Constant *ConstantExpr::getTruncOrBitCast(Constant *C, Type *Ty) {
 }
 
 Constant *ConstantExpr::getPointerCast(Constant *S, Type *Ty) {
-  assert(S->getType()->isPointerTy() && "Invalid cast");
-  assert((Ty->isIntegerTy() || Ty->isPointerTy()) && "Invalid cast");
+  assert(S->getType()->isPtrOrPtrVectorTy() && "Invalid cast");
+  assert((Ty->isIntOrIntVectorTy() || Ty->isPtrOrPtrVectorTy()) &&
+          "Invalid cast");
 
-  if (Ty->isIntegerTy())
+  if (Ty->isIntOrIntVectorTy())
     return getPtrToInt(S, Ty);
   return getBitCast(S, Ty);
 }
diff --git a/unittests/IR/ConstantsTest.cpp b/unittests/IR/ConstantsTest.cpp
index be34c1e2a1a..db783f72d46 100644
--- a/unittests/IR/ConstantsTest.cpp
+++ b/unittests/IR/ConstantsTest.cpp
@@ -121,6 +121,36 @@ TEST(ConstantsTest, FP128Test) {
   EXPECT_TRUE(isa<ConstantFP>(X));
 }
 
+TEST(ConstantsTest, PointerCast) {
+  LLVMContext &C(getGlobalContext());
+  Type *Int8PtrTy = Type::getInt8PtrTy(C);
+  Type *Int32PtrTy = Type::getInt32PtrTy(C);
+  Type *Int64Ty = Type::getInt64Ty(C);
+  VectorType *Int8PtrVecTy = VectorType::get(Int8PtrTy, 4);
+  VectorType *Int32PtrVecTy = VectorType::get(Int32PtrTy, 4);
+  VectorType *Int64VecTy = VectorType::get(Int64Ty, 4);
+
+  // ptrtoint i8* to i64
+  EXPECT_EQ(Constant::getNullValue(Int64Ty),
+            ConstantExpr::getPointerCast(
+              Constant::getNullValue(Int8PtrTy), Int64Ty));
+
+  // bitcast i8* to i32*
+  EXPECT_EQ(Constant::getNullValue(Int32PtrTy),
+            ConstantExpr::getPointerCast(
+              Constant::getNullValue(Int8PtrTy), Int32PtrTy));
+
+  // ptrtoint <4 x i8*> to <4 x i64>
+  EXPECT_EQ(Constant::getNullValue(Int64VecTy),
+            ConstantExpr::getPointerCast(
+              Constant::getNullValue(Int8PtrVecTy), Int64VecTy));
+
+  // bitcast <4 x i8*> to <4 x i32*>
+  EXPECT_EQ(Constant::getNullValue(Int32PtrVecTy),
+            ConstantExpr::getPointerCast(
+              Constant::getNullValue(Int8PtrVecTy), Int32PtrVecTy));
+}
+
 #define CHECK(x, y) {                                           \
     std::string __s;                                            \
     raw_string_ostream __o(__s);                                \