always return true for now

Author: ro-i

llvm/include/llvm/IR/DataLayout.h

@@ -400,9 +400,7 @@ class DataLayout {
 
   /// Returns if the null pointer for this address space has an all-zero bit
   /// representation.
-  bool isNullPointerAllZeroes(unsigned AddrSpace) const {
-    return AddrSpace == 0;
-  }
+  bool isNullPointerAllZeroes(unsigned AddrSpace) const { return true; }
 
   /// Returns whether this address space has an "unstable" pointer
   /// representation. The bitwise pattern of such pointers is allowed to change

llvm/unittests/IR/DataLayoutTest.cpp

@@ -702,11 +702,11 @@ TEST(DataLayout, NonIntegralHelpers) {
 
 TEST(DataLayoutTest, IsNullPointerAllZeroes) {
   EXPECT_TRUE(DataLayout("").isNullPointerAllZeroes(0));
-  EXPECT_FALSE(DataLayout("").isNullPointerAllZeroes(1));
+  EXPECT_TRUE(DataLayout("").isNullPointerAllZeroes(1));
   EXPECT_TRUE(DataLayout("p:32:32").isNullPointerAllZeroes(0));
-  EXPECT_FALSE(DataLayout("p:32:32").isNullPointerAllZeroes(1));
+  EXPECT_TRUE(DataLayout("p:32:32").isNullPointerAllZeroes(1));
   EXPECT_TRUE(DataLayout("p:64:64").isNullPointerAllZeroes(0));
-  EXPECT_FALSE(DataLayout("p:64:64").isNullPointerAllZeroes(1));
+  EXPECT_TRUE(DataLayout("p:64:64").isNullPointerAllZeroes(1));
 }
 
 TEST(DataLayoutTest, CopyAssignmentInvalidatesStructLayout) {