PR11705, part 2: globalopt shouldn't put inttoptr/ptrtoint operations into global initializers if there's an implied extension or truncation.

llvm-svn: 147625

1 files changed, 15 insertions, 4 deletions

diff --git a/llvm/test/Transforms/GlobalOpt/ctor-list-opt-constexpr.ll b/llvm/test/Transforms/GlobalOpt/ctor-list-opt-constexpr.ll
index 204f979ed3e..e3bc473f52a 100644
--- a/llvm/test/Transforms/GlobalOpt/ctor-list-opt-constexpr.ll
+++ b/llvm/test/Transforms/GlobalOpt/ctor-list-opt-constexpr.ll
@@ -4,20 +4,31 @@ target triple = "x86_64-apple-darwin10.0.0"
 
 %0 = type { i32, void ()* }
 %struct.foo = type { i32* }
+%struct.bar = type { i128 }
 
 @G = global i32 0, align 4
 @H = global i32 0, align 4
 @X = global %struct.foo zeroinitializer, align 8
-@llvm.global_ctors = appending global [1 x %0] [%0 { i32 65535, void ()* @init }]
+@X2 = global %struct.bar zeroinitializer, align 8
+@llvm.global_ctors = appending global [2 x %0] [%0 { i32 65535, void ()* @init1 }, %0 { i32 65535, void ()* @init2 }]
 
 ; PR8710 - GlobalOpt shouldn't change the global's initializer to have this
 ; arbitrary constant expression, the code generator can't handle it.
-define internal void @init() {
+define internal void @init1() {
 entry:
   %tmp = getelementptr inbounds %struct.foo* @X, i32 0, i32 0
   store i32* inttoptr (i64 sdiv (i64 ptrtoint (i32* @G to i64), i64 ptrtoint (i32* @H to i64)) to i32*), i32** %tmp, align 8
   ret void
 }
-
-; CHECK: @init
+; CHECK: @init1
 ; CHECK: store i32*
+
+; PR11705 - ptrtoint isn't safe in general in global initializers.
+define internal void @init2() {
+entry:
+  %tmp = getelementptr inbounds %struct.bar* @X2, i32 0, i32 0
+  store i128 ptrtoint (i32* @G to i128), i128* %tmp, align 16
+  ret void
+}
+; CHECK: @init2
+; CHECK: store i128