1 files changed, 82 insertions, 0 deletions
diff --git a/llvm/test/Transforms/ConstantMerge/dont-merge.ll b/llvm/test/Transforms/ConstantMerge/dont-merge.ll
new file mode 100644
index 00000000000..21e390785df
--- /dev/null
+++ b/llvm/test/Transforms/ConstantMerge/dont-merge.ll
@@ -0,0 +1,82 @@
+; RUN: opt < %s -constmerge -S | FileCheck %s
+
+; Don't merge constants with specified sections.
+
+@T1G1 = internal constant i32 1, section "foo"
+@T1G2 = internal constant i32 1, section "bar"
+@T1G3 = internal constant i32 1, section "bar"
+
+; CHECK: @T1G1
+; CHECK: @T1G2
+; CHECK: @T1G3
+
+define void @test1(i32** %P1, i32** %P2, i32** %P3) {
+        store i32* @T1G1, i32** %P1
+        store i32* @T1G2, i32** %P2
+        store i32* @T1G3, i32** %P3
+        ret void
+}
+
+@T2a = internal constant i32 224
+@T2b = internal addrspace(30) constant i32 224
+
+; CHECK: @T2a
+; CHECK: @T2b
+
+define void @test2(i32** %P1, i32 addrspace(30)** %P2) {
+        store i32* @T2a, i32** %P1
+        store i32 addrspace(30)*  @T2b, i32 addrspace(30)** %P2
+        ret void
+}
+
+; PR8144 - Don't merge globals marked attribute(used)
+; CHECK: @T3A = 
+; CHECK: @T3B = 
+
+@T3A = internal constant i32 0
+@T3B = internal constant i32 0
+@llvm.used = appending global [2 x i32*] [i32* @T3A, i32* @T3B], section
+"llvm.metadata"
+
+define void @test3() {
+  call void asm sideeffect "T3A, T3B",""() ; invisible use of T3A and T3B
+  ret void
+}
+
+; Don't merge constants with !type annotations.
+
+@T4A1 = internal constant i32 2, !type !0
+@T4A2 = internal unnamed_addr constant i32 2, !type !1
+
+@T4B1 = internal constant i32 3, !type !0
+@T4B2 = internal unnamed_addr constant i32 3, !type !0
+
+@T4C1 = internal constant i32 4, !type !0
+@T4C2 = unnamed_addr constant i32 4
+
+@T4D1 = unnamed_addr constant i32 5, !type !0
+@T4D2 = internal constant i32 5
+
+!0 = !{i64 0, !"typeinfo name for A"}
+!1 = !{i64 0, !"typeinfo name for B"}
+
+; CHECK: @T4A1
+; CHECK: @T4A2
+; CHECK: @T4B1
+; CHECK: @T4B2
+; CHECK: @T4C1
+; CHECK: @T4C2
+; CHECK: @T4D1
+; CHECK: @T4D2
+
+define void @test4(i32** %P1, i32** %P2, i32** %P3, i32** %P4, i32** %P5, i32** %P6, i32** %P7, i32** %P8) {
+        store i32* @T4A1, i32** %P1
+        store i32* @T4A2, i32** %P2
+        store i32* @T4B1, i32** %P3
+        store i32* @T4B2, i32** %P4
+        store i32* @T4C1, i32** %P5
+        store i32* @T4C2, i32** %P6
+        store i32* @T4D1, i32** %P7
+        store i32* @T4D2, i32** %P8
+        ret void
+}