[LTO] Add a test to ensure we handle basic type merging correctly.

llvm-svn: 266896

2 files changed, 34 insertions, 0 deletions

diff --git a/lld/test/ELF/lto/Inputs/type-merge.ll b/lld/test/ELF/lto/Inputs/type-merge.ll
new file mode 100644
index 00000000000..c31642105f3
--- /dev/null
+++ b/lld/test/ELF/lto/Inputs/type-merge.ll
@@ -0,0 +1,8 @@
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @zed() {
+  call void @bar()
+  ret void
+}
+declare void @bar()
diff --git a/lld/test/ELF/lto/type-merge.ll b/lld/test/ELF/lto/type-merge.ll
new file mode 100644
index 00000000000..98db53970b0
--- /dev/null
+++ b/lld/test/ELF/lto/type-merge.ll
@@ -0,0 +1,26 @@
+; REQUIRES: x86
+; RUN: llvm-as %s -o %t.o
+; RUN: llvm-as %p/Inputs/type-merge.ll -o %t2.o
+; RUN: ld.lld -m elf_x86_64 %t.o %t2.o -o %t -shared -save-temps
+; RUN: llvm-dis < %t.lto.bc | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @foo()  {
+  call void @bar(i8* null)
+  ret void
+}
+declare void @bar(i8*)
+
+; CHECK:      define void @foo() {
+; CHECK-NEXT:   call void @bar(i8* null)
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+; CHECK: declare void @bar(i8*)
+
+; CHECK:      define void @zed() {
+; CHECK-NEXT:   call void bitcast (void (i8*)* @bar to void ()*)()
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }