[LTO] Test lto passes are actually working.

This should have been part of r263761.

llvm-svn: 263763

diff --git a/lld/test/ELF/lto/ctors.ll b/lld/test/ELF/lto/ctors.ll
index 629e503..aaf9a13 100644 (file)
--- a/lld/test/ELF/lto/ctors.ll
+++ b/lld/test/ELF/lto/ctors.ll
@@ -8,6 +8,7 @@ target triple = "x86_64-unknown-linux-gnu"
 
 @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @ctor, i8* null }]
 define void @ctor() {
+  call void asm "nop", ""()
   ret void
 }
 

diff --git a/lld/test/ELF/lto/ltopasses-basic.ll b/lld/test/ELF/lto/ltopasses-basic.ll
new file mode 100644 (file)
index 0000000..ce56539
--- /dev/null
+++ b/lld/test/ELF/lto/ltopasses-basic.ll
@@ -0,0 +1,16 @@
+; REQUIRES: x86
+; RUN: rm -f %t %t.lto.bc %t.lto.opt.bc %t.lto.o
+; RUN: llvm-as %s -o %t.o
+; RUN: ld.lld -m elf_x86_64 %t.o -o %t.so -save-temps -shared
+; RUN: llvm-dis %t.so.lto.opt.bc -o - | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @ctor, i8* null }]
+define void @ctor() {
+  ret void
+}
+
+; `@ctor` doesn't do anything and so the optimizer should kill it, leaving no ctors
+; CHECK: @llvm.global_ctors = appending global [0 x { i32, void ()*, i8* }] zeroinitializer