LTO: Add support for multi-module bitcode files.

Differential Revision: https://reviews.llvm.org/D27313

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289621 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 15 insertions, 0 deletions

diff --git a/test/LTO/Resolution/X86/empty-bitcode.test b/test/LTO/Resolution/X86/empty-bitcode.test
new file mode 100644
index 00000000000..c98c54499ef
--- /dev/null
+++ b/test/LTO/Resolution/X86/empty-bitcode.test
@@ -0,0 +1,3 @@
+RUN: llvm-cat -o %t.o
+RUN: not llvm-lto2 -o %t2 %t.o 2>&1 | FileCheck %s
+CHECK: Bitcode file does not contain any modules
diff --git a/test/LTO/Resolution/X86/mixed_lto.ll b/test/LTO/Resolution/X86/mixed_lto.ll
index 02e6186a3f5..0302ed990e0 100644
--- a/test/LTO/Resolution/X86/mixed_lto.ll
+++ b/test/LTO/Resolution/X86/mixed_lto.ll
@@ -13,6 +13,12 @@
 ; NM1-DAG: T main
 ; NM1-DAG: U g
 
+; Do the same test again, but with the regular and thin LTO modules in the same file.
+; RUN: llvm-cat -b -o %t4.o %t2.o %t1.o
+; RUN: llvm-lto2 -o %t5.o %t4.o -r %t4.o,main,px -r %t4.o,g, -r %t4.o,g,px
+; RUN: llvm-nm %t5.o.0 | FileCheck %s --check-prefix=NM0
+; RUN: llvm-nm %t5.o.1 | FileCheck %s --check-prefix=NM1
+
 target triple = "x86_64-unknown-linux-gnu"
 define i32 @g() {
   ret i32 0
diff --git a/test/LTO/Resolution/X86/multi-thinlto.ll b/test/LTO/Resolution/X86/multi-thinlto.ll
new file mode 100644
index 00000000000..605c9694ced
--- /dev/null
+++ b/test/LTO/Resolution/X86/multi-thinlto.ll
@@ -0,0 +1,6 @@
+; RUN: opt -module-summary %s -o %t.o
+; RUN: llvm-cat -b -o %t2.o %t.o %t.o
+; RUN: not llvm-lto2 -o %t3.o %t2.o 2>&1 | FileCheck %s
+; CHECK: Expected at most one ThinLTO module per bitcode file
+
+target triple = "x86_64-unknown-linux-gnu"