[Orc][lli] Add a very simple Orc-based lazy JIT to lli.

This ensures that we're building and testing the CompileOnDemand layer, at least
in a basic way.

Currently x86-64 only, and with limited to no library calls enabled (depending
on host platform). Patches welcome. ;)

To enable access to the lazy JIT, this patch replaces the '-use-orcmcjit' lli
option with a new option:
'-jit-kind={ mcjit | orc-mcjit | orc-lazy }'.

All regression tests are updated to use the new option, and one trivial test of
the new lazy JIT is added.

llvm-svn: 233182

1 files changed, 24 insertions, 0 deletions

diff --git a/llvm/test/ExecutionEngine/OrcMCJIT/load-object-a.ll b/llvm/test/ExecutionEngine/OrcMCJIT/load-object-a.ll
new file mode 100644
index 00000000000..abd470df547
--- /dev/null
+++ b/llvm/test/ExecutionEngine/OrcMCJIT/load-object-a.ll
@@ -0,0 +1,24 @@
+; This first line will generate the .o files for the next run line
+; RUN: rm -rf %t.cachedir %t.cachedir2 %t.cachedir3
+; RUN: mkdir -p %t.cachedir %t.cachedir2 %t.cachedir3
+; RUN: %lli -jit-kind=orc-mcjit -extra-module=%p/Inputs/multi-module-b.ll -extra-module=%p/Inputs/multi-module-c.ll -enable-cache-manager -object-cache-dir=%t.cachedir %s
+
+; Collect generated objects.
+; RUN: find %t.cachedir -type f -name 'multi-module-?.o' -exec mv -v '{}' %t.cachedir2 ';'
+
+; This line tests MCJIT object loading
+; RUN: %lli -jit-kind=orc-mcjit -extra-object=%t.cachedir2/multi-module-b.o -extra-object=%t.cachedir2/multi-module-c.o %s
+
+; These lines put the object files into an archive
+; RUN: llvm-ar r %t.cachedir3/load-object.a %t.cachedir2/multi-module-b.o
+; RUN: llvm-ar r %t.cachedir3/load-object.a %t.cachedir2/multi-module-c.o
+
+; This line test MCJIT archive loading
+; RUN: %lli -jit-kind=orc-mcjit -extra-archive=%t.cachedir3/load-object.a %s
+
+declare i32 @FB()
+
+define i32 @main() {
+  %r = call i32 @FB( )   ; <i32> [#uses=1]
+  ret i32 %r
+}