[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, 21 insertions, 0 deletions

diff --git a/llvm/test/ExecutionEngine/OrcMCJIT/2003-08-21-EnvironmentTest.ll b/llvm/test/ExecutionEngine/OrcMCJIT/2003-08-21-EnvironmentTest.ll
new file mode 100644
index 00000000000..88dd46e2d63
--- /dev/null
+++ b/llvm/test/ExecutionEngine/OrcMCJIT/2003-08-21-EnvironmentTest.ll
@@ -0,0 +1,21 @@
+; RUN: %lli -jit-kind=orc-mcjit %s > /dev/null
+
+;
+; Regression Test: EnvironmentTest.ll
+;
+; Description:
+;	This is a regression test that verifies that the JIT passes the
+;	environment to the main() function.
+;
+
+
+declare i32 @strlen(i8*)
+
+define i32 @main(i32 %argc.1, i8** %argv.1, i8** %envp.1) {
+	%tmp.2 = load i8*, i8** %envp.1		; <i8*> [#uses=1]
+	%tmp.3 = call i32 @strlen( i8* %tmp.2 )		; <i32> [#uses=1]
+	%T = icmp eq i32 %tmp.3, 0		; <i1> [#uses=1]
+	%R = zext i1 %T to i32		; <i32> [#uses=1]
+	ret i32 %R
+}
+