Fast-isel is now *minimally* functional. Add a testcase to

demonstrate the extent of its capabilities. Note that it
only attempts to operate on one of the blocks in this
testcase.

llvm-svn: 55016

1 files changed, 17 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/fast-isel.ll b/llvm/test/CodeGen/X86/fast-isel.ll
new file mode 100644
index 00000000000..36c5a2dca3b
--- /dev/null
+++ b/llvm/test/CodeGen/X86/fast-isel.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc -fast-isel | grep add | count 1
+
+; This tests very minimal fast-isel functionality.
+
+define i32 @foo(i32* %p, i32* %q) {
+entry:
+  %r = load i32* %p
+  %s = load i32* %q
+  br label %fast
+
+fast:
+  %t = add i32 %r, %s
+  br label %exit
+
+exit:
+  ret i32 %t
+}