1 files changed, 19 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fast-isel-bc.ll b/test/CodeGen/X86/fast-isel-bc.ll
new file mode 100644
index 0000000..f2696ce
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-bc.ll
@@ -0,0 +1,19 @@
+; RUN: llc < %s -O0 -march=x86-64 -mattr=+mmx | FileCheck %s
+; PR4684
+
+target datalayout =
+"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-apple-darwin9.8"
+
+declare void @func2(<1 x i64>)
+
+define void @func1() nounwind {
+
+; This isn't spectacular, but it's MMX code at -O0...
+; CHECK: movl $2, %eax
+; CHECK: movd %rax, %mm0
+; CHECK: movd %mm0, %rdi
+
+        call void @func2(<1 x i64> <i64 2>)
+        ret void
+}