New testcase

llvm-svn: 30378

1 files changed, 13 insertions, 0 deletions

diff --git a/llvm/test/Regression/CodeGen/X86/and-or-fold.ll b/llvm/test/Regression/CodeGen/X86/and-or-fold.ll
new file mode 100644
index 00000000000..51a3ac64611
--- /dev/null
+++ b/llvm/test/Regression/CodeGen/X86/and-or-fold.ll
@@ -0,0 +1,13 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep and | wc -l | grep 1
+
+; The dag combiner should fold together (x&127)|(y&16711680) -> (x|y)&c1
+; in this case.
+uint %test6(uint %x, ushort %y) {
+        %tmp1 = cast ushort %y to uint
+        %tmp2 = and uint %tmp1, 127             ; <uint> [#uses=1]
+        %tmp4 = shl uint %x, ubyte 16           ; <uint> [#uses=1]
+        %tmp5 = and uint %tmp4, 16711680                ; <uint> [#uses=1]
+        %tmp6 = or uint %tmp2, %tmp5            ; <uint> [#uses=1]
+        ret uint %tmp6
+}
+