diff --git a/test/CodeGen/X86/and-or-fold.ll b/test/CodeGen/X86/and-or-fold.ll new file mode 100644 index 00000000000..51a3ac64611 --- /dev/null +++ b/test/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 ; [#uses=1] + %tmp4 = shl uint %x, ubyte 16 ; [#uses=1] + %tmp5 = and uint %tmp4, 16711680 ; [#uses=1] + %tmp6 = or uint %tmp2, %tmp5 ; [#uses=1] + ret uint %tmp6 +} +