-; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
-; RUN: grep {call.*llvm.bswap} | count 5
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
+
+; RUN: opt < %s -instcombine -S | \
+; RUN: grep "call.*llvm.bswap" | count 6
define i32 @test1(i32 %i) {
%tmp1 = lshr i32 %i, 24 ; <i32> [#uses=1]
%retval = trunc i32 %tmp6.upgrd.4 to i16 ; <i16> [#uses=1]
ret i16 %retval
}
+
+; PR2842
+define i32 @test6(i32 %x) nounwind readnone {
+ %tmp = shl i32 %x, 16 ; <i32> [#uses=1]
+ %x.mask = and i32 %x, 65280 ; <i32> [#uses=1]
+ %tmp1 = lshr i32 %x, 16 ; <i32> [#uses=1]
+ %tmp2 = and i32 %tmp1, 255 ; <i32> [#uses=1]
+ %tmp3 = or i32 %x.mask, %tmp ; <i32> [#uses=1]
+ %tmp4 = or i32 %tmp3, %tmp2 ; <i32> [#uses=1]
+ %tmp5 = shl i32 %tmp4, 8 ; <i32> [#uses=1]
+ %tmp6 = lshr i32 %x, 24 ; <i32> [#uses=1]
+ %tmp7 = or i32 %tmp5, %tmp6 ; <i32> [#uses=1]
+ ret i32 %tmp7
+}
+