1 ; All of these ands and shifts should be folded into rlw[i]nm instructions 2 ; RUN: llc < %s -march=ppc32 -o %t 3 ; RUN: not grep and %t 4 ; RUN: not grep srawi %t 5 ; RUN: not grep srwi %t 6 ; RUN: not grep slwi %t 7 ; RUN: grep rlwnm %t | count 1 8 ; RUN: grep rlwinm %t | count 1 9 10 define i32 @test1(i32 %X, i32 %Y) { 11 entry: 12 %tmp = trunc i32 %Y to i8 ; <i8> [#uses=2] 13 %tmp1 = shl i32 %X, %Y ; <i32> [#uses=1] 14 %tmp2 = sub i32 32, %Y ; <i8> [#uses=1] 15 %tmp3 = lshr i32 %X, %tmp2 ; <i32> [#uses=1] 16 %tmp4 = or i32 %tmp1, %tmp3 ; <i32> [#uses=1] 17 %tmp6 = and i32 %tmp4, 127 ; <i32> [#uses=1] 18 ret i32 %tmp6 19 } 20 21 define i32 @test2(i32 %X) { 22 entry: 23 %tmp1 = lshr i32 %X, 27 ; <i32> [#uses=1] 24 %tmp2 = shl i32 %X, 5 ; <i32> [#uses=1] 25 %tmp2.masked = and i32 %tmp2, 96 ; <i32> [#uses=1] 26 %tmp5 = or i32 %tmp1, %tmp2.masked ; <i32> [#uses=1] 27 ret i32 %tmp5 28 } 29
