1 ; All of these ands and shifts should be folded into rlwimi's 2 ; RUN: llc < %s -march=ppc32 -o %t 3 ; RUN: not grep mulhwu %t 4 ; RUN: not grep srawi %t 5 ; RUN: not grep add %t 6 ; RUN: grep mulhw %t | count 1 7 8 define i32 @mulhs(i32 %a, i32 %b) nounwind { 9 entry: 10 %tmp.1 = sext i32 %a to i64 ; <i64> [#uses=1] 11 %tmp.3 = sext i32 %b to i64 ; <i64> [#uses=1] 12 %tmp.4 = mul i64 %tmp.3, %tmp.1 ; <i64> [#uses=1] 13 %tmp.6 = lshr i64 %tmp.4, 32 ; <i64> [#uses=1] 14 %tmp.7 = trunc i64 %tmp.6 to i32 ; <i32> [#uses=1] 15 ret i32 %tmp.7 16 } 17 18
