1 ; Test use of RISBG vs RISBGN on zEC12. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=zEC12 | FileCheck %s 4 5 ; On zEC12, we generally prefer RISBGN. 6 define i64 @f1(i64 %a, i64 %b) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: risbgn %r2, %r3, 60, 62, 0 9 ; CHECK: br %r14 10 %anda = and i64 %a, -15 11 %andb = and i64 %b, 14 12 %or = or i64 %anda, %andb 13 ret i64 %or 14 } 15 16 ; But we may fall back to RISBG if we can use the condition code. 17 define i64 @f2(i64 %a, i64 %b, i32* %c) { 18 ; CHECK-LABEL: f2: 19 ; CHECK: risbg %r2, %r3, 60, 62, 0 20 ; CHECK-NEXT: ipm 21 ; CHECK: br %r14 22 %anda = and i64 %a, -15 23 %andb = and i64 %b, 14 24 %or = or i64 %anda, %andb 25 %cmp = icmp sgt i64 %or, 0 26 %conv = zext i1 %cmp to i32 27 store i32 %conv, i32* %c, align 4 28 ret i64 %or 29 } 30 31
