| ; Test use of RISBG vs RISBGN on zEC12. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=zEC12 | FileCheck %s |
| |
| ; On zEC12, we generally prefer RISBGN. |
| define i64 @f1(i64 %a, i64 %b) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: risbgn %r2, %r3, 60, 62, 0 |
| ; CHECK: br %r14 |
| %anda = and i64 %a, -15 |
| %andb = and i64 %b, 14 |
| %or = or i64 %anda, %andb |
| ret i64 %or |
| } |
| |
| ; But we may fall back to RISBG if we can use the condition code. |
| define i64 @f2(i64 %a, i64 %b, i32* %c) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: risbg %r2, %r3, 60, 62, 0 |
| ; CHECK-NEXT: ipm |
| ; CHECK: br %r14 |
| %anda = and i64 %a, -15 |
| %andb = and i64 %b, 14 |
| %or = or i64 %anda, %andb |
| %cmp = icmp sgt i64 %or, 0 |
| %conv = zext i1 %cmp to i32 |
| store i32 %conv, i32* %c, align 4 |
| ret i64 %or |
| } |
| |
