1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; Test shortening of NILL to NILF when the result is used as a rotate amount. 3; 4; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 5 6; Test 32-bit rotate. 7define i32 @f1(i32 %val, i32 %amt) { 8; CHECK-LABEL: f1: 9; CHECK: # %bb.0: 10; CHECK-NEXT: nill %r3, 15 11; CHECK-NEXT: rll %r2, %r2, 0(%r3) 12; CHECK-NEXT: br %r14 13 %mod = urem i32 %amt, 16 14 15 %inv = sub i32 32, %mod 16 %parta = shl i32 %val, %mod 17 %partb = lshr i32 %val, %inv 18 19 %rotl = or i32 %parta, %partb 20 21 ret i32 %rotl 22} 23 24; Test 64-bit rotate. 25define i64 @f2(i64 %val, i64 %amt) { 26; CHECK-LABEL: f2: 27; CHECK: # %bb.0: 28; CHECK-NEXT: nill %r3, 31 29; CHECK-NEXT: rllg %r2, %r2, 0(%r3) 30; CHECK-NEXT: br %r14 31 %mod = urem i64 %amt, 32 32 33 %inv = sub i64 64, %mod 34 %parta = shl i64 %val, %mod 35 %partb = lshr i64 %val, %inv 36 37 %rotl = or i64 %parta, %partb 38 39 ret i64 %rotl 40} 41