| Richard Sandiford | ff6c5a5 | 2013-07-19 16:12:08 +0000 | [diff] [blame] | 1 | ; Test three-operand shifts. |
| 2 | ; |
| 3 | ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s |
| 4 | |
| 5 | ; Check that we use SLLK over SLL where useful. |
| 6 | define i32 @f1(i32 %a, i32 %b, i32 %amt) { |
| 7 | ; CHECK-LABEL: f1: |
| 8 | ; CHECK: sllk %r2, %r3, 15(%r4) |
| 9 | ; CHECK: br %r14 |
| 10 | %add = add i32 %amt, 15 |
| 11 | %shift = shl i32 %b, %add |
| 12 | ret i32 %shift |
| 13 | } |
| 14 | |
| 15 | ; Check that we use SLL over SLLK where possible. |
| 16 | define i32 @f2(i32 %a, i32 %amt) { |
| 17 | ; CHECK-LABEL: f2: |
| 18 | ; CHECK: sll %r2, 15(%r3) |
| 19 | ; CHECK: br %r14 |
| 20 | %add = add i32 %amt, 15 |
| 21 | %shift = shl i32 %a, %add |
| 22 | ret i32 %shift |
| 23 | } |
| 24 | |
| 25 | ; Check that we use SRLK over SRL where useful. |
| 26 | define i32 @f3(i32 %a, i32 %b, i32 %amt) { |
| 27 | ; CHECK-LABEL: f3: |
| 28 | ; CHECK: srlk %r2, %r3, 15(%r4) |
| 29 | ; CHECK: br %r14 |
| 30 | %add = add i32 %amt, 15 |
| 31 | %shift = lshr i32 %b, %add |
| 32 | ret i32 %shift |
| 33 | } |
| 34 | |
| 35 | ; Check that we use SRL over SRLK where possible. |
| 36 | define i32 @f4(i32 %a, i32 %amt) { |
| 37 | ; CHECK-LABEL: f4: |
| 38 | ; CHECK: srl %r2, 15(%r3) |
| 39 | ; CHECK: br %r14 |
| 40 | %add = add i32 %amt, 15 |
| 41 | %shift = lshr i32 %a, %add |
| 42 | ret i32 %shift |
| 43 | } |
| 44 | |
| 45 | ; Check that we use SRAK over SRA where useful. |
| 46 | define i32 @f5(i32 %a, i32 %b, i32 %amt) { |
| 47 | ; CHECK-LABEL: f5: |
| 48 | ; CHECK: srak %r2, %r3, 15(%r4) |
| 49 | ; CHECK: br %r14 |
| 50 | %add = add i32 %amt, 15 |
| 51 | %shift = ashr i32 %b, %add |
| 52 | ret i32 %shift |
| 53 | } |
| 54 | |
| 55 | ; Check that we use SRA over SRAK where possible. |
| 56 | define i32 @f6(i32 %a, i32 %amt) { |
| 57 | ; CHECK-LABEL: f6: |
| 58 | ; CHECK: sra %r2, 15(%r3) |
| 59 | ; CHECK: br %r14 |
| 60 | %add = add i32 %amt, 15 |
| 61 | %shift = ashr i32 %a, %add |
| 62 | ret i32 %shift |
| 63 | } |