Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 1 | ; Test 64-bit XORs in which the second operand is constant. |
| 2 | ; |
| 3 | ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| 4 | |
| 5 | ; Check the lowest useful XILF value. |
| 6 | define i64 @f1(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 7 | ; CHECK-LABEL: f1: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 8 | ; CHECK: xilf %r2, 1 |
| 9 | ; CHECK: br %r14 |
| 10 | %xor = xor i64 %a, 1 |
| 11 | ret i64 %xor |
| 12 | } |
| 13 | |
| 14 | ; Check the high end of the XILF range. |
| 15 | define i64 @f2(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 16 | ; CHECK-LABEL: f2: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 17 | ; CHECK: xilf %r2, 4294967295 |
| 18 | ; CHECK: br %r14 |
| 19 | %xor = xor i64 %a, 4294967295 |
| 20 | ret i64 %xor |
| 21 | } |
| 22 | |
| 23 | ; Check the lowest useful XIHF value, which is one up from the above. |
| 24 | define i64 @f3(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 25 | ; CHECK-LABEL: f3: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 26 | ; CHECK: xihf %r2, 1 |
| 27 | ; CHECK: br %r14 |
| 28 | %xor = xor i64 %a, 4294967296 |
| 29 | ret i64 %xor |
| 30 | } |
| 31 | |
| 32 | ; Check the next value up again, which needs a combination of XIHF and XILF. |
| 33 | define i64 @f4(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 34 | ; CHECK-LABEL: f4: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 35 | ; CHECK: xihf %r2, 1 |
| 36 | ; CHECK: xilf %r2, 4294967295 |
| 37 | ; CHECK: br %r14 |
| 38 | %xor = xor i64 %a, 8589934591 |
| 39 | ret i64 %xor |
| 40 | } |
| 41 | |
| 42 | ; Check the high end of the XIHF range. |
| 43 | define i64 @f5(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 44 | ; CHECK-LABEL: f5: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 45 | ; CHECK: xihf %r2, 4294967295 |
| 46 | ; CHECK: br %r14 |
| 47 | %xor = xor i64 %a, -4294967296 |
| 48 | ret i64 %xor |
| 49 | } |
| 50 | |
| 51 | ; Check the next value up, which again must use XIHF and XILF. |
| 52 | define i64 @f6(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 53 | ; CHECK-LABEL: f6: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 54 | ; CHECK: xihf %r2, 4294967295 |
| 55 | ; CHECK: xilf %r2, 1 |
| 56 | ; CHECK: br %r14 |
| 57 | %xor = xor i64 %a, -4294967295 |
| 58 | ret i64 %xor |
| 59 | } |
| 60 | |
| 61 | ; Check full bitwise negation |
| 62 | define i64 @f7(i64 %a) { |
Stephen Lin | d24ab20 | 2013-07-14 06:24:09 +0000 | [diff] [blame] | 63 | ; CHECK-LABEL: f7: |
Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 64 | ; CHECK: xihf %r2, 4294967295 |
| 65 | ; CHECK: xilf %r2, 4294967295 |
| 66 | ; CHECK: br %r14 |
| 67 | %xor = xor i64 %a, -1 |
| 68 | ret i64 %xor |
| 69 | } |