| Richard Sandiford | 7d6a453 | 2013-07-19 16:32:12 +0000 | [diff] [blame] | 1 | ; Test 64-bit addition in which the second operand is constant and in which |
| 2 | ; three-operand forms are available. |
| 3 | ; |
| 4 | ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s |
| 5 | |
| 6 | ; Check additions of 1. |
| 7 | define i64 @f1(i64 %a, i64 %b) { |
| 8 | ; CHECK-LABEL: f1: |
| 9 | ; CHECK: {{aghik %r2, %r3, 1|la %r2, 1\(%r3\)}} |
| 10 | ; CHECK: br %r14 |
| 11 | %add = add i64 %b, 1 |
| 12 | ret i64 %add |
| 13 | } |
| 14 | |
| 15 | ; Check the high end of the AGHIK range. |
| 16 | define i64 @f2(i64 %a, i64 %b) { |
| 17 | ; CHECK-LABEL: f2: |
| 18 | ; CHECK: aghik %r2, %r3, 32767 |
| 19 | ; CHECK: br %r14 |
| 20 | %add = add i64 %b, 32767 |
| 21 | ret i64 %add |
| 22 | } |
| 23 | |
| 24 | ; Check the next value up, which must use AGFI instead. |
| 25 | define i64 @f3(i64 %a, i64 %b) { |
| 26 | ; CHECK-LABEL: f3: |
| 27 | ; CHECK: {{agfi %r[0-5], 32768|lay %r2, 32768\(%r3\)}} |
| 28 | ; CHECK: br %r14 |
| 29 | %add = add i64 %b, 32768 |
| 30 | ret i64 %add |
| 31 | } |
| 32 | |
| 33 | ; Check the high end of the negative AGHIK range. |
| 34 | define i64 @f4(i64 %a, i64 %b) { |
| 35 | ; CHECK-LABEL: f4: |
| 36 | ; CHECK: aghik %r2, %r3, -1 |
| 37 | ; CHECK: br %r14 |
| 38 | %add = add i64 %b, -1 |
| 39 | ret i64 %add |
| 40 | } |
| 41 | |
| 42 | ; Check the low end of the AGHIK range. |
| 43 | define i64 @f5(i64 %a, i64 %b) { |
| 44 | ; CHECK-LABEL: f5: |
| 45 | ; CHECK: aghik %r2, %r3, -32768 |
| 46 | ; CHECK: br %r14 |
| 47 | %add = add i64 %b, -32768 |
| 48 | ret i64 %add |
| 49 | } |
| 50 | |
| 51 | ; Check the next value down, which must use AGFI instead. |
| 52 | define i64 @f6(i64 %a, i64 %b) { |
| 53 | ; CHECK-LABEL: f6: |
| 54 | ; CHECK: {{agfi %r[0-5], -32769|lay %r2, -32769\(%r3\)}} |
| 55 | ; CHECK: br %r14 |
| 56 | %add = add i64 %b, -32769 |
| 57 | ret i64 %add |
| 58 | } |
| 59 | |
| 60 | ; Check that AGHI is still used in obvious cases. |
| 61 | define i64 @f7(i64 %a) { |
| 62 | ; CHECK-LABEL: f7: |
| 63 | ; CHECK: aghi %r2, 32000 |
| 64 | ; CHECK: br %r14 |
| 65 | %add = add i64 %a, 32000 |
| 66 | ret i64 %add |
| 67 | } |