| Ulrich Weigand | f2968d5 | 2017-07-17 17:44:20 +0000 | [diff] [blame] | 1 | ; Test f128 comparisons on z14. |
| 2 | ; |
| 3 | ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s |
| 4 | |
| 5 | ; There is no memory form of 128-bit comparison. |
| 6 | define i64 @f1(i64 %a, i64 %b, fp128 *%ptr1, fp128 *%ptr2) { |
| 7 | ; CHECK-LABEL: f1: |
| 8 | ; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4) |
| 9 | ; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r5) |
| 10 | ; CHECK: wfcxb [[REG1]], [[REG2]] |
| 11 | ; CHECK-NEXT: locgrne %r2, %r3 |
| 12 | ; CHECK: br %r14 |
| 13 | %f1 = load fp128, fp128 *%ptr1 |
| 14 | %f2 = load fp128, fp128 *%ptr2 |
| 15 | %cond = fcmp oeq fp128 %f1, %f2 |
| 16 | %res = select i1 %cond, i64 %a, i64 %b |
| 17 | ret i64 %res |
| 18 | } |
| 19 | |
| 20 | ; Check comparison with zero -- it is not worthwhile to copy to |
| 21 | ; FP pairs just so we can use LTXBR, so simply load up a zero. |
| 22 | define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) { |
| 23 | ; CHECK-LABEL: f2: |
| 24 | ; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4) |
| 25 | ; CHECK-DAG: vzero [[REG2:%v[0-9]+]] |
| 26 | ; CHECK: wfcxb [[REG1]], [[REG2]] |
| 27 | ; CHECK-NEXT: locgrne %r2, %r3 |
| 28 | ; CHECK: br %r14 |
| 29 | %f = load fp128, fp128 *%ptr |
| 30 | %cond = fcmp oeq fp128 %f, 0xL00000000000000000000000000000000 |
| 31 | %res = select i1 %cond, i64 %a, i64 %b |
| 32 | ret i64 %res |
| 33 | } |