| Nicolas Capens | 9cf8d18 | 2018-10-12 02:08:06 +0000 | [diff] [blame] | 1 | ; Test 128-bit floating-point comparison. The tests assume a z10 implementation |
| 2 | ; of select, using conditional branches rather than LOCGR. |
| 3 | ; |
| 4 | ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s |
| 5 | |
| 6 | ; There is no memory form of 128-bit comparison. |
| 7 | define i64 @f1(i64 %a, i64 %b, fp128 *%ptr, float %f2) { |
| 8 | ; CHECK-LABEL: f1: |
| 9 | ; CHECK-DAG: lxebr %f0, %f0 |
| 10 | ; CHECK-DAG: ld %f1, 0(%r4) |
| 11 | ; CHECK-DAG: ld %f3, 8(%r4) |
| 12 | ; CHECK: cxbr %f1, %f0 |
| 13 | ; CHECK-NEXT: ber %r14 |
| 14 | ; CHECK: lgr %r2, %r3 |
| 15 | ; CHECK: br %r14 |
| 16 | %f2x = fpext float %f2 to fp128 |
| 17 | %f1 = load fp128, fp128 *%ptr |
| 18 | %cond = fcmp oeq fp128 %f1, %f2x |
| 19 | %res = select i1 %cond, i64 %a, i64 %b |
| 20 | ret i64 %res |
| 21 | } |
| 22 | |
| 23 | ; Check comparison with zero. |
| 24 | define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) { |
| 25 | ; CHECK-LABEL: f2: |
| 26 | ; CHECK: ld %f0, 0(%r4) |
| 27 | ; CHECK: ld %f2, 8(%r4) |
| 28 | ; CHECK: ltxbr %f0, %f0 |
| 29 | ; CHECK-NEXT: ber %r14 |
| 30 | ; CHECK: lgr %r2, %r3 |
| 31 | ; CHECK: br %r14 |
| 32 | %f = load fp128, fp128 *%ptr |
| 33 | %cond = fcmp oeq fp128 %f, 0xL00000000000000000000000000000000 |
| 34 | %res = select i1 %cond, i64 %a, i64 %b |
| 35 | ret i64 %res |
| 36 | } |
