| ; Test f128 signaling comparisons on z14. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s |
| |
| ; There is no memory form of 128-bit comparison. |
| define i64 @f1(i64 %a, i64 %b, fp128 *%ptr1, fp128 *%ptr2) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4) |
| ; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r5) |
| ; CHECK: wfkxb [[REG1]], [[REG2]] |
| ; CHECK-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load fp128, fp128 *%ptr1 |
| %f2 = load fp128, fp128 *%ptr2 |
| %cond = call i1 @llvm.experimental.constrained.fcmps.f128( |
| fp128 %f1, fp128 %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check comparison with zero -- it is not worthwhile to copy to |
| ; FP pairs just so we can use LTXBR, so simply load up a zero. |
| define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) #0 { |
| ; CHECK-LABEL: f2: |
| ; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4) |
| ; CHECK-DAG: vzero [[REG2:%v[0-9]+]] |
| ; CHECK: wfkxb [[REG1]], [[REG2]] |
| ; CHECK-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %f = load fp128, fp128 *%ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmps.f128( |
| fp128 %f, fp128 0xL00000000000000000000000000000000, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| attributes #0 = { strictfp } |
| |
| declare i1 @llvm.experimental.constrained.fcmps.f128(fp128, fp128, metadata, metadata) |
| |
