1; Test 128-bit floating-point signaling comparison. The tests assume a z10 2; implementation 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. 7define i64 @f1(i64 %a, i64 %b, fp128 *%ptr, float %f2) #0 { 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: kxbr %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 = call i1 @llvm.experimental.constrained.fcmps.f128( 19 fp128 %f1, fp128 %f2x, 20 metadata !"oeq", 21 metadata !"fpexcept.strict") #0 22 %res = select i1 %cond, i64 %a, i64 %b 23 ret i64 %res 24} 25 26; Check comparison with zero - cannot use LOAD AND TEST. 27define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) #0 { 28; CHECK-LABEL: f2: 29; CHECK-DAG: ld %f0, 0(%r4) 30; CHECK-DAG: ld %f2, 8(%r4) 31; CHECK-DAG: lzxr [[REG:%f[0-9]+]] 32; CHECK-NEXT: kxbr %f0, [[REG]] 33; CHECK-NEXT: ber %r14 34; CHECK: lgr %r2, %r3 35; CHECK: br %r14 36 %f = load fp128, fp128 *%ptr 37 %cond = call i1 @llvm.experimental.constrained.fcmps.f128( 38 fp128 %f, fp128 0xL00000000000000000000000000000000, 39 metadata !"oeq", 40 metadata !"fpexcept.strict") #0 41 %res = select i1 %cond, i64 %a, i64 %b 42 ret i64 %res 43} 44 45attributes #0 = { strictfp } 46 47declare i1 @llvm.experimental.constrained.fcmps.f128(fp128, fp128, metadata, metadata) 48 49