| ; Test 128-bit floating-point strict comparison. The tests assume a z10 | |
| ; implementation of select, using conditional branches rather than LOCGR. | |
| ; | |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s | |
| ; There is no memory form of 128-bit comparison. | |
| define i64 @f1(i64 %a, i64 %b, ptr %ptr, float %f2) #0 { | |
| ; CHECK-LABEL: f1: | |
| ; CHECK-DAG: lxebr %f0, %f0 | |
| ; CHECK-DAG: ld %f1, 0(%r4) | |
| ; CHECK-DAG: ld %f3, 8(%r4) | |
| ; CHECK: cxbr %f1, %f0 | |
| ; CHECK-NEXT: ber %r14 | |
| ; CHECK: lgr %r2, %r3 | |
| ; CHECK: br %r14 | |
| %f2x = fpext float %f2 to fp128 | |
| %f1 = load fp128, ptr %ptr | |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f128( | |
| fp128 %f1, fp128 %f2x, | |
| metadata !"oeq", | |
| metadata !"fpexcept.strict") #0 | |
| %res = select i1 %cond, i64 %a, i64 %b | |
| ret i64 %res | |
| } | |
| ; Check comparison with zero. | |
| define i64 @f2(i64 %a, i64 %b, ptr %ptr) #0 { | |
| ; CHECK-LABEL: f2: | |
| ; CHECK: ld %f0, 0(%r4) | |
| ; CHECK: ld %f2, 8(%r4) | |
| ; CHECK: ltxbr %f0, %f0 | |
| ; CHECK-NEXT: ber %r14 | |
| ; CHECK: lgr %r2, %r3 | |
| ; CHECK: br %r14 | |
| %f = load fp128, ptr %ptr | |
| %cond = call i1 @llvm.experimental.constrained.fcmp.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.fcmp.f128(fp128, fp128, metadata, metadata) | |