| ; Test 32-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 \ |
| ; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 \ |
| ; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-VECTOR %s |
| |
| declare float @foo() |
| |
| ; Check comparison with registers. |
| define i64 @f1(i64 %a, i64 %b, float %f1, float %f2) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK: cebr %f0, %f2 |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the low end of the CEB range. |
| define i64 @f2(i64 %a, i64 %b, float %f1, ptr %ptr) #0 { |
| ; CHECK-LABEL: f2: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %f2 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the high end of the aligned CEB range. |
| define i64 @f3(i64 %a, i64 %b, float %f1, ptr %base) #0 { |
| ; CHECK-LABEL: f3: |
| ; CHECK: ceb %f0, 4092(%r4) |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, ptr %base, i64 1023 |
| %f2 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the next word up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define i64 @f4(i64 %a, i64 %b, float %f1, ptr %base) #0 { |
| ; CHECK-LABEL: f4: |
| ; CHECK: aghi %r4, 4096 |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, ptr %base, i64 1024 |
| %f2 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check negative displacements, which also need separate address logic. |
| define i64 @f5(i64 %a, i64 %b, float %f1, ptr %base) #0 { |
| ; CHECK-LABEL: f5: |
| ; CHECK: aghi %r4, -4 |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, ptr %base, i64 -1 |
| %f2 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check that CEB allows indices. |
| define i64 @f6(i64 %a, i64 %b, float %f1, ptr %base, i64 %index) #0 { |
| ; CHECK-LABEL: f6: |
| ; CHECK: sllg %r1, %r5, 2 |
| ; CHECK: ceb %f0, 400(%r1,%r4) |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr1 = getelementptr float, ptr %base, i64 %index |
| %ptr2 = getelementptr float, ptr %ptr1, i64 100 |
| %f2 = load float, ptr %ptr2 |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check that comparisons of spilled values can use CEB rather than CEBR. |
| define float @f7(ptr %ptr0) #0 { |
| ; CHECK-LABEL: f7: |
| ; CHECK: brasl %r14, foo@PLT |
| ; CHECK-SCALAR: ceb {{%f[0-9]+}}, 16{{[04]}}(%r15) |
| ; CHECK: br %r14 |
| %ptr1 = getelementptr float, ptr %ptr0, i64 2 |
| %ptr2 = getelementptr float, ptr %ptr0, i64 4 |
| %ptr3 = getelementptr float, ptr %ptr0, i64 6 |
| %ptr4 = getelementptr float, ptr %ptr0, i64 8 |
| %ptr5 = getelementptr float, ptr %ptr0, i64 10 |
| %ptr6 = getelementptr float, ptr %ptr0, i64 12 |
| %ptr7 = getelementptr float, ptr %ptr0, i64 14 |
| %ptr8 = getelementptr float, ptr %ptr0, i64 16 |
| %ptr9 = getelementptr float, ptr %ptr0, i64 18 |
| %ptr10 = getelementptr float, ptr %ptr0, i64 20 |
| |
| %val0 = load float, ptr %ptr0 |
| %val1 = load float, ptr %ptr1 |
| %val2 = load float, ptr %ptr2 |
| %val3 = load float, ptr %ptr3 |
| %val4 = load float, ptr %ptr4 |
| %val5 = load float, ptr %ptr5 |
| %val6 = load float, ptr %ptr6 |
| %val7 = load float, ptr %ptr7 |
| %val8 = load float, ptr %ptr8 |
| %val9 = load float, ptr %ptr9 |
| %val10 = load float, ptr %ptr10 |
| |
| %ret = call float @foo() #0 |
| |
| %cmp0 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val0, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp1 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val1, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp2 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val2, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp3 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val3, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp4 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val4, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp5 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val5, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp6 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val6, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp7 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val7, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp8 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val8, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp9 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val9, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %cmp10 = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %ret, float %val10, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| |
| %sel0 = select i1 %cmp0, float %ret, float 0.0 |
| %sel1 = select i1 %cmp1, float %sel0, float 1.0 |
| %sel2 = select i1 %cmp2, float %sel1, float 2.0 |
| %sel3 = select i1 %cmp3, float %sel2, float 3.0 |
| %sel4 = select i1 %cmp4, float %sel3, float 4.0 |
| %sel5 = select i1 %cmp5, float %sel4, float 5.0 |
| %sel6 = select i1 %cmp6, float %sel5, float 6.0 |
| %sel7 = select i1 %cmp7, float %sel6, float 7.0 |
| %sel8 = select i1 %cmp8, float %sel7, float 8.0 |
| %sel9 = select i1 %cmp9, float %sel8, float 9.0 |
| %sel10 = select i1 %cmp10, float %sel9, float 10.0 |
| |
| ret float %sel10 |
| } |
| |
| ; Check comparison with zero. |
| define i64 @f8(i64 %a, i64 %b, float %f) #0 { |
| ; CHECK-LABEL: f8: |
| ; CHECK: ltebr %f0, %f0 |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f, float 0.0, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the comparison can be reversed if that allows CEB to be used, |
| ; first with oeq. |
| define i64 @f9(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f9: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: ber %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrne %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oeq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then one. |
| define i64 @f10(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f10: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: blhr %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrnlh %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"one", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then olt. |
| define i64 @f11(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f11: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bhr %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrnh %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"olt", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then ole. |
| define i64 @f12(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f12: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bher %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrnhe %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"ole", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then oge. |
| define i64 @f13(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f13: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bler %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrnle %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"oge", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then ogt. |
| define i64 @f14(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f14: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: blr %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrnl %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"ogt", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then ueq. |
| define i64 @f15(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f15: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bnlhr %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrlh %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"ueq", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then une. |
| define i64 @f16(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f16: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bner %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgre %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"une", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then ult. |
| define i64 @f17(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f17: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bnler %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrle %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"ult", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then ule. |
| define i64 @f18(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f18: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bnlr %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrl %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"ule", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then uge. |
| define i64 @f19(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f19: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bnhr %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrh %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"uge", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; ...then ugt. |
| define i64 @f20(i64 %a, i64 %b, float %f2, ptr %ptr) #0 { |
| ; CHECK-LABEL: f20: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-SCALAR-NEXT: bnher %r14 |
| ; CHECK-SCALAR: lgr %r2, %r3 |
| ; CHECK-VECTOR-NEXT: locgrhe %r2, %r3 |
| ; CHECK: br %r14 |
| %f1 = load float, ptr %ptr |
| %cond = call i1 @llvm.experimental.constrained.fcmp.f32( |
| float %f1, float %f2, |
| metadata !"ugt", |
| metadata !"fpexcept.strict") #0 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| attributes #0 = { strictfp } |
| |
| declare i1 @llvm.experimental.constrained.fcmp.f32(float, float, metadata, metadata) |
