; Test 32-bit floating-point signaling 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: kebr %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.fcmps.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 KEB range.
define i64 @f2(i64 %a, i64 %b, float %f1, float *%ptr) #0 {
; CHECK-LABEL: f2:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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 KEB range.
define i64 @f3(i64 %a, i64 %b, float %f1, float *%base) #0 {
; CHECK-LABEL: f3:
; CHECK: keb %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, float *%base, i64 1023
%f2 = load float, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%base) #0 {
; CHECK-LABEL: f4:
; CHECK: aghi %r4, 4096
; CHECK: keb %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, float *%base, i64 1024
%f2 = load float, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%base) #0 {
; CHECK-LABEL: f5:
; CHECK: aghi %r4, -4
; CHECK: keb %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, float *%base, i64 -1
%f2 = load float, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.f32(
float %f1, float %f2,
metadata !"oeq",
metadata !"fpexcept.strict") #0
%res = select i1 %cond, i64 %a, i64 %b
ret i64 %res
}
; Check that KEB allows indices.
define i64 @f6(i64 %a, i64 %b, float %f1, float *%base, i64 %index) #0 {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r5, 2
; CHECK: keb %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, float *%base, i64 %index
%ptr2 = getelementptr float, float *%ptr1, i64 100
%f2 = load float, float *%ptr2
%cond = call i1 @llvm.experimental.constrained.fcmps.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 KEB rather than KEBR.
define float @f7(float *%ptr0) #0 {
; CHECK-LABEL: f7:
; CHECK: brasl %r14, foo@PLT
; CHECK-SCALAR: keb {{%f[0-9]+}}, 16{{[04]}}(%r15)
; CHECK: br %r14
%ptr1 = getelementptr float, float *%ptr0, i64 2
%ptr2 = getelementptr float, float *%ptr0, i64 4
%ptr3 = getelementptr float, float *%ptr0, i64 6
%ptr4 = getelementptr float, float *%ptr0, i64 8
%ptr5 = getelementptr float, float *%ptr0, i64 10
%ptr6 = getelementptr float, float *%ptr0, i64 12
%ptr7 = getelementptr float, float *%ptr0, i64 14
%ptr8 = getelementptr float, float *%ptr0, i64 16
%ptr9 = getelementptr float, float *%ptr0, i64 18
%ptr10 = getelementptr float, float *%ptr0, i64 20
%val0 = load float, float *%ptr0
%val1 = load float, float *%ptr1
%val2 = load float, float *%ptr2
%val3 = load float, float *%ptr3
%val4 = load float, float *%ptr4
%val5 = load float, float *%ptr5
%val6 = load float, float *%ptr6
%val7 = load float, float *%ptr7
%val8 = load float, float *%ptr8
%val9 = load float, float *%ptr9
%val10 = load float, float *%ptr10
%ret = call float @foo() #0
%cmp0 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val0,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp1 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val1,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp2 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val2,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp3 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val3,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp4 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val4,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp5 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val5,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp6 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val6,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp7 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val7,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp8 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val8,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp9 = call i1 @llvm.experimental.constrained.fcmps.f32(
float %ret, float %val9,
metadata !"olt",
metadata !"fpexcept.strict") #0
%cmp10 = call i1 @llvm.experimental.constrained.fcmps.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 - cannot use LOAD AND TEST.
define i64 @f8(i64 %a, i64 %b, float %f) #0 {
; CHECK-LABEL: f8:
; CHECK: lzer [[REG:%f[0-9]+]]
; CHECK-NEXT: kebr %f0, [[REG]]
; 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.fcmps.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 KEB to be used,
; first with oeq.
define i64 @f9(i64 %a, i64 %b, float %f2, float *%ptr) #0 {
; CHECK-LABEL: f9:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f10:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f11:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f12:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f13:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f14:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f15:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f16:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f17:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f18:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f19:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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, float *%ptr) #0 {
; CHECK-LABEL: f20:
; CHECK: keb %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, float *%ptr
%cond = call i1 @llvm.experimental.constrained.fcmps.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.fcmps.f32(float, float, metadata, metadata)