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; Test the Test Data Class instruction, as used by fpclassify.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
;
declare double @llvm.fabs.f64(double)
define i32 @fpc(double %x) {
entry:
; CHECK-LABEL: fpc
; CHECK-DAG: lhi %r2, 5
; CHECK-DAG: ltdbr %f1, %f0
; CHECK: je [[RET:.L.*]]
%testeq = fcmp oeq double %x, 0.000000e+00
br i1 %testeq, label %ret, label %nonzero, !prof !1
nonzero:
; CHECK-DAG: lhi %r2, 1
; CHECK-DAG: cdbr %f0, %f0
; CHECK: jo [[RET]]
%testnan = fcmp uno double %x, 0.000000e+00
br i1 %testnan, label %ret, label %nonzeroord, !prof !1
nonzeroord:
; CHECK-DAG: lhi %r2, 2
; CHECK-DAG: tcdb %f0, 48
; CHECK: jl [[RET]]
%abs = tail call double @llvm.fabs.f64(double %x)
%testinf = fcmp oeq double %abs, 0x7FF0000000000000
br i1 %testinf, label %ret, label %finite, !prof !1
finite:
; CHECK-DAG: lhi %r2, 3
; CHECK-DAG: tcdb %f0, 831
; CHECK: blr %r14
; CHECK: lhi %r2, 4
%testnormal = fcmp uge double %abs, 0x10000000000000
%finres = select i1 %testnormal, i32 3, i32 4
br label %ret
ret:
; CHECK: [[RET]]:
; CHECK: br %r14
%res = phi i32 [ 5, %entry ], [ 1, %nonzero ], [ 2, %nonzeroord ], [ %finres, %finite ]
ret i32 %res
}
!1 = !{!"branch_weights", i32 1, i32 1}
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