llvm/test/CodeGen/SystemZ/tdc-05.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; Test the Test Data Class instruction logic operation conversion from
; compares, combined with signbit or other compares to ensure worthiness.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
;

declare float @llvm.fabs.f32(float)
declare double @llvm.fabs.f64(double)
declare fp128 @llvm.fabs.f128(fp128)

; Compare with 0, extract sign bit
define i32 @f0(half %x) {
; CHECK-LABEL: f0:
; CHECK:       # %bb.0:
; CHECK-NEXT:    stmg %r13, %r15, 104(%r15)
; CHECK-NEXT:    .cfi_offset %r13, -56
; CHECK-NEXT:    .cfi_offset %r14, -48
; CHECK-NEXT:    .cfi_offset %r15, -40
; CHECK-NEXT:    aghi %r15, -160
; CHECK-NEXT:    .cfi_def_cfa_offset 320
; CHECK-NEXT:    # kill: def $f0h killed $f0h def $f0d
; CHECK-NEXT:    lgdr %r0, %f0
; CHECK-NEXT:    srlg %r0, %r0, 48
; CHECK-NEXT:    lhr %r0, %r0
; CHECK-NEXT:    chi %r0, 0
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r13, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $f0h killed $f0h killed $f0d
; CHECK-NEXT:    brasl %r14, __extendhfsf2@PLT
; CHECK-NEXT:    ltebr %f0, %f0
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    rosbg %r13, %r0, 63, 63, 35
; CHECK-NEXT:    lr %r2, %r13
; CHECK-NEXT:    lmg %r13, %r15, 264(%r15)
; CHECK-NEXT:    br %r14
  %cast = bitcast half %x to i16
  %sign = icmp slt i16 %cast, 0
  %fcmp = fcmp ugt half %x, 0.0
  %res = or i1 %sign, %fcmp
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Compare with 0, extract sign bit
define i32 @f1(float %x) {
; CHECK-LABEL: f1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tceb %f0, 2047
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %cast = bitcast float %x to i32
  %sign = icmp slt i32 %cast, 0
  %fcmp = fcmp ugt float %x, 0.0
  %res = or i1 %sign, %fcmp
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Compare with inf, extract negated sign bit
define i32 @f2(float %x) {
; CHECK-LABEL: f2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tceb %f0, 2698
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %cast = bitcast float %x to i32
  %sign = icmp sgt i32 %cast, -1
  %fcmp = fcmp ult float %x, 0x7ff0000000000000
  %res = and i1 %sign, %fcmp
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Compare with minnorm, extract negated sign bit
define i32 @f3(float %x) {
; CHECK-LABEL: f3:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tceb %f0, 2176
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %cast = bitcast float %x to i32
  %sign = icmp sgt i32 %cast, -1
  %fcmp = fcmp olt float %x, 0x3810000000000000
  %res = and i1 %sign, %fcmp
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Test float isnormal, from clang.
define i32 @f4(float %x) {
; CHECK-LABEL: f4:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tceb %f0, 768
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %y = call float @llvm.fabs.f32(float %x)
  %ord = fcmp ord float %x, 0.0
  %a = fcmp ult float %y, 0x7ff0000000000000
  %b = fcmp uge float %y, 0x3810000000000000
  %c = and i1 %a, %b
  %res = and i1 %ord, %c
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Check for negative 0.
define i32 @f5(float %x) {
; CHECK-LABEL: f5:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tceb %f0, 1024
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %cast = bitcast float %x to i32
  %sign = icmp slt i32 %cast, 0
  %fcmp = fcmp oeq float %x, 0.0
  %res = and i1 %sign, %fcmp
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Test isnormal, from clang.
define i32 @f6(double %x) {
; CHECK-LABEL: f6:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tcdb %f0, 768
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %y = call double @llvm.fabs.f64(double %x)
  %ord = fcmp ord double %x, 0.0
  %a = fcmp ult double %y, 0x7ff0000000000000
  %b = fcmp uge double %y, 0x0010000000000000
  %c = and i1 %ord, %a
  %res = and i1 %b, %c
  %xres = zext i1 %res to i32
  ret i32 %xres
}

; Test isinf || isnan, from clang.
define i32 @f7(double %x) {
; CHECK-LABEL: f7:
; CHECK:       # %bb.0:
; CHECK-NEXT:    tcdb %f0, 63
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    risbg %r2, %r0, 63, 191, 36
; CHECK-NEXT:    # kill: def $r2l killed $r2l killed $r2d
; CHECK-NEXT:    br %r14
  %y = call double @llvm.fabs.f64(double %x)
  %a = fcmp oeq double %y, 0x7ff0000000000000
  %b = fcmp uno double %x, 0.0
  %res = or i1 %a, %b
  %xres = zext i1 %res to i32
  ret i32 %xres
}