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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s
; https://bugs.llvm.org/show_bug.cgi?id=41668
define double @constant_fold_fdiv_by_zero(double* %p) {
; CHECK-LABEL: constant_fold_fdiv_by_zero:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9218868437227405312
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
%r = fdiv double 4.940660e-324, 0.0
ret double %r
}
; frem by 0.0 --> NaN
define double @constant_fold_frem_by_zero(double* %p) {
; CHECK-LABEL: constant_fold_frem_by_zero:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9221120237041090560
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
%r = frem double 4.940660e-324, 0.0
ret double %r
}
; Inf * 0.0 --> NaN
define double @constant_fold_fmul_nan(double* %p) {
; CHECK-LABEL: constant_fold_fmul_nan:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9221120237041090560
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
%r = fmul double 0x7ff0000000000000, 0.0
ret double %r
}
; Inf + -Inf --> NaN
define double @constant_fold_fadd_nan(double* %p) {
; CHECK-LABEL: constant_fold_fadd_nan:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9221120237041090560
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
%r = fadd double 0x7ff0000000000000, 0xfff0000000000000
ret double %r
}
; Inf - Inf --> NaN
define double @constant_fold_fsub_nan(double* %p) {
; CHECK-LABEL: constant_fold_fsub_nan:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9221120237041090560
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
%r = fsub double 0x7ff0000000000000, 0x7ff0000000000000
ret double %r
}
; Inf * 0.0 + ? --> NaN
define double @constant_fold_fma_nan(double* %p) {
; CHECK-LABEL: constant_fold_fma_nan:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9221120237041090560
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
%r = call double @llvm.fma.f64(double 0x7ff0000000000000, double 0.0, double 42.0)
ret double %r
}
define double @fdiv_nnan_nan_op0(double %x) {
; CHECK-LABEL: fdiv_nnan_nan_op0:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fdiv nnan double 0xfff8000000000000, %x
ret double %r
}
define double @fmul_nnan_nan_op1(double %x) {
; CHECK-LABEL: fmul_nnan_nan_op1:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fmul nnan double %x, 0x7ff8000000000000
ret double %r
}
; Negative test - nan is ok.
; TODO: Should simplify to nan.
define double @fdiv_ninf_nan_op0(double %x) {
; CHECK-LABEL: fdiv_ninf_nan_op0:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #-2251799813685248
; CHECK-NEXT: fmov d1, x8
; CHECK-NEXT: fdiv d0, d1, d0
; CHECK-NEXT: ret
%r = fdiv ninf double 0xfff8000000000000, %x
ret double %r
}
; Negative test - nan is ok.
; TODO: Should simplify to nan.
define double @fadd_ninf_nan_op1(double %x) {
; CHECK-LABEL: fadd_ninf_nan_op1:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9221120237041090560
; CHECK-NEXT: fmov d1, x8
; CHECK-NEXT: fadd d0, d0, d1
; CHECK-NEXT: ret
%r = fadd ninf double %x, 0x7ff8000000000000
ret double %r
}
define double @fdiv_ninf_inf_op0(double %x) {
; CHECK-LABEL: fdiv_ninf_inf_op0:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fdiv ninf double 0x7ff0000000000000, %x
ret double %r
}
define double @fadd_ninf_inf_op1(double %x) {
; CHECK-LABEL: fadd_ninf_inf_op1:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fadd ninf double %x, 0xfff0000000000000
ret double %r
}
; Negative test - inf is ok.
; TODO: Should simplify to inf.
define double @fsub_nnan_inf_op0(double %x) {
; CHECK-LABEL: fsub_nnan_inf_op0:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #9218868437227405312
; CHECK-NEXT: fmov d1, x8
; CHECK-NEXT: fsub d0, d1, d0
; CHECK-NEXT: ret
%r = fsub nnan double 0x7ff0000000000000, %x
ret double %r
}
; Negative test - inf is ok.
; TODO: Should simplify to -inf.
define double @fmul_nnan_inf_op1(double %x) {
; CHECK-LABEL: fmul_nnan_inf_op1:
; CHECK: // %bb.0:
; CHECK-NEXT: mov x8, #-4503599627370496
; CHECK-NEXT: fmov d1, x8
; CHECK-NEXT: fmul d0, d0, d1
; CHECK-NEXT: ret
%r = fmul nnan double %x, 0xfff0000000000000
ret double %r
}
define double @fdiv_nnan_undef_op0(double %x) {
; CHECK-LABEL: fdiv_nnan_undef_op0:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fdiv nnan double undef, %x
ret double %r
}
define double @fdiv_nnan_undef_op1(double %x) {
; CHECK-LABEL: fdiv_nnan_undef_op1:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fdiv nnan double %x, undef
ret double %r
}
define double @fdiv_ninf_undef_op0(double %x) {
; CHECK-LABEL: fdiv_ninf_undef_op0:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fdiv ninf double undef, %x
ret double %r
}
define double @fdiv_ninf_undef_op1(double %x) {
; CHECK-LABEL: fdiv_ninf_undef_op1:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%r = fdiv ninf double %x, undef
ret double %r
}
declare double @llvm.fma.f64(double, double, double)
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