| ; 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) |