77 lines
2.0 KiB
LLVM
77 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s
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; https://bugs.llvm.org/show_bug.cgi?id=41668
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define double @constant_fold_fdiv_by_zero(double* %p) {
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; CHECK-LABEL: constant_fold_fdiv_by_zero:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9218868437227405312
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; CHECK-NEXT: fmov d0, x8
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; CHECK-NEXT: ret
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%r = fdiv double 4.940660e-324, 0.0
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ret double %r
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}
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; frem by 0.0 --> NaN
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define double @constant_fold_frem_by_zero(double* %p) {
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; CHECK-LABEL: constant_fold_frem_by_zero:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9221120237041090560
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; CHECK-NEXT: fmov d0, x8
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; CHECK-NEXT: ret
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%r = frem double 4.940660e-324, 0.0
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ret double %r
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}
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; Inf * 0.0 --> NaN
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define double @constant_fold_fmul_nan(double* %p) {
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; CHECK-LABEL: constant_fold_fmul_nan:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9221120237041090560
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; CHECK-NEXT: fmov d0, x8
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; CHECK-NEXT: ret
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%r = fmul double 0x7ff0000000000000, 0.0
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ret double %r
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}
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; Inf + -Inf --> NaN
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define double @constant_fold_fadd_nan(double* %p) {
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; CHECK-LABEL: constant_fold_fadd_nan:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9221120237041090560
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; CHECK-NEXT: fmov d0, x8
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; CHECK-NEXT: ret
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%r = fadd double 0x7ff0000000000000, 0xfff0000000000000
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ret double %r
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}
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; Inf - Inf --> NaN
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define double @constant_fold_fsub_nan(double* %p) {
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; CHECK-LABEL: constant_fold_fsub_nan:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9221120237041090560
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; CHECK-NEXT: fmov d0, x8
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; CHECK-NEXT: ret
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%r = fsub double 0x7ff0000000000000, 0x7ff0000000000000
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ret double %r
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}
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; Inf * 0.0 + ? --> NaN
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define double @constant_fold_fma_nan(double* %p) {
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; CHECK-LABEL: constant_fold_fma_nan:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9221120237041090560
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; CHECK-NEXT: fmov d0, x8
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; CHECK-NEXT: ret
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%r = call double @llvm.fma.f64(double 0x7ff0000000000000, double 0.0, double 42.0)
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ret double %r
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}
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declare double @llvm.fma.f64(double, double, double)
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