diff options
Diffstat (limited to 'compiler/rustc_pattern_analysis/src/rustc.rs')
| -rw-r--r-- | compiler/rustc_pattern_analysis/src/rustc.rs | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/compiler/rustc_pattern_analysis/src/rustc.rs b/compiler/rustc_pattern_analysis/src/rustc.rs index 8391c694c64..d4dd4dd858c 100644 --- a/compiler/rustc_pattern_analysis/src/rustc.rs +++ b/compiler/rustc_pattern_analysis/src/rustc.rs @@ -247,8 +247,9 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { } _ => bug!("bad slice pattern {:?} {:?}", ctor, ty), }, - Bool(..) | IntRange(..) | F32Range(..) | F64Range(..) | Str(..) | Opaque(..) - | Never | NonExhaustive | Hidden | Missing | PrivateUninhabited | Wildcard => &[], + Bool(..) | IntRange(..) | F16Range(..) | F32Range(..) | F64Range(..) + | F128Range(..) | Str(..) | Opaque(..) | Never | NonExhaustive | Hidden | Missing + | PrivateUninhabited | Wildcard => &[], Or => { bug!("called `Fields::wildcards` on an `Or` ctor") } @@ -275,8 +276,9 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { }, Ref => 1, Slice(slice) => slice.arity(), - Bool(..) | IntRange(..) | F32Range(..) | F64Range(..) | Str(..) | Opaque(..) - | Never | NonExhaustive | Hidden | Missing | PrivateUninhabited | Wildcard => 0, + Bool(..) | IntRange(..) | F16Range(..) | F32Range(..) | F64Range(..) + | F128Range(..) | Str(..) | Opaque(..) | Never | NonExhaustive | Hidden | Missing + | PrivateUninhabited | Wildcard => 0, Or => bug!("The `Or` constructor doesn't have a fixed arity"), } } @@ -546,6 +548,18 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { fields = vec![]; arity = 0; } + ty::Float(ty::FloatTy::F16) => { + ctor = match value.try_eval_bits(cx.tcx, cx.param_env) { + Some(bits) => { + use rustc_apfloat::Float; + let value = rustc_apfloat::ieee::Half::from_bits(bits); + F16Range(value, value, RangeEnd::Included) + } + None => Opaque(OpaqueId::new()), + }; + fields = vec![]; + arity = 0; + } ty::Float(ty::FloatTy::F32) => { ctor = match value.try_eval_bits(cx.tcx, cx.param_env) { Some(bits) => { @@ -570,6 +584,18 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { fields = vec![]; arity = 0; } + ty::Float(ty::FloatTy::F128) => { + ctor = match value.try_eval_bits(cx.tcx, cx.param_env) { + Some(bits) => { + use rustc_apfloat::Float; + let value = rustc_apfloat::ieee::Quad::from_bits(bits); + F128Range(value, value, RangeEnd::Included) + } + None => Opaque(OpaqueId::new()), + }; + fields = vec![]; + arity = 0; + } ty::Ref(_, t, _) if t.is_str() => { // We want a `&str` constant to behave like a `Deref` pattern, to be compatible // with other `Deref` patterns. This could have been done in `const_to_pat`, @@ -611,7 +637,12 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { let lo = lo.as_finite().map(|c| c.eval_bits(cx.tcx, cx.param_env)); let hi = hi.as_finite().map(|c| c.eval_bits(cx.tcx, cx.param_env)); match fty { - ty::FloatTy::F16 => unimplemented!("f16_f128"), + ty::FloatTy::F16 => { + use rustc_apfloat::ieee::Half; + let lo = lo.map(Half::from_bits).unwrap_or(-Half::INFINITY); + let hi = hi.map(Half::from_bits).unwrap_or(Half::INFINITY); + F16Range(lo, hi, end) + } ty::FloatTy::F32 => { use rustc_apfloat::ieee::Single; let lo = lo.map(Single::from_bits).unwrap_or(-Single::INFINITY); @@ -624,7 +655,12 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { let hi = hi.map(Double::from_bits).unwrap_or(Double::INFINITY); F64Range(lo, hi, end) } - ty::FloatTy::F128 => unimplemented!("f16_f128"), + ty::FloatTy::F128 => { + use rustc_apfloat::ieee::Quad; + let lo = lo.map(Quad::from_bits).unwrap_or(-Quad::INFINITY); + let hi = hi.map(Quad::from_bits).unwrap_or(Quad::INFINITY); + F128Range(lo, hi, end) + } } } _ => bug!("invalid type for range pattern: {}", ty.inner()), @@ -837,7 +873,7 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> { "trying to convert a `Missing` constructor into a `Pat`; this is probably a bug, `Missing` should have been processed in `apply_constructors`" ), - F32Range(..) | F64Range(..) | Opaque(..) | Or => { + F16Range(..) | F32Range(..) | F64Range(..) | F128Range(..) | Opaque(..) | Or => { bug!("can't convert to pattern: {:?}", pat) } }; |