Auto merge of rust-lang#121914 - Nadrieril:rollup-ol98ncg, r=Nadrieril

Rollup of 5 pull requests

Successful merges:

 - rust-lang#120761 (Add initial support for DataFlowSanitizer)
 - rust-lang#121622 (Preserve same vtable pointer when cloning raw waker, to fix Waker::will_wake)
 - rust-lang#121716 (match lowering: Lower bindings in a predictable order)
 - rust-lang#121731 (Now that inlining, mir validation and const eval all use reveal-all, we won't be constraining hidden types here anymore)
 - rust-lang#121841 (`f16` and `f128` step 2: intrinsics)

r? `@ghost`
`@rustbot` modify labels: rollup

compiler/rustc_ast/src/ast.rs

@@ -1920,22 +1920,28 @@ pub struct FnSig {
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
 #[derive(Encodable, Decodable, HashStable_Generic)]
 pub enum FloatTy {
+    F16,
     F32,
     F64,
+    F128,
 }
 
 impl FloatTy {
     pub fn name_str(self) -> &'static str {
         match self {
+            FloatTy::F16 => "f16",
             FloatTy::F32 => "f32",
             FloatTy::F64 => "f64",
+            FloatTy::F128 => "f128",
         }
     }
 
     pub fn name(self) -> Symbol {
         match self {
+            FloatTy::F16 => sym::f16,
             FloatTy::F32 => sym::f32,
             FloatTy::F64 => sym::f64,
+            FloatTy::F128 => sym::f128,
         }
     }
 }

compiler/rustc_codegen_llvm/src/back/write.rs

@@ -519,12 +519,22 @@ pub(crate) unsafe fn llvm_optimize(
     let pgo_sample_use_path = get_pgo_sample_use_path(config);
     let is_lto = opt_stage == llvm::OptStage::ThinLTO || opt_stage == llvm::OptStage::FatLTO;
     let instr_profile_output_path = get_instr_profile_output_path(config);
+    let sanitize_dataflow_abilist: Vec<_> = config
+        .sanitizer_dataflow_abilist
+        .iter()
+        .map(|file| CString::new(file.as_str()).unwrap())
+        .collect();
+    let sanitize_dataflow_abilist_ptrs: Vec<_> =
+        sanitize_dataflow_abilist.iter().map(|file| file.as_ptr()).collect();
     // Sanitizer instrumentation is only inserted during the pre-link optimization stage.
     let sanitizer_options = if !is_lto {
         Some(llvm::SanitizerOptions {
             sanitize_address: config.sanitizer.contains(SanitizerSet::ADDRESS),
             sanitize_address_recover: config.sanitizer_recover.contains(SanitizerSet::ADDRESS),
             sanitize_cfi: config.sanitizer.contains(SanitizerSet::CFI),
+            sanitize_dataflow: config.sanitizer.contains(SanitizerSet::DATAFLOW),
+            sanitize_dataflow_abilist: sanitize_dataflow_abilist_ptrs.as_ptr(),
+            sanitize_dataflow_abilist_len: sanitize_dataflow_abilist_ptrs.len(),
             sanitize_kcfi: config.sanitizer.contains(SanitizerSet::KCFI),
             sanitize_memory: config.sanitizer.contains(SanitizerSet::MEMORY),
             sanitize_memory_recover: config.sanitizer_recover.contains(SanitizerSet::MEMORY),

compiler/rustc_codegen_llvm/src/context.rs

@@ -685,8 +685,10 @@ impl<'ll> CodegenCx<'ll, '_> {
         let t_i64 = self.type_i64();
         let t_i128 = self.type_i128();
         let t_isize = self.type_isize();
+        let t_f16 = self.type_f16();
         let t_f32 = self.type_f32();
         let t_f64 = self.type_f64();
+        let t_f128 = self.type_f128();
         let t_metadata = self.type_metadata();
         let t_token = self.type_token();
 
@@ -728,69 +730,115 @@ impl<'ll> CodegenCx<'ll, '_> {
         ifn!("llvm.debugtrap", fn() -> void);
         ifn!("llvm.frameaddress", fn(t_i32) -> ptr);
 
+        ifn!("llvm.powi.f16", fn(t_f16, t_i32) -> t_f16);
         ifn!("llvm.powi.f32", fn(t_f32, t_i32) -> t_f32);
         ifn!("llvm.powi.f64", fn(t_f64, t_i32) -> t_f64);
+        ifn!("llvm.powi.f128", fn(t_f128, t_i32) -> t_f128);
 
+        ifn!("llvm.pow.f16", fn(t_f16, t_f16) -> t_f16);
         ifn!("llvm.pow.f32", fn(t_f32, t_f32) -> t_f32);
         ifn!("llvm.pow.f64", fn(t_f64, t_f64) -> t_f64);
+        ifn!("llvm.pow.f128", fn(t_f128, t_f128) -> t_f128);
 
+        ifn!("llvm.sqrt.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.sqrt.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.sqrt.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.sqrt.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.sin.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.sin.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.sin.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.sin.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.cos.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.cos.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.cos.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.cos.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.exp.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.exp.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.exp.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.exp.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.exp2.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.exp2.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.exp2.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.exp2.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.log.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.log.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.log.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.log.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.log10.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.log10.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.log10.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.log10.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.log2.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.log2.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.log2.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.log2.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.fma.f16", fn(t_f16, t_f16, t_f16) -> t_f16);
         ifn!("llvm.fma.f32", fn(t_f32, t_f32, t_f32) -> t_f32);
         ifn!("llvm.fma.f64", fn(t_f64, t_f64, t_f64) -> t_f64);
+        ifn!("llvm.fma.f128", fn(t_f128, t_f128, t_f128) -> t_f128);
 
+        ifn!("llvm.fabs.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.fabs.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.fabs.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.fabs.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.minnum.f16", fn(t_f16, t_f16) -> t_f16);
         ifn!("llvm.minnum.f32", fn(t_f32, t_f32) -> t_f32);
         ifn!("llvm.minnum.f64", fn(t_f64, t_f64) -> t_f64);
+        ifn!("llvm.minnum.f128", fn(t_f128, t_f128) -> t_f128);
+
+        ifn!("llvm.maxnum.f16", fn(t_f16, t_f16) -> t_f16);
         ifn!("llvm.maxnum.f32", fn(t_f32, t_f32) -> t_f32);
         ifn!("llvm.maxnum.f64", fn(t_f64, t_f64) -> t_f64);
+        ifn!("llvm.maxnum.f128", fn(t_f128, t_f128) -> t_f128);
 
+        ifn!("llvm.floor.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.floor.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.floor.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.floor.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.ceil.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.ceil.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.ceil.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.ceil.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.trunc.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.trunc.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.copysign.f16", fn(t_f16, t_f16) -> t_f16);
         ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
         ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
+        ifn!("llvm.copysign.f128", fn(t_f128, t_f128) -> t_f128);
 
+        ifn!("llvm.round.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.round.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.roundeven.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.roundeven.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.roundeven.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.roundeven.f128", fn(t_f128) -> t_f128);
 
+        ifn!("llvm.rint.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.rint.f128", fn(t_f128) -> t_f128);
+
+        ifn!("llvm.nearbyint.f16", fn(t_f16) -> t_f16);
         ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
         ifn!("llvm.nearbyint.f64", fn(t_f64) -> t_f64);
+        ifn!("llvm.nearbyint.f128", fn(t_f128) -> t_f128);
 
         ifn!("llvm.ctpop.i8", fn(t_i8) -> t_i8);
         ifn!("llvm.ctpop.i16", fn(t_i16) -> t_i16);

compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs

@@ -695,7 +695,7 @@ impl MsvcBasicName for ty::UintTy {
 
 impl MsvcBasicName for ty::FloatTy {
     fn msvc_basic_name(self) -> &'static str {
-        // FIXME: f16 and f128 have no MSVE representation. We could improve the debuginfo.
+        // FIXME: f16 and f128 have no MSVC representation. We could improve the debuginfo.
         // See: <https://github.com/rust-lang/rust/pull/114607/files#r1454683264>
         match self {
             ty::FloatTy::F16 => "half",

compiler/rustc_codegen_llvm/src/intrinsic.rs

@@ -28,51 +28,118 @@ fn get_simple_intrinsic<'ll>(
     name: Symbol,
 ) -> Option<(&'ll Type, &'ll Value)> {
     let llvm_name = match name {
+        sym::sqrtf16 => "llvm.sqrt.f16",
         sym::sqrtf32 => "llvm.sqrt.f32",
         sym::sqrtf64 => "llvm.sqrt.f64",
+        sym::sqrtf128 => "llvm.sqrt.f128",
+
+        sym::powif16 => "llvm.powi.f16",
         sym::powif32 => "llvm.powi.f32",
         sym::powif64 => "llvm.powi.f64",
+        sym::powif128 => "llvm.powi.f128",
+
+        sym::sinf16 => "llvm.sin.f16",
         sym::sinf32 => "llvm.sin.f32",
         sym::sinf64 => "llvm.sin.f64",
+        sym::sinf128 => "llvm.sin.f128",
+
+        sym::cosf16 => "llvm.cos.f16",
         sym::cosf32 => "llvm.cos.f32",
         sym::cosf64 => "llvm.cos.f64",
+        sym::cosf128 => "llvm.cos.f128",
+
+        sym::powf16 => "llvm.pow.f16",
         sym::powf32 => "llvm.pow.f32",
         sym::powf64 => "llvm.pow.f64",
+        sym::powf128 => "llvm.pow.f128",
+
+        sym::expf16 => "llvm.exp.f16",
         sym::expf32 => "llvm.exp.f32",
         sym::expf64 => "llvm.exp.f64",
+        sym::expf128 => "llvm.exp.f128",
+
+        sym::exp2f16 => "llvm.exp2.f16",
         sym::exp2f32 => "llvm.exp2.f32",
         sym::exp2f64 => "llvm.exp2.f64",
+        sym::exp2f128 => "llvm.exp2.f128",
+
+        sym::logf16 => "llvm.log.f16",
         sym::logf32 => "llvm.log.f32",
         sym::logf64 => "llvm.log.f64",
+        sym::logf128 => "llvm.log.f128",
+
+        sym::log10f16 => "llvm.log10.f16",
         sym::log10f32 => "llvm.log10.f32",
         sym::log10f64 => "llvm.log10.f64",
+        sym::log10f128 => "llvm.log10.f128",
+
+        sym::log2f16 => "llvm.log2.f16",
         sym::log2f32 => "llvm.log2.f32",
         sym::log2f64 => "llvm.log2.f64",
+        sym::log2f128 => "llvm.log2.f128",
+
+        sym::fmaf16 => "llvm.fma.f16",
         sym::fmaf32 => "llvm.fma.f32",
         sym::fmaf64 => "llvm.fma.f64",
+        sym::fmaf128 => "llvm.fma.f128",
+
+        sym::fabsf16 => "llvm.fabs.f16",
         sym::fabsf32 => "llvm.fabs.f32",
         sym::fabsf64 => "llvm.fabs.f64",
+        sym::fabsf128 => "llvm.fabs.f128",
+
+        sym::minnumf16 => "llvm.minnum.f16",
         sym::minnumf32 => "llvm.minnum.f32",
         sym::minnumf64 => "llvm.minnum.f64",
+        sym::minnumf128 => "llvm.minnum.f128",
+
+        sym::maxnumf16 => "llvm.maxnum.f16",
         sym::maxnumf32 => "llvm.maxnum.f32",
         sym::maxnumf64 => "llvm.maxnum.f64",
+        sym::maxnumf128 => "llvm.maxnum.f128",
+
+        sym::copysignf16 => "llvm.copysign.f16",
         sym::copysignf32 => "llvm.copysign.f32",
         sym::copysignf64 => "llvm.copysign.f64",
+        sym::copysignf128 => "llvm.copysign.f128",
+
+        sym::floorf16 => "llvm.floor.f16",
         sym::floorf32 => "llvm.floor.f32",
         sym::floorf64 => "llvm.floor.f64",
+        sym::floorf128 => "llvm.floor.f128",
+
+        sym::ceilf16 => "llvm.ceil.f16",
         sym::ceilf32 => "llvm.ceil.f32",
         sym::ceilf64 => "llvm.ceil.f64",
+        sym::ceilf128 => "llvm.ceil.f128",
+
+        sym::truncf16 => "llvm.trunc.f16",
         sym::truncf32 => "llvm.trunc.f32",
         sym::truncf64 => "llvm.trunc.f64",
+        sym::truncf128 => "llvm.trunc.f128",
+
+        sym::rintf16 => "llvm.rint.f16",
         sym::rintf32 => "llvm.rint.f32",
         sym::rintf64 => "llvm.rint.f64",
+        sym::rintf128 => "llvm.rint.f128",
+
+        sym::nearbyintf16 => "llvm.nearbyint.f16",
         sym::nearbyintf32 => "llvm.nearbyint.f32",
         sym::nearbyintf64 => "llvm.nearbyint.f64",
+        sym::nearbyintf128 => "llvm.nearbyint.f128",
+
+        sym::roundf16 => "llvm.round.f16",
         sym::roundf32 => "llvm.round.f32",
         sym::roundf64 => "llvm.round.f64",
+        sym::roundf128 => "llvm.round.f128",
+
         sym::ptr_mask => "llvm.ptrmask",
+
+        sym::roundevenf16 => "llvm.roundeven.f16",
         sym::roundevenf32 => "llvm.roundeven.f32",
         sym::roundevenf64 => "llvm.roundeven.f64",
+        sym::roundevenf128 => "llvm.roundeven.f128",
+
         _ => return None,
     };
     Some(cx.get_intrinsic(llvm_name))

compiler/rustc_codegen_llvm/src/llvm/ffi.rs

@@ -480,6 +480,9 @@ pub struct SanitizerOptions {
     pub sanitize_address: bool,
     pub sanitize_address_recover: bool,
     pub sanitize_cfi: bool,
+    pub sanitize_dataflow: bool,
+    pub sanitize_dataflow_abilist: *const *const c_char,
+    pub sanitize_dataflow_abilist_len: size_t,
     pub sanitize_kcfi: bool,
     pub sanitize_memory: bool,
     pub sanitize_memory_recover: bool,

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -1221,6 +1221,9 @@ fn add_sanitizer_libraries(
     if sanitizer.contains(SanitizerSet::ADDRESS) {
         link_sanitizer_runtime(sess, flavor, linker, "asan");
     }
+    if sanitizer.contains(SanitizerSet::DATAFLOW) {
+        link_sanitizer_runtime(sess, flavor, linker, "dfsan");
+    }
     if sanitizer.contains(SanitizerSet::LEAK) {
         link_sanitizer_runtime(sess, flavor, linker, "lsan");
     }

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -95,6 +95,7 @@ pub struct ModuleConfig {
 
     pub sanitizer: SanitizerSet,
     pub sanitizer_recover: SanitizerSet,
+    pub sanitizer_dataflow_abilist: Vec<String>,
     pub sanitizer_memory_track_origins: usize,
 
     // Flags indicating which outputs to produce.
@@ -197,6 +198,10 @@ impl ModuleConfig {
             ),
 
             sanitizer: if_regular!(sess.opts.unstable_opts.sanitizer, SanitizerSet::empty()),
+            sanitizer_dataflow_abilist: if_regular!(
+                sess.opts.unstable_opts.sanitizer_dataflow_abilist.clone(),
+                Vec::new()
+            ),
             sanitizer_recover: if_regular!(
                 sess.opts.unstable_opts.sanitizer_recover,
                 SanitizerSet::empty()

compiler/rustc_const_eval/src/util/compare_types.rs

@@ -4,7 +4,7 @@
 //! other areas of the compiler as well.
 
 use rustc_infer::infer::TyCtxtInferExt;
-use rustc_middle::traits::{DefiningAnchor, ObligationCause};
+use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::{ParamEnv, Ty, TyCtxt, Variance};
 use rustc_trait_selection::traits::ObligationCtxt;
 
@@ -33,9 +33,6 @@ pub fn is_equal_up_to_subtyping<'tcx>(
 /// When validating assignments, the variance should be `Covariant`. When checking
 /// during `MirPhase` >= `MirPhase::Runtime(RuntimePhase::Initial)` variance should be `Invariant`
 /// because we want to check for type equality.
-///
-/// This mostly ignores opaque types as it can be used in constraining contexts
-/// while still computing the final underlying type.
 pub fn relate_types<'tcx>(
     tcx: TyCtxt<'tcx>,
     param_env: ParamEnv<'tcx>,
@@ -47,8 +44,7 @@ pub fn relate_types<'tcx>(
         return true;
     }
 
-    let mut builder =
-        tcx.infer_ctxt().ignoring_regions().with_opaque_type_inference(DefiningAnchor::Bubble);
+    let mut builder = tcx.infer_ctxt().ignoring_regions();
     let infcx = builder.build();
     let ocx = ObligationCtxt::new(&infcx);
     let cause = ObligationCause::dummy();
@@ -58,20 +54,5 @@ pub fn relate_types<'tcx>(
         Ok(()) => {}
         Err(_) => return false,
     };
-    let errors = ocx.select_all_or_error();
-    // With `Reveal::All`, opaque types get normalized away, with `Reveal::UserFacing`
-    // we would get unification errors because we're unable to look into opaque types,
-    // even if they're constrained in our current function.
-    for (key, ty) in infcx.take_opaque_types() {
-        let hidden_ty = tcx.type_of(key.def_id).instantiate(tcx, key.args);
-        if hidden_ty != ty.hidden_type.ty {
-            span_bug!(
-                ty.hidden_type.span,
-                "{}, {}",
-                tcx.type_of(key.def_id).instantiate(tcx, key.args),
-                ty.hidden_type.ty
-            );
-        }
-    }
-    errors.is_empty()
+    ocx.select_all_or_error().is_empty()
 }