Auto merge of #41427 - alexcrichton:beta-next, r=alexcrichton

[beta] Final backports to beta

Backport of:

* #40863
* #41085
* #41354
* #41378

src/bootstrap/lib.rs

@@ -181,7 +181,7 @@ struct Crate {
 ///
 /// These entries currently correspond to the various output directories of the
 /// build system, with each mod generating output in a different directory.
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, PartialEq)]
 pub enum Mode {
     /// This cargo is going to build the standard library, placing output in the
     /// "stageN-std" directory.
@@ -461,8 +461,6 @@ impl Build {
              .env("RUSTC", self.out.join("bootstrap/debug/rustc"))
              .env("RUSTC_REAL", self.compiler_path(compiler))
              .env("RUSTC_STAGE", stage.to_string())
-             .env("RUSTC_DEBUGINFO", self.config.rust_debuginfo.to_string())
-             .env("RUSTC_DEBUGINFO_LINES", self.config.rust_debuginfo_lines.to_string())
              .env("RUSTC_CODEGEN_UNITS",
                   self.config.rust_codegen_units.to_string())
              .env("RUSTC_DEBUG_ASSERTIONS",
@@ -474,6 +472,13 @@ impl Build {
              .env("RUSTDOC_REAL", self.rustdoc(compiler))
              .env("RUSTC_FLAGS", self.rustc_flags(target).join(" "));
 
+        // Tools don't get debuginfo right now, e.g. cargo and rls don't get
+        // compiled with debuginfo.
+        if mode != Mode::Tool {
+             cargo.env("RUSTC_DEBUGINFO", self.config.rust_debuginfo.to_string())
+                  .env("RUSTC_DEBUGINFO_LINES", self.config.rust_debuginfo_lines.to_string());
+        }
+
         // Enable usage of unstable features
         cargo.env("RUSTC_BOOTSTRAP", "1");
         self.add_rust_test_threads(&mut cargo);

src/librustc_driver/driver.rs

@@ -1357,10 +1357,9 @@ pub fn build_output_filenames(input: &Input,
                                            .values()
                                            .filter(|a| a.is_none())
                                            .count();
-            let ofile = if unnamed_output_types > 1 &&
-                            sess.opts.output_types.contains_key(&OutputType::Exe) {
-                sess.warn("ignoring specified output filename for 'link' output because multiple \
-                           outputs were requested");
+            let ofile = if unnamed_output_types > 1 {
+                sess.warn("due to multiple output types requested, the explicitly specified \
+                           output file name will be adapted for each output type");
                 None
             } else {
                 Some(out_file.clone())

src/librustc_trans/cabi_x86_64.rs

@@ -375,10 +375,7 @@ pub fn compute_abi_info(ccx: &CrateContext, fty: &mut FnType) {
             let in_mem = cls.is_pass_byval() ||
                          int_regs < needed_int ||
                          sse_regs < needed_sse;
-            if in_mem {
-                // `byval` parameter thus one less integer register available
-                int_regs -= 1;
-            } else {
+            if !in_mem {
                 // split into sized chunks passed individually
                 int_regs -= needed_int;
                 sse_regs -= needed_sse;

src/librustc_typeck/check/mod.rs

@@ -3801,7 +3801,6 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                           element_ty
                       }
                       None => {
-                          self.check_expr_has_type(&idx, self.tcx.types.err);
                           let mut err = self.type_error_struct(
                               expr.span,
                               |actual| {

src/librustc_typeck/check/op.rs

@@ -184,9 +184,14 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         // particularly for things like `String + &String`.
         let rhs_ty_var = self.next_ty_var(TypeVariableOrigin::MiscVariable(rhs_expr.span));
 
-        let return_ty = match self.lookup_op_method(expr, lhs_ty, vec![rhs_ty_var],
-                                                    Symbol::intern(name), trait_def_id,
-                                                    lhs_expr) {
+        let return_ty = self.lookup_op_method(expr, lhs_ty, vec![rhs_ty_var],
+                                              Symbol::intern(name), trait_def_id,
+                                              lhs_expr);
+
+        // see `NB` above
+        let rhs_ty = self.check_expr_coercable_to_type(rhs_expr, rhs_ty_var);
+
+        let return_ty = match return_ty {
             Ok(return_ty) => return_ty,
             Err(()) => {
                 // error types are considered "builtin"
@@ -209,7 +214,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
 
                         if let TypeVariants::TyRef(_, ref ty_mut) = lhs_ty.sty {
                             if !self.infcx.type_moves_by_default(ty_mut.ty, lhs_expr.span) &&
-                                self.lookup_op_method(expr, ty_mut.ty, vec![rhs_ty_var],
+                                self.lookup_op_method(expr, ty_mut.ty, vec![rhs_ty],
                                     Symbol::intern(name), trait_def_id,
                                     lhs_expr).is_ok() {
                                 err.note(
@@ -240,7 +245,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                         if let Some(missing_trait) = missing_trait {
                             if missing_trait == "std::ops::Add" &&
                                 self.check_str_addition(expr, lhs_expr, lhs_ty,
-                                                         rhs_expr, rhs_ty_var, &mut err) {
+                                                         rhs_expr, rhs_ty, &mut err) {
                                 // This has nothing here because it means we did string
                                 // concatenation (e.g. "Hello " + "World!"). This means
                                 // we don't want the note in the else clause to be emitted
@@ -257,9 +262,6 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
             }
         };
 
-        // see `NB` above
-        self.check_expr_coercable_to_type(rhs_expr, rhs_ty_var);
-
         (rhs_ty_var, return_ty)
     }
 
@@ -268,12 +270,11 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                           lhs_expr: &'gcx hir::Expr,
                           lhs_ty: Ty<'tcx>,
                           rhs_expr: &'gcx hir::Expr,
-                          rhs_ty_var: Ty<'tcx>,
+                          rhs_ty: Ty<'tcx>,
                           mut err: &mut errors::DiagnosticBuilder) -> bool {
         // If this function returns true it means a note was printed, so we don't need
         // to print the normal "implementation of `std::ops::Add` might be missing" note
         let mut is_string_addition = false;
-        let rhs_ty = self.check_expr_coercable_to_type(rhs_expr, rhs_ty_var);
         if let TyRef(_, l_ty) = lhs_ty.sty {
             if let TyRef(_, r_ty) = rhs_ty.sty {
                 if l_ty.ty.sty == TyStr && r_ty.ty.sty == TyStr {

src/test/compile-fail/issue-40610.rs

@@ -0,0 +1,16 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn f(_: &[f32]) {}
+
+fn main() {
+    () + f(&[1.0]);
+    //~^ ERROR binary operation `+` cannot be applied to type `()`
+}

src/test/compile-fail/issue-40861.rs

@@ -0,0 +1,16 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn f(_: &[f32]) {}
+
+fn main() {
+    ()[f(&[1.0])];
+    //~^ ERROR cannot index a value of type `()`
+}

src/test/run-make/extern-fn-struct-passing-abi/test.c

@@ -132,6 +132,21 @@ void byval_rect_with_float(int32_t a, int32_t b, float c, int32_t d,
     assert(s.d == 556);
 }
 
+// System V x86_64 ABI:
+// a, b, d, e, f should be byval pointer (on the stack)
+// g passed via register (fixes #41375)
+//
+// Win64 ABI:
+// a, b, d, e, f, g should be byval pointer
+void byval_rect_with_many_huge(struct Huge a, struct Huge b, struct Huge c,
+                               struct Huge d, struct Huge e, struct Huge f,
+                               struct Rect g) {
+    assert(g.a == 123);
+    assert(g.b == 456);
+    assert(g.c == 789);
+    assert(g.d == 420);
+}
+
 // System V x86_64 & Win64 ABI:
 // a, b should be in registers
 // s should be split across 2 integer registers

src/test/run-make/extern-fn-struct-passing-abi/test.rs

@@ -57,6 +57,8 @@ extern {
 
     fn byval_rect_with_float(a: i32, b: i32, c: f32, d: i32, e: i32, f: i32, s: Rect);
 
+    fn byval_rect_with_many_huge(a: Huge, b: Huge, c: Huge, d: Huge, e: Huge, f: Huge, g: Rect);
+
     fn split_rect(a: i32, b: i32, s: Rect);
 
     fn split_rect_floats(a: f32, b: f32, s: FloatRect);
@@ -85,6 +87,12 @@ fn main() {
         byval_many_rect(1, 2, 3, 4, 5, 6, s);
         byval_rect_floats(1., 2., 3., 4., 5., 6., 7., s, u);
         byval_rect_with_float(1, 2, 3.0, 4, 5, 6, s);
+        byval_rect_with_many_huge(v, v, v, v, v, v, Rect {
+            a: 123,
+            b: 456,
+            c: 789,
+            d: 420
+        });
         split_rect(1, 2, s);
         split_rect_floats(1., 2., u);
         split_rect_with_floats(1, 2, 3.0, 4, 5.0, 6, s);

src/test/run-make/multiple-emits/Makefile

@@ -0,0 +1,7 @@
+-include ../tools.mk
+
+all:
+	$(RUSTC) foo.rs --emit=asm,llvm-ir -o $(TMPDIR)/out 2>&1
+	rm $(TMPDIR)/out.ll $(TMPDIR)/out.s
+	$(RUSTC) foo.rs --emit=asm,llvm-ir -o $(TMPDIR)/out2.ext 2>&1
+	rm $(TMPDIR)/out2.ll $(TMPDIR)/out2.s

src/test/run-make/multiple-emits/foo.rs

@@ -0,0 +1,11 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn main() {}