Auto merge of #2712 - RalfJung:rustup, r=RalfJung

Rustup

Author: bors

.mailmap

@@ -73,6 +73,8 @@ Björn Steinbrink <bsteinbr@gmail.com> <B.Steinbrink@gmx.de>
 blake2-ppc <ulrik.sverdrup@gmail.com> <blake2-ppc>
 boolean_coercion <booleancoercion@gmail.com>
 Boris Egorov <jightuse@gmail.com> <egorov@linux.com>
+bors <bors@rust-lang.org> bors[bot] <26634292+bors[bot]@users.noreply.github.com>
+bors <bors@rust-lang.org> bors[bot] <bors[bot]@users.noreply.github.com>
 Braden Nelson <moonheart08@users.noreply.github.com>
 Brandon Sanderson <singingboyo@gmail.com> Brandon Sanderson <singingboyo@hotmail.com>
 Brett Cannon <brett@python.org> Brett Cannon <brettcannon@users.noreply.github.com>
@@ -139,6 +141,10 @@ David Ross <daboross@daboross.net>
 David Wood <david@davidtw.co> <david.wood@huawei.com>
 Deadbeef <ent3rm4n@gmail.com>
 Deadbeef <ent3rm4n@gmail.com> <fee1-dead-beef@protonmail.com>
+dependabot[bot] <dependabot[bot]@users.noreply.github.com> <27856297+dependabot-preview[bot]@users.noreply.github.com>
+dependabot[bot] <dependabot[bot]@users.noreply.github.com> <49699333+dependabot[bot]@users.noreply.github.com>
+dependabot[bot] <dependabot[bot]@users.noreply.github.com> <dependabot-preview[bot]@users.noreply.github.com>
+dependabot[bot] <dependabot[bot]@users.noreply.github.com> <support@dependabot.com>
 Derek Chiang <derekchiang93@gmail.com> Derek Chiang (Enchi Jiang) <derekchiang93@gmail.com>
 DeveloperC <DeveloperC@protonmail.com>
 Devin Ragotzy <devin.ragotzy@gmail.com>
@@ -229,7 +235,7 @@ Jacob <jacob.macritchie@gmail.com>
 Jacob Greenfield <xales@naveria.com>
 Jacob Pratt <jacob@jhpratt.dev> <the.z.cuber@gmail.com>
 Jake Vossen <jake@vossen.dev>
-Jakob Degen <jakob@degen.com>
+Jakob Degen <jakob.e.degen@gmail.com> <jakob@degen.com>
 Jakob Lautrup Nysom <jako3047@gmail.com>
 Jakub Adam Wieczorek <jakub.adam.wieczorek@gmail.com>
 Jakub Adam Wieczorek <jakub.adam.wieczorek@gmail.com> <jakub.bukaj@yahoo.com>
@@ -396,6 +402,10 @@ Nathaniel Herman <nherman@post.harvard.edu> Nathaniel Herman <nherman@college.ha
 Neil Pankey <npankey@gmail.com> <neil@wire.im>
 Ngo Iok Ui (Wu Yu Wei) <wusyong9104@gmail.com>
 Nicholas Baron <nicholas.baron.ten@gmail.com>
+Nicholas Bishop <nbishop@nbishop.net> <nicholasbishop@gmail.com>
+Nicholas Bishop <nbishop@nbishop.net> <nicholasbishop@google.com>
+Nicholas Nethercote <n.nethercote@gmail.com> <nnethercote@apple.com>
+Nicholas Nethercote <n.nethercote@gmail.com> <nnethercote@mozilla.com>
 Nick Platt <platt.nicholas@gmail.com>
 Niclas Schwarzlose <15schnic@gmail.com>
 Nicolas Abram <abramlujan@gmail.com>
@@ -522,6 +532,7 @@ Tomas Koutsky <tomas@stepnivlk.net>
 Torsten Weber <TorstenWeber12@gmail.com>
 Torsten Weber <TorstenWeber12@gmail.com> <torstenweber12@gmail.com>
 Trevor Spiteri <tspiteri@ieee.org> <trevor.spiteri@um.edu.mt>
+Tshepang Mbambo <tshepang@gmail.com>
 Ty Overby <ty@pre-alpha.com>
 Tyler Mandry <tmandry@gmail.com> <tmandry@google.com>
 Tyler Ruckinger <t.ruckinger@gmail.com>

Cargo.lock

@@ -288,7 +288,6 @@ name = "cargo"
 version = "0.68.0"
 dependencies = [
  "anyhow",
- "atty",
  "bytesize",
  "cargo-platform 0.1.2",
  "cargo-test-macro",
@@ -298,7 +297,7 @@ dependencies = [
  "crates-io",
  "curl",
  "curl-sys",
- "env_logger 0.9.0",
+ "env_logger 0.10.0",
  "filetime",
  "flate2",
  "fwdansi",
@@ -312,6 +311,7 @@ dependencies = [
  "ignore",
  "im-rc",
  "indexmap",
+ "is-terminal",
  "itertools",
  "jobserver",
  "lazy_static",
@@ -870,6 +870,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "convert_case"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
+
 [[package]]
 name = "core"
 version = "0.0.0"
@@ -1060,6 +1066,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "derive_more"
+version = "0.99.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
+dependencies = [
+ "convert_case",
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "syn",
+]
+
 [[package]]
 name = "diff"
 version = "0.1.13"
@@ -1213,6 +1232,40 @@ dependencies = [
  "termcolor",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85cdab6a89accf66733ad5a1693a4dcced6aeff64602b634530dd73c1f3ee9f0"
+dependencies = [
+ "humantime 2.0.1",
+ "is-terminal",
+ "log",
+ "regex",
+ "termcolor",
+]
+
+[[package]]
+name = "errno"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1"
+dependencies = [
+ "errno-dragonfly",
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "errno-dragonfly"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "error_index_generator"
 version = "0.0.0"
@@ -1907,6 +1960,28 @@ dependencies = [
  "unic-langid",
 ]
 
+[[package]]
+name = "io-lifetimes"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e394faa0efb47f9f227f1cd89978f854542b318a6f64fa695489c9c993056656"
+dependencies = [
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "is-terminal"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae5bc6e2eb41c9def29a3e0f1306382807764b9b53112030eff57435667352d"
+dependencies = [
+ "hermit-abi 0.2.6",
+ "io-lifetimes",
+ "rustix",
+ "windows-sys",
+]
+
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -2116,6 +2191,12 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f9f08d8963a6c613f4b1a78f4f4a4dbfadf8e6545b2d72861731e4858b8b47f"
+
 [[package]]
 name = "litemap"
 version = "0.6.0"
@@ -3193,6 +3274,7 @@ version = "1.0.0"
 dependencies = [
  "bstr 0.2.17",
  "clap 3.2.20",
+ "libc",
  "libz-sys",
  "rand 0.8.5",
  "regex",
@@ -3916,6 +3998,7 @@ version = "0.0.0"
 dependencies = [
  "bitflags",
  "chalk-ir",
+ "derive_more",
  "either",
  "gsgdt",
  "polonius-engine",
@@ -4508,6 +4591,20 @@ dependencies = [
  "unicode_categories",
 ]
 
+[[package]]
+name = "rustix"
+version = "0.36.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b1fbb4dfc4eb1d390c02df47760bb19a84bb80b301ecc947ab5406394d8223e"
+dependencies = [
+ "bitflags",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.5"

compiler/rustc_abi/src/lib.rs

@@ -211,6 +211,102 @@ pub enum TargetDataLayoutErrors<'a> {
 }
 
 impl TargetDataLayout {
+    /// Parse data layout from an [llvm data layout string](https://llvm.org/docs/LangRef.html#data-layout)
+    ///
+    /// This function doesn't fill `c_enum_min_size` and it will always be `I32` since it can not be
+    /// determined from llvm string.
+    pub fn parse_from_llvm_datalayout_string<'a>(
+        input: &'a str,
+    ) -> Result<TargetDataLayout, TargetDataLayoutErrors<'a>> {
+        // Parse an address space index from a string.
+        let parse_address_space = |s: &'a str, cause: &'a str| {
+            s.parse::<u32>().map(AddressSpace).map_err(|err| {
+                TargetDataLayoutErrors::InvalidAddressSpace { addr_space: s, cause, err }
+            })
+        };
+
+        // Parse a bit count from a string.
+        let parse_bits = |s: &'a str, kind: &'a str, cause: &'a str| {
+            s.parse::<u64>().map_err(|err| TargetDataLayoutErrors::InvalidBits {
+                kind,
+                bit: s,
+                cause,
+                err,
+            })
+        };
+
+        // Parse a size string.
+        let size = |s: &'a str, cause: &'a str| parse_bits(s, "size", cause).map(Size::from_bits);
+
+        // Parse an alignment string.
+        let align = |s: &[&'a str], cause: &'a str| {
+            if s.is_empty() {
+                return Err(TargetDataLayoutErrors::MissingAlignment { cause });
+            }
+            let align_from_bits = |bits| {
+                Align::from_bits(bits)
+                    .map_err(|err| TargetDataLayoutErrors::InvalidAlignment { cause, err })
+            };
+            let abi = parse_bits(s[0], "alignment", cause)?;
+            let pref = s.get(1).map_or(Ok(abi), |pref| parse_bits(pref, "alignment", cause))?;
+            Ok(AbiAndPrefAlign { abi: align_from_bits(abi)?, pref: align_from_bits(pref)? })
+        };
+
+        let mut dl = TargetDataLayout::default();
+        let mut i128_align_src = 64;
+        for spec in input.split('-') {
+            let spec_parts = spec.split(':').collect::<Vec<_>>();
+
+            match &*spec_parts {
+                ["e"] => dl.endian = Endian::Little,
+                ["E"] => dl.endian = Endian::Big,
+                [p] if p.starts_with('P') => {
+                    dl.instruction_address_space = parse_address_space(&p[1..], "P")?
+                }
+                ["a", ref a @ ..] => dl.aggregate_align = align(a, "a")?,
+                ["f32", ref a @ ..] => dl.f32_align = align(a, "f32")?,
+                ["f64", ref a @ ..] => dl.f64_align = align(a, "f64")?,
+                [p @ "p", s, ref a @ ..] | [p @ "p0", s, ref a @ ..] => {
+                    dl.pointer_size = size(s, p)?;
+                    dl.pointer_align = align(a, p)?;
+                }
+                [s, ref a @ ..] if s.starts_with('i') => {
+                    let Ok(bits) = s[1..].parse::<u64>() else {
+                        size(&s[1..], "i")?; // For the user error.
+                        continue;
+                    };
+                    let a = align(a, s)?;
+                    match bits {
+                        1 => dl.i1_align = a,
+                        8 => dl.i8_align = a,
+                        16 => dl.i16_align = a,
+                        32 => dl.i32_align = a,
+                        64 => dl.i64_align = a,
+                        _ => {}
+                    }
+                    if bits >= i128_align_src && bits <= 128 {
+                        // Default alignment for i128 is decided by taking the alignment of
+                        // largest-sized i{64..=128}.
+                        i128_align_src = bits;
+                        dl.i128_align = a;
+                    }
+                }
+                [s, ref a @ ..] if s.starts_with('v') => {
+                    let v_size = size(&s[1..], "v")?;
+                    let a = align(a, s)?;
+                    if let Some(v) = dl.vector_align.iter_mut().find(|v| v.0 == v_size) {
+                        v.1 = a;
+                        continue;
+                    }
+                    // No existing entry, add a new one.
+                    dl.vector_align.push((v_size, a));
+                }
+                _ => {} // Ignore everything else.
+            }
+        }
+        Ok(dl)
+    }
+
     /// Returns exclusive upper bound on object size.
     ///
     /// The theoretical maximum object size is defined as the maximum positive `isize` value.