Auto merge of #135277 - matthiaskrgr:rollup-0k61sf8, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #128110 (Suggest Replacing Comma with Semicolon in Incorrect Repeat Expressions)
 - #134609 (Add new `{x86_64,i686}-win7-windows-gnu` targets)
 - #134875 (Implement `const Destruct` in old solver)
 - #135221 (Include rustc and rustdoc book in replace-version-placeholder)
 - #135231 (bootstrap: Add more comments to some of the test steps)
 - #135256 (Move `mod cargo`  below the import statements)

Failed merges:

 - #135195 (Make `lit_to_mir_constant` and `lit_to_const` infallible)

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

3 files changed, 70 insertions, 1 deletions

diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index 0dc1d795a8e..a149f682c56 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -1812,9 +1812,11 @@ supported_targets! {
     ("aarch64-unknown-illumos", aarch64_unknown_illumos),
 
     ("x86_64-pc-windows-gnu", x86_64_pc_windows_gnu),
+    ("x86_64-uwp-windows-gnu", x86_64_uwp_windows_gnu),
+    ("x86_64-win7-windows-gnu", x86_64_win7_windows_gnu),
     ("i686-pc-windows-gnu", i686_pc_windows_gnu),
     ("i686-uwp-windows-gnu", i686_uwp_windows_gnu),
-    ("x86_64-uwp-windows-gnu", x86_64_uwp_windows_gnu),
+    ("i686-win7-windows-gnu", i686_win7_windows_gnu),
 
     ("aarch64-pc-windows-gnullvm", aarch64_pc_windows_gnullvm),
     ("i686-pc-windows-gnullvm", i686_pc_windows_gnullvm),
diff --git a/compiler/rustc_target/src/spec/targets/i686_win7_windows_gnu.rs b/compiler/rustc_target/src/spec/targets/i686_win7_windows_gnu.rs
new file mode 100644
index 00000000000..086a799a68c
--- /dev/null
+++ b/compiler/rustc_target/src/spec/targets/i686_win7_windows_gnu.rs
@@ -0,0 +1,35 @@
+use crate::spec::{Cc, FramePointer, LinkerFlavor, Lld, Target, base};
+
+pub(crate) fn target() -> Target {
+    let mut base = base::windows_gnu::opts();
+    base.vendor = "win7".into();
+    base.cpu = "pentium4".into();
+    base.max_atomic_width = Some(64);
+    base.frame_pointer = FramePointer::Always; // Required for backtraces
+    base.linker = Some("i686-w64-mingw32-gcc".into());
+
+    // Mark all dynamic libraries and executables as compatible with the larger 4GiB address
+    // space available to x86 Windows binaries on x86_64.
+    base.add_pre_link_args(LinkerFlavor::Gnu(Cc::No, Lld::No), &[
+        "-m",
+        "i386pe",
+        "--large-address-aware",
+    ]);
+    base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-Wl,--large-address-aware"]);
+
+    Target {
+        llvm_target: "i686-pc-windows-gnu".into(),
+        metadata: crate::spec::TargetMetadata {
+            description: Some("32-bit MinGW (Windows 7+)".into()),
+            tier: Some(3),
+            host_tools: Some(false),
+            std: Some(true),
+        },
+        pointer_width: 32,
+        data_layout: "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
+            i64:64-i128:128-f80:32-n8:16:32-a:0:32-S32"
+            .into(),
+        arch: "x86".into(),
+        options: base,
+    }
+}
diff --git a/compiler/rustc_target/src/spec/targets/x86_64_win7_windows_gnu.rs b/compiler/rustc_target/src/spec/targets/x86_64_win7_windows_gnu.rs
new file mode 100644
index 00000000000..d40df5a3e7d
--- /dev/null
+++ b/compiler/rustc_target/src/spec/targets/x86_64_win7_windows_gnu.rs
@@ -0,0 +1,32 @@
+use crate::spec::{Cc, LinkerFlavor, Lld, Target, base};
+
+pub(crate) fn target() -> Target {
+    let mut base = base::windows_gnu::opts();
+    base.vendor = "win7".into();
+    base.cpu = "x86-64".into();
+    base.plt_by_default = false;
+    // Use high-entropy 64 bit address space for ASLR
+    base.add_pre_link_args(LinkerFlavor::Gnu(Cc::No, Lld::No), &[
+        "-m",
+        "i386pep",
+        "--high-entropy-va",
+    ]);
+    base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m64", "-Wl,--high-entropy-va"]);
+    base.max_atomic_width = Some(64);
+    base.linker = Some("x86_64-w64-mingw32-gcc".into());
+
+    Target {
+        llvm_target: "x86_64-pc-windows-gnu".into(),
+        metadata: crate::spec::TargetMetadata {
+            description: Some("64-bit MinGW (Windows 7+)".into()),
+            tier: Some(3),
+            host_tools: Some(false),
+            std: Some(true),
+        },
+        pointer_width: 64,
+        data_layout:
+            "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
+        arch: "x86_64".into(),
+        options: base,
+    }
+}