Merge pull request #4467 from rust-lang/rustup-2025-07-14

Automatic Rustup

8 files changed, 27 insertions, 33 deletions

diff --git a/compiler/rustc_codegen_llvm/src/asm.rs b/compiler/rustc_codegen_llvm/src/asm.rs
index 9ddadcf16aa..a643a91141e 100644
--- a/compiler/rustc_codegen_llvm/src/asm.rs
+++ b/compiler/rustc_codegen_llvm/src/asm.rs
@@ -384,15 +384,19 @@ impl<'tcx> AsmCodegenMethods<'tcx> for CodegenCx<'_, 'tcx> {
     ) {
         let asm_arch = self.tcx.sess.asm_arch.unwrap();
 
-        // Default to Intel syntax on x86
-        let intel_syntax = matches!(asm_arch, InlineAsmArch::X86 | InlineAsmArch::X86_64)
-            && !options.contains(InlineAsmOptions::ATT_SYNTAX);
-
         // Build the template string
         let mut template_str = String::new();
-        if intel_syntax {
-            template_str.push_str(".intel_syntax\n");
+
+        // On X86 platforms there are two assembly syntaxes. Rust uses intel by default,
+        // but AT&T can be specified explicitly.
+        if matches!(asm_arch, InlineAsmArch::X86 | InlineAsmArch::X86_64) {
+            if options.contains(InlineAsmOptions::ATT_SYNTAX) {
+                template_str.push_str(".att_syntax\n")
+            } else {
+                template_str.push_str(".intel_syntax\n")
+            }
         }
+
         for piece in template {
             match *piece {
                 InlineAsmTemplatePiece::String(ref s) => template_str.push_str(s),
@@ -431,7 +435,11 @@ impl<'tcx> AsmCodegenMethods<'tcx> for CodegenCx<'_, 'tcx> {
                 }
             }
         }
-        if intel_syntax {
+
+        // Just to play it safe, if intel was used, reset the assembly syntax to att.
+        if matches!(asm_arch, InlineAsmArch::X86 | InlineAsmArch::X86_64)
+            && !options.contains(InlineAsmOptions::ATT_SYNTAX)
+        {
             template_str.push_str("\n.att_syntax\n");
         }
 
diff --git a/compiler/rustc_codegen_llvm/src/back/lto.rs b/compiler/rustc_codegen_llvm/src/back/lto.rs
index 9c62244f3c9..74418adc43c 100644
--- a/compiler/rustc_codegen_llvm/src/back/lto.rs
+++ b/compiler/rustc_codegen_llvm/src/back/lto.rs
@@ -680,7 +680,7 @@ pub(crate) fn run_pass_manager(
             if attributes::has_string_attr(function, enzyme_marker) {
                 // Sanity check: Ensure 'noinline' is present before replacing it.
                 assert!(
-                    !attributes::has_attr(function, Function, llvm::AttributeKind::NoInline),
+                    attributes::has_attr(function, Function, llvm::AttributeKind::NoInline),
                     "Expected __enzyme function to have 'noinline' before adding 'alwaysinline'"
                 );
 
diff --git a/compiler/rustc_codegen_llvm/src/back/write.rs b/compiler/rustc_codegen_llvm/src/back/write.rs
index bde6a9cf4bc..506286fc255 100644
--- a/compiler/rustc_codegen_llvm/src/back/write.rs
+++ b/compiler/rustc_codegen_llvm/src/back/write.rs
@@ -1182,7 +1182,7 @@ fn create_msvc_imps(
         .filter_map(|val| {
             // Exclude some symbols that we know are not Rust symbols.
             let name = llvm::get_value_name(val);
-            if ignored(name) { None } else { Some((val, name)) }
+            if ignored(&name) { None } else { Some((val, name)) }
         })
         .map(move |(val, name)| {
             let mut imp_name = prefix.as_bytes().to_vec();
diff --git a/compiler/rustc_codegen_llvm/src/builder.rs b/compiler/rustc_codegen_llvm/src/builder.rs
index d0aa7320b4b..9c3b866aa3c 100644
--- a/compiler/rustc_codegen_llvm/src/builder.rs
+++ b/compiler/rustc_codegen_llvm/src/builder.rs
@@ -538,16 +538,6 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
         }
     }
 
-    fn dynamic_alloca(&mut self, size: &'ll Value, align: Align) -> &'ll Value {
-        unsafe {
-            let alloca =
-                llvm::LLVMBuildArrayAlloca(self.llbuilder, self.cx().type_i8(), size, UNNAMED);
-            llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
-            // Cast to default addrspace if necessary
-            llvm::LLVMBuildPointerCast(self.llbuilder, alloca, self.cx().type_ptr(), UNNAMED)
-        }
-    }
-
     fn load(&mut self, ty: &'ll Type, ptr: &'ll Value, align: Align) -> &'ll Value {
         unsafe {
             let load = llvm::LLVMBuildLoad2(self.llbuilder, ty, ptr, UNNAMED);
diff --git a/compiler/rustc_codegen_llvm/src/builder/autodiff.rs b/compiler/rustc_codegen_llvm/src/builder/autodiff.rs
index b07d9a5cfca..5afb9a60d42 100644
--- a/compiler/rustc_codegen_llvm/src/builder/autodiff.rs
+++ b/compiler/rustc_codegen_llvm/src/builder/autodiff.rs
@@ -306,7 +306,7 @@ fn generate_enzyme_call<'ll>(
     // add outer_fn name to ad_name to make it unique, in case users apply autodiff to multiple
     // functions. Unwrap will only panic, if LLVM gave us an invalid string.
     let name = llvm::get_value_name(outer_fn);
-    let outer_fn_name = std::str::from_utf8(name).unwrap();
+    let outer_fn_name = std::str::from_utf8(&name).unwrap();
     ad_name.push_str(outer_fn_name);
 
     // Let us assume the user wrote the following function square:
diff --git a/compiler/rustc_codegen_llvm/src/consts.rs b/compiler/rustc_codegen_llvm/src/consts.rs
index 21524fd2eb8..5deddb3ed98 100644
--- a/compiler/rustc_codegen_llvm/src/consts.rs
+++ b/compiler/rustc_codegen_llvm/src/consts.rs
@@ -429,7 +429,7 @@ impl<'ll> CodegenCx<'ll, '_> {
                 // specific rules on what can be cast. So instead of adding a new way to
                 // generate static initializers that match the static's type, we picked
                 // the easier option and retroactively change the type of the static item itself.
-                let name = llvm::get_value_name(g).to_vec();
+                let name = llvm::get_value_name(g);
                 llvm::set_value_name(g, b"");
 
                 let linkage = llvm::get_linkage(g);
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 91ada856d59..5c34ab2e304 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -1492,12 +1492,6 @@ unsafe extern "C" {
         Ty: &'a Type,
         Name: *const c_char,
     ) -> &'a Value;
-    pub(crate) fn LLVMBuildArrayAlloca<'a>(
-        B: &Builder<'a>,
-        Ty: &'a Type,
-        Val: &'a Value,
-        Name: *const c_char,
-    ) -> &'a Value;
     pub(crate) fn LLVMBuildLoad2<'a>(
         B: &Builder<'a>,
         Ty: &'a Type,
@@ -1980,12 +1974,12 @@ unsafe extern "C" {
     pub(crate) fn LLVMRustBuildMinNum<'a>(
         B: &Builder<'a>,
         LHS: &'a Value,
-        LHS: &'a Value,
+        RHS: &'a Value,
     ) -> &'a Value;
     pub(crate) fn LLVMRustBuildMaxNum<'a>(
         B: &Builder<'a>,
         LHS: &'a Value,
-        LHS: &'a Value,
+        RHS: &'a Value,
     ) -> &'a Value;
 
     // Atomic Operations
diff --git a/compiler/rustc_codegen_llvm/src/llvm/mod.rs b/compiler/rustc_codegen_llvm/src/llvm/mod.rs
index 661174a80df..3fc83fca352 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/mod.rs
@@ -211,7 +211,7 @@ pub(crate) fn SetFunctionCallConv(fn_: &Value, cc: CallConv) {
 // function.
 // For more details on COMDAT sections see e.g., https://www.airs.com/blog/archives/52
 pub(crate) fn SetUniqueComdat(llmod: &Module, val: &Value) {
-    let name_buf = get_value_name(val).to_vec();
+    let name_buf = get_value_name(val);
     let name =
         CString::from_vec_with_nul(name_buf).or_else(|buf| CString::new(buf.into_bytes())).unwrap();
     set_comdat(llmod, val, &name);
@@ -319,12 +319,14 @@ pub(crate) fn get_param(llfn: &Value, index: c_uint) -> &Value {
     }
 }
 
-/// Safe wrapper for `LLVMGetValueName2` into a byte slice
-pub(crate) fn get_value_name(value: &Value) -> &[u8] {
+/// Safe wrapper for `LLVMGetValueName2`
+/// Needs to allocate the value, because `set_value_name` will invalidate
+/// the pointer.
+pub(crate) fn get_value_name(value: &Value) -> Vec<u8> {
     unsafe {
         let mut len = 0;
         let data = LLVMGetValueName2(value, &mut len);
-        std::slice::from_raw_parts(data.cast(), len)
+        std::slice::from_raw_parts(data.cast(), len).to_vec()
     }
 }