From 49421d1fa382fba84792e5d5dd7721c1c3e0e46e Mon Sep 17 00:00:00 2001
From: mejrs <59372212+mejrs@users.noreply.github.com>
Date: Tue, 24 Jun 2025 16:58:46 +0200
Subject: Remove support for dynamic allocas

---
 compiler/rustc_codegen_llvm/src/builder.rs  | 10 ----------
 compiler/rustc_codegen_llvm/src/llvm/ffi.rs |  6 ------
 2 files changed, 16 deletions(-)

(limited to 'compiler/rustc_codegen_llvm/src')

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/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 91ada856d59..00a6ec7dfba 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,
-- 
cgit 1.4.1-3-g733a5