1 files changed, 12 insertions, 3 deletions
diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
index 35186778671..c39c934b162 100644
--- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
@@ -319,7 +319,11 @@ static Attribute::AttrKind fromRust(LLVMRustAttributeKind Kind) {
   case LLVMRustAttributeKind::NoAlias:
     return Attribute::NoAlias;
   case LLVMRustAttributeKind::NoCapture:
+#if LLVM_VERSION_GE(21, 0)
+    report_fatal_error("NoCapture doesn't exist in LLVM 21");
+#else
     return Attribute::NoCapture;
+#endif
   case LLVMRustAttributeKind::NoCfCheck:
     return Attribute::NoCfCheck;
   case LLVMRustAttributeKind::NoInline:
@@ -431,6 +435,12 @@ extern "C" void LLVMRustEraseInstFromParent(LLVMValueRef Instr) {
 
 extern "C" LLVMAttributeRef
 LLVMRustCreateAttrNoValue(LLVMContextRef C, LLVMRustAttributeKind RustAttr) {
+#if LLVM_VERSION_GE(21, 0)
+  // LLVM 21 replaced the NoCapture attribute with Captures(none).
+  if (RustAttr == LLVMRustAttributeKind::NoCapture) {
+    return wrap(Attribute::getWithCaptureInfo(*unwrap(C), CaptureInfo::none()));
+  }
+#endif
   return wrap(Attribute::get(*unwrap(C), fromRust(RustAttr)));
 }
 
@@ -955,7 +965,8 @@ extern "C" LLVMValueRef LLVMRustGetLastInstruction(LLVMBasicBlockRef BB) {
   return nullptr;
 }
 
-extern "C" void LLVMRustEraseInstBefore(LLVMBasicBlockRef bb, LLVMValueRef I) {
+extern "C" void LLVMRustEraseInstUntilInclusive(LLVMBasicBlockRef bb,
+                                                LLVMValueRef I) {
   auto &BB = *unwrap(bb);
   auto &Inst = *unwrap<Instruction>(I);
   auto It = BB.begin();
@@ -963,8 +974,6 @@ extern "C" void LLVMRustEraseInstBefore(LLVMBasicBlockRef bb, LLVMValueRef I) {
     ++It;
   // Make sure we found the Instruction.
   assert(It != BB.end());
-  // We don't want to erase the instruction itself.
-  It--;
   // Delete in rev order to ensure no dangling references.
   while (It != BB.begin()) {
     auto Prev = std::prev(It);