From 027db5d036768ba8b0e36cb1b9f3f0ed1e3da000 Mon Sep 17 00:00:00 2001
From: Augie Fackler <augie@google.com>
Date: Tue, 24 Aug 2021 09:44:17 -0400
Subject: [PATCH] RustWrapper: adapt to LLVM change 0f45c16f2caa

The above-mentioned commit (part of the LLVM 14 development cycle)
removes a method that rustc uses somewhat extensively. We mostly switch
to lower-level methods that exist in all versions of LLVM we use, so no
new ifdef logic is required in most cases.
---
 .../rustc_llvm/llvm-wrapper/RustWrapper.cpp   | 23 ++++++++-----------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
index 4edfed03401..4f07a0c67c1 100644
--- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
@@ -270,34 +270,30 @@ extern "C" void LLVMRustAddFunctionAttribute(LLVMValueRef Fn, unsigned Index,
                                              LLVMRustAttribute RustAttr) {
   Function *A = unwrap<Function>(Fn);
   Attribute Attr = Attribute::get(A->getContext(), fromRust(RustAttr));
-  AttrBuilder B(Attr);
-  A->addAttributes(Index, B);
+  A->addAttribute(Index, Attr);
 }
 
 extern "C" void LLVMRustAddAlignmentAttr(LLVMValueRef Fn,
                                          unsigned Index,
                                          uint32_t Bytes) {
   Function *A = unwrap<Function>(Fn);
-  AttrBuilder B;
-  B.addAlignmentAttr(Bytes);
-  A->addAttributes(Index, B);
+  A->addAttribute(Index, Attribute::getWithAlignment(
+      A->getContext(), llvm::Align(Bytes)));
 }
 
 extern "C" void LLVMRustAddDereferenceableAttr(LLVMValueRef Fn, unsigned Index,
                                                uint64_t Bytes) {
   Function *A = unwrap<Function>(Fn);
-  AttrBuilder B;
-  B.addDereferenceableAttr(Bytes);
-  A->addAttributes(Index, B);
+  A->addAttribute(Index, Attribute::getWithDereferenceableBytes(A->getContext(),
+                                                                Bytes));
 }
 
 extern "C" void LLVMRustAddDereferenceableOrNullAttr(LLVMValueRef Fn,
                                                      unsigned Index,
                                                      uint64_t Bytes) {
   Function *A = unwrap<Function>(Fn);
-  AttrBuilder B;
-  B.addDereferenceableOrNullAttr(Bytes);
-  A->addAttributes(Index, B);
+  A->addAttribute(Index, Attribute::getWithDereferenceableOrNullBytes(
+      A->getContext(), Bytes));
 }
 
 extern "C" void LLVMRustAddByValAttr(LLVMValueRef Fn, unsigned Index,
@@ -323,9 +319,8 @@ extern "C" void LLVMRustAddFunctionAttrStringValue(LLVMValueRef Fn,
                                                    const char *Name,
                                                    const char *Value) {
   Function *F = unwrap<Function>(Fn);
-  AttrBuilder B;
-  B.addAttribute(Name, Value);
-  F->addAttributes(Index, B);
+  F->addAttribute(Index, Attribute::get(
+      F->getContext(), StringRef(Name), StringRef(Value)));
 }
 
 extern "C" void LLVMRustRemoveFunctionAttributes(LLVMValueRef Fn,
-- 
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