https://github.com/Mr-Anyone updated
https://github.com/llvm/llvm-project/pull/140828
>From 393ccc154e2f1d68ef25d660c8063ab9674ab09b Mon Sep 17 00:00:00 2001
From: Vincent <l...@viceroygroup.ca>
Date: Tue, 20 May 2025 21:25:32 -0400
Subject: [PATCH] [clang][TableGen] Fix Duplicate Entries in TableGen
Fixed TableGen duplicate issues that causes the wrong interrupt
attribute from being selected.
resolves #140701
---
clang/test/AST/ast-dump-riscv-attributes.cpp | 12 ++++++++
clang/utils/TableGen/ClangAttrEmitter.cpp | 31 ++++++++++++++++----
2 files changed, 38 insertions(+), 5 deletions(-)
create mode 100644 clang/test/AST/ast-dump-riscv-attributes.cpp
diff --git a/clang/test/AST/ast-dump-riscv-attributes.cpp
b/clang/test/AST/ast-dump-riscv-attributes.cpp
new file mode 100644
index 0000000000000..7efe626072311
--- /dev/null
+++ b/clang/test/AST/ast-dump-riscv-attributes.cpp
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -triple riscv64 -ast-dump -ast-dump-filter c23 -std=c23 -x
c %s | FileCheck --strict-whitespace %s
+
+// CHECK: FunctionDecl{{.*}}pre_c23
+// CHECK-NEXT: |-CompoundStmt
+// CHECK-NEXT: `-RISCVInterruptAttr{{.*}}supervisor
+__attribute__((interrupt("supervisor"))) void pre_c23(){}
+
+// CHECK: FunctionDecl{{.*}}in_c23
+// CHECK-NEXT: |-CompoundStmt
+// CHECK-NEXT: `-RISCVInterruptAttr{{.*}}supervisor
+// CHECK-NOT: `-RISCVInterruptAttr{{.*}}machine
+[[gnu::interrupt("supervisor")]] void in_c23(){}
diff --git a/clang/utils/TableGen/ClangAttrEmitter.cpp
b/clang/utils/TableGen/ClangAttrEmitter.cpp
index 9684ec9520e5a..094ea0564f2d7 100644
--- a/clang/utils/TableGen/ClangAttrEmitter.cpp
+++ b/clang/utils/TableGen/ClangAttrEmitter.cpp
@@ -20,6 +20,7 @@
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/ErrorHandling.h"
@@ -3667,6 +3668,12 @@ static bool GenerateTargetSpecificAttrChecks(const
Record *R,
static void GenerateHasAttrSpellingStringSwitch(
ArrayRef<std::pair<const Record *, FlattenedSpelling>> Attrs,
raw_ostream &OS, StringRef Variety, StringRef Scope = "") {
+
+ // It turns out that duplicate records for a given spelling. This map
combines
+ // matching test strings using '||'. For example, if there are three
+ // conditions A, B, and C, the final result will be: A || B || C.
+ llvm::StringMap<std::string> TestStringMap;
+
for (const auto &[Attr, Spelling] : Attrs) {
// C++11-style attributes have specific version information associated with
// them. If the attribute has no scope, the version information must not
@@ -3727,12 +3734,26 @@ static void GenerateHasAttrSpellingStringSwitch(
}
}
- std::string TestStr = !Test.empty()
- ? Test + " ? " + itostr(Version) + " : 0"
- : itostr(Version);
- if (Scope.empty() || Scope == Spelling.nameSpace())
- OS << " .Case(\"" << Spelling.name() << "\", " << TestStr << ")\n";
+ std::string TestStr =
+ !Test.empty() ? '(' + Test + " ? " + itostr(Version) + " : 0" + ')'
+ : '(' + itostr(Version) + ')';
+
+ if (Scope.empty() || Scope == Spelling.nameSpace()) {
+ if (TestStringMap.contains(Spelling.name())) {
+ TestStringMap[Spelling.name()] += " || " + TestStr;
+ } else {
+ TestStringMap[Spelling.name()] = TestStr;
+ }
+ }
+ }
+
+ // Create the actual string switch statement after all the attributes have
+ // been parsed
+ for (auto &entry : TestStringMap) {
+ OS << " .Case(\"" << entry.getKey() << "\", " << entry.getValue()
+ << ")\n";
}
+
OS << " .Default(0);\n";
}
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