vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
355 lines
12 KiB
C++
355 lines
12 KiB
C++
//===------ SemaWasm.cpp ---- WebAssembly target-specific routines --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements semantic analysis functions specific to WebAssembly.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/SemaWasm.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/Type.h"
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#include "clang/Basic/AddressSpaces.h"
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#include "clang/Basic/DiagnosticSema.h"
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#include "clang/Basic/TargetBuiltins.h"
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#include "clang/Sema/Attr.h"
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#include "clang/Sema/Sema.h"
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namespace clang {
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SemaWasm::SemaWasm(Sema &S) : SemaBase(S) {}
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/// Checks the argument at the given index is a WebAssembly table and if it
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/// is, sets ElTy to the element type.
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static bool CheckWasmBuiltinArgIsTable(Sema &S, CallExpr *E, unsigned ArgIndex,
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QualType &ElTy) {
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Expr *ArgExpr = E->getArg(ArgIndex);
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const auto *ATy = dyn_cast<ArrayType>(ArgExpr->getType());
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if (!ATy || !ATy->getElementType().isWebAssemblyReferenceType()) {
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return S.Diag(ArgExpr->getBeginLoc(),
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diag::err_wasm_builtin_arg_must_be_table_type)
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<< ArgIndex + 1 << ArgExpr->getSourceRange();
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}
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ElTy = ATy->getElementType();
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return false;
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}
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/// Checks the argument at the given index is an integer.
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static bool CheckWasmBuiltinArgIsInteger(Sema &S, CallExpr *E,
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unsigned ArgIndex) {
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Expr *ArgExpr = E->getArg(ArgIndex);
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if (!ArgExpr->getType()->isIntegerType()) {
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return S.Diag(ArgExpr->getBeginLoc(),
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diag::err_wasm_builtin_arg_must_be_integer_type)
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<< ArgIndex + 1 << ArgExpr->getSourceRange();
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}
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return false;
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}
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bool SemaWasm::BuiltinWasmRefNullExtern(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, /*DesiredArgCount=*/0))
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return true;
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TheCall->setType(getASTContext().getWebAssemblyExternrefType());
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return false;
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}
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bool SemaWasm::BuiltinWasmRefIsNullExtern(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 1)) {
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return true;
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}
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Expr *ArgExpr = TheCall->getArg(0);
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if (!ArgExpr->getType().isWebAssemblyExternrefType()) {
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SemaRef.Diag(ArgExpr->getBeginLoc(),
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diag::err_wasm_builtin_arg_must_be_externref_type)
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<< 1 << ArgExpr->getSourceRange();
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return true;
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}
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return false;
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}
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bool SemaWasm::BuiltinWasmRefNullFunc(CallExpr *TheCall) {
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ASTContext &Context = getASTContext();
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if (SemaRef.checkArgCount(TheCall, /*DesiredArgCount=*/0))
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return true;
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// This custom type checking code ensures that the nodes are as expected
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// in order to later on generate the necessary builtin.
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QualType Pointee = Context.getFunctionType(Context.VoidTy, {}, {});
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QualType Type = Context.getPointerType(Pointee);
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Pointee = Context.getAddrSpaceQualType(Pointee, LangAS::wasm_funcref);
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Type = Context.getAttributedType(attr::WebAssemblyFuncref, Type,
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Context.getPointerType(Pointee));
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TheCall->setType(Type);
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return false;
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}
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/// Check that the first argument is a WebAssembly table, and the second
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/// is an index to use as index into the table.
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bool SemaWasm::BuiltinWasmTableGet(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 2))
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return true;
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QualType ElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 0, ElTy))
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return true;
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if (CheckWasmBuiltinArgIsInteger(SemaRef, TheCall, 1))
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return true;
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// If all is well, we set the type of TheCall to be the type of the
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// element of the table.
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// i.e. a table.get on an externref table has type externref,
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// or whatever the type of the table element is.
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TheCall->setType(ElTy);
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return false;
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}
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/// Check that the first argumnet is a WebAssembly table, the second is
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/// an index to use as index into the table and the third is the reference
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/// type to set into the table.
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bool SemaWasm::BuiltinWasmTableSet(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 3))
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return true;
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QualType ElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 0, ElTy))
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return true;
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if (CheckWasmBuiltinArgIsInteger(SemaRef, TheCall, 1))
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return true;
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if (!getASTContext().hasSameType(ElTy, TheCall->getArg(2)->getType()))
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return true;
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return false;
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}
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/// Check that the argument is a WebAssembly table.
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bool SemaWasm::BuiltinWasmTableSize(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 1))
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return true;
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QualType ElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 0, ElTy))
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return true;
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return false;
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}
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/// Check that the first argument is a WebAssembly table, the second is the
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/// value to use for new elements (of a type matching the table type), the
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/// third value is an integer.
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bool SemaWasm::BuiltinWasmTableGrow(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 3))
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return true;
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QualType ElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 0, ElTy))
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return true;
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Expr *NewElemArg = TheCall->getArg(1);
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if (!getASTContext().hasSameType(ElTy, NewElemArg->getType())) {
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return Diag(NewElemArg->getBeginLoc(),
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diag::err_wasm_builtin_arg_must_match_table_element_type)
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<< 2 << 1 << NewElemArg->getSourceRange();
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}
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if (CheckWasmBuiltinArgIsInteger(SemaRef, TheCall, 2))
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return true;
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return false;
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}
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/// Check that the first argument is a WebAssembly table, the second is an
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/// integer, the third is the value to use to fill the table (of a type
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/// matching the table type), and the fourth is an integer.
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bool SemaWasm::BuiltinWasmTableFill(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 4))
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return true;
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QualType ElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 0, ElTy))
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return true;
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if (CheckWasmBuiltinArgIsInteger(SemaRef, TheCall, 1))
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return true;
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Expr *NewElemArg = TheCall->getArg(2);
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if (!getASTContext().hasSameType(ElTy, NewElemArg->getType())) {
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return Diag(NewElemArg->getBeginLoc(),
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diag::err_wasm_builtin_arg_must_match_table_element_type)
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<< 3 << 1 << NewElemArg->getSourceRange();
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}
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if (CheckWasmBuiltinArgIsInteger(SemaRef, TheCall, 3))
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return true;
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return false;
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}
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/// Check that the first argument is a WebAssembly table, the second is also a
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/// WebAssembly table (of the same element type), and the third to fifth
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/// arguments are integers.
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bool SemaWasm::BuiltinWasmTableCopy(CallExpr *TheCall) {
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if (SemaRef.checkArgCount(TheCall, 5))
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return true;
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QualType XElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 0, XElTy))
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return true;
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QualType YElTy;
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if (CheckWasmBuiltinArgIsTable(SemaRef, TheCall, 1, YElTy))
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return true;
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Expr *TableYArg = TheCall->getArg(1);
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if (!getASTContext().hasSameType(XElTy, YElTy)) {
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return Diag(TableYArg->getBeginLoc(),
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diag::err_wasm_builtin_arg_must_match_table_element_type)
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<< 2 << 1 << TableYArg->getSourceRange();
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}
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for (int I = 2; I <= 4; I++) {
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if (CheckWasmBuiltinArgIsInteger(SemaRef, TheCall, I))
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return true;
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}
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return false;
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}
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bool SemaWasm::CheckWebAssemblyBuiltinFunctionCall(const TargetInfo &TI,
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unsigned BuiltinID,
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CallExpr *TheCall) {
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switch (BuiltinID) {
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case WebAssembly::BI__builtin_wasm_ref_null_extern:
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return BuiltinWasmRefNullExtern(TheCall);
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case WebAssembly::BI__builtin_wasm_ref_null_func:
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return BuiltinWasmRefNullFunc(TheCall);
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case WebAssembly::BI__builtin_wasm_ref_is_null_extern:
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return BuiltinWasmRefIsNullExtern(TheCall);
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case WebAssembly::BI__builtin_wasm_table_get:
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return BuiltinWasmTableGet(TheCall);
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case WebAssembly::BI__builtin_wasm_table_set:
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return BuiltinWasmTableSet(TheCall);
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case WebAssembly::BI__builtin_wasm_table_size:
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return BuiltinWasmTableSize(TheCall);
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case WebAssembly::BI__builtin_wasm_table_grow:
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return BuiltinWasmTableGrow(TheCall);
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case WebAssembly::BI__builtin_wasm_table_fill:
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return BuiltinWasmTableFill(TheCall);
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case WebAssembly::BI__builtin_wasm_table_copy:
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return BuiltinWasmTableCopy(TheCall);
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}
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return false;
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}
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WebAssemblyImportModuleAttr *
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SemaWasm::mergeImportModuleAttr(Decl *D,
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const WebAssemblyImportModuleAttr &AL) {
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auto *FD = cast<FunctionDecl>(D);
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if (const auto *ExistingAttr = FD->getAttr<WebAssemblyImportModuleAttr>()) {
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if (ExistingAttr->getImportModule() == AL.getImportModule())
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return nullptr;
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Diag(ExistingAttr->getLocation(), diag::warn_mismatched_import)
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<< 0 << ExistingAttr->getImportModule() << AL.getImportModule();
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Diag(AL.getLoc(), diag::note_previous_attribute);
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return nullptr;
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}
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if (FD->hasBody()) {
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Diag(AL.getLoc(), diag::warn_import_on_definition) << 0;
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return nullptr;
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}
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return ::new (getASTContext())
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WebAssemblyImportModuleAttr(getASTContext(), AL, AL.getImportModule());
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}
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WebAssemblyImportNameAttr *
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SemaWasm::mergeImportNameAttr(Decl *D, const WebAssemblyImportNameAttr &AL) {
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auto *FD = cast<FunctionDecl>(D);
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if (const auto *ExistingAttr = FD->getAttr<WebAssemblyImportNameAttr>()) {
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if (ExistingAttr->getImportName() == AL.getImportName())
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return nullptr;
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Diag(ExistingAttr->getLocation(), diag::warn_mismatched_import)
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<< 1 << ExistingAttr->getImportName() << AL.getImportName();
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Diag(AL.getLoc(), diag::note_previous_attribute);
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return nullptr;
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}
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if (FD->hasBody()) {
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Diag(AL.getLoc(), diag::warn_import_on_definition) << 1;
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return nullptr;
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}
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return ::new (getASTContext())
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WebAssemblyImportNameAttr(getASTContext(), AL, AL.getImportName());
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}
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void SemaWasm::handleWebAssemblyImportModuleAttr(Decl *D,
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const ParsedAttr &AL) {
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auto *FD = cast<FunctionDecl>(D);
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StringRef Str;
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SourceLocation ArgLoc;
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if (!SemaRef.checkStringLiteralArgumentAttr(AL, 0, Str, &ArgLoc))
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return;
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if (FD->hasBody()) {
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Diag(AL.getLoc(), diag::warn_import_on_definition) << 0;
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return;
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}
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FD->addAttr(::new (getASTContext())
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WebAssemblyImportModuleAttr(getASTContext(), AL, Str));
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}
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void SemaWasm::handleWebAssemblyImportNameAttr(Decl *D, const ParsedAttr &AL) {
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auto *FD = cast<FunctionDecl>(D);
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StringRef Str;
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SourceLocation ArgLoc;
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if (!SemaRef.checkStringLiteralArgumentAttr(AL, 0, Str, &ArgLoc))
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return;
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if (FD->hasBody()) {
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Diag(AL.getLoc(), diag::warn_import_on_definition) << 1;
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return;
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}
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FD->addAttr(::new (getASTContext())
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WebAssemblyImportNameAttr(getASTContext(), AL, Str));
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}
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void SemaWasm::handleWebAssemblyExportNameAttr(Decl *D, const ParsedAttr &AL) {
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ASTContext &Context = getASTContext();
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if (!isFuncOrMethodForAttrSubject(D)) {
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Diag(D->getLocation(), diag::warn_attribute_wrong_decl_type)
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<< AL << AL.isRegularKeywordAttribute() << ExpectedFunction;
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return;
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}
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auto *FD = cast<FunctionDecl>(D);
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if (FD->isThisDeclarationADefinition()) {
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Diag(D->getLocation(), diag::err_alias_is_definition) << FD << 0;
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return;
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}
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StringRef Str;
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SourceLocation ArgLoc;
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if (!SemaRef.checkStringLiteralArgumentAttr(AL, 0, Str, &ArgLoc))
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return;
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D->addAttr(::new (Context) WebAssemblyExportNameAttr(Context, AL, Str));
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D->addAttr(UsedAttr::CreateImplicit(Context));
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}
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} // namespace clang
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