[clang] [AArch64][SME] Warn when using a streaming builtin from a non-streaming function (PR #74064)
Sander de Smalen via cfe-commits
cfe-commits at lists.llvm.org
Wed Dec 6 05:21:56 PST 2023
================
@@ -3183,6 +3140,114 @@ bool Sema::CheckSVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
return HasError;
}
+static ArmStreamingType getArmStreamingFnType(const FunctionDecl *FD) {
+ if (FD->hasAttr<ArmLocallyStreamingAttr>())
+ return ArmStreaming;
+ if (const auto *T = FD->getType()->getAs<FunctionProtoType>()) {
+ if (T->getAArch64SMEAttributes() & FunctionType::SME_PStateSMEnabledMask)
+ return ArmStreaming;
+ if (T->getAArch64SMEAttributes() & FunctionType::SME_PStateSMCompatibleMask)
+ return ArmStreamingCompatible;
+ }
+ return ArmNonStreaming;
+}
+
+static void checkArmStreamingBuiltin(Sema &S, CallExpr *TheCall,
+ const FunctionDecl *FD,
+ ArmStreamingType BuiltinType) {
+ ArmStreamingType FnType = getArmStreamingFnType(FD);
+
+ if (FnType == ArmStreaming && BuiltinType == ArmNonStreaming) {
+ S.Diag(TheCall->getBeginLoc(), diag::warn_attribute_arm_sm_incompat_builtin)
+ << TheCall->getSourceRange() << "streaming";
+ }
+
+ if (FnType == ArmStreamingCompatible &&
+ BuiltinType != ArmStreamingCompatible) {
+ S.Diag(TheCall->getBeginLoc(), diag::warn_attribute_arm_sm_incompat_builtin)
+ << TheCall->getSourceRange() << "streaming compatible";
+ return;
+ }
+
+ if (FnType == ArmNonStreaming && BuiltinType == ArmStreaming) {
+ S.Diag(TheCall->getBeginLoc(), diag::warn_attribute_arm_sm_incompat_builtin)
+ << TheCall->getSourceRange() << "non-streaming";
+ }
+}
+
+static bool hasSMEZAState(const FunctionDecl *FD) {
+ if (FD->hasAttr<ArmNewZAAttr>())
+ return true;
+ if (const auto *T = FD->getType()->getAs<FunctionProtoType>())
+ if (T->getAArch64SMEAttributes() & FunctionType::SME_PStateZASharedMask)
+ return true;
+ return false;
+}
+
+static bool hasSMEZAState(unsigned BuiltinID) {
+ switch (BuiltinID) {
+ default:
+ return false;
+#define GET_SME_BUILTIN_HAS_ZA_STATE
+#include "clang/Basic/arm_sme_builtins_za_state.inc"
+#undef GET_SME_BUILTIN_HAS_ZA_STATE
+ }
+}
+
+bool Sema::CheckSMEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
+ if (const FunctionDecl *FD = getCurFunctionDecl()) {
+ std::optional<ArmStreamingType> BuiltinType;
+
+ switch (BuiltinID) {
+ default:
+ break;
+#define GET_SME_STREAMING_ATTRS
+#include "clang/Basic/arm_sme_streaming_attrs.inc"
+#undef GET_SME_STREAMING_ATTRS
+ }
+
+ if (BuiltinType)
+ checkArmStreamingBuiltin(*this, TheCall, FD, *BuiltinType);
+
+ if (hasSMEZAState(BuiltinID) && !hasSMEZAState(FD))
+ Diag(TheCall->getBeginLoc(),
+ diag::warn_attribute_arm_za_builtin_no_za_state)
+ << TheCall->getSourceRange();
+ }
+
+ // Range check SME intrinsics that take immediate values.
+ SmallVector<std::tuple<int, int, int>, 3> ImmChecks;
+
+ switch (BuiltinID) {
+ default:
+ return false;
+#define GET_SME_IMMEDIATE_CHECK
+#include "clang/Basic/arm_sme_sema_rangechecks.inc"
+#undef GET_SME_IMMEDIATE_CHECK
+ }
+
+ return ParseSVEImmChecks(TheCall, ImmChecks);
+}
+
+bool Sema::CheckSVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
----------------
sdesmalen-arm wrote:
Can you commit the change to move the immediate checks to `ParseSVEImmChecks` as an NFC patch and rebase this one?
https://github.com/llvm/llvm-project/pull/74064
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