[clang][bytecode] Implement (N)EQ between fixed point and integral #110358
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Convert the non-fixed-point side to a fixed-point type before doing the comparison.
llvmbot
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clang
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@llvm/pr-subscribers-clang Author: Timm Baeder (tbaederr) ChangesConvert the non-fixed-point side to a fixed-point type before doing the comparison. Full diff: https://github.com/llvm/llvm-project/pull/110358.diff 3 Files Affected:
diff --git a/clang/lib/AST/ByteCode/Compiler.cpp b/clang/lib/AST/ByteCode/Compiler.cpp
index 8875fc05d24bee..a80d973056db43 100644
--- a/clang/lib/AST/ByteCode/Compiler.cpp
+++ b/clang/lib/AST/ByteCode/Compiler.cpp
@@ -773,6 +773,8 @@ bool Compiler<Emitter>::VisitBinaryOperator(const BinaryOperator *BO) {
RHS->getType()->isAnyComplexType()) &&
BO->isComparisonOp())
return this->emitComplexComparison(LHS, RHS, BO);
+ if (LHS->getType()->isFixedPointType() || RHS->getType()->isFixedPointType())
+ return this->VisitFixedPointBinOp(BO);
if (BO->isPtrMemOp()) {
if (!this->visit(LHS))
@@ -1469,6 +1471,55 @@ bool Compiler<Emitter>::VisitVectorBinOp(const BinaryOperator *E) {
return true;
}
+template <class Emitter>
+bool Compiler<Emitter>::VisitFixedPointBinOp(const BinaryOperator *E) {
+ const Expr *LHS = E->getLHS();
+ const Expr *RHS = E->getRHS();
+
+ assert(LHS->getType()->isFixedPointType() ||
+ RHS->getType()->isFixedPointType());
+
+ if (!this->visit(LHS))
+ return false;
+ if (!LHS->getType()->isFixedPointType()) {
+ auto Sem = Ctx.getASTContext().getFixedPointSemantics(LHS->getType());
+ uint32_t I;
+ std::memcpy(&I, &Sem, sizeof(Sem));
+ if (!this->emitCastIntegralFixedPoint(classifyPrim(LHS->getType()), I, E))
+ return false;
+ }
+ if (!this->visit(RHS))
+ return false;
+ if (!RHS->getType()->isFixedPointType()) {
+ auto Sem = Ctx.getASTContext().getFixedPointSemantics(RHS->getType());
+ uint32_t I;
+ std::memcpy(&I, &Sem, sizeof(Sem));
+ if (!this->emitCastIntegralFixedPoint(classifyPrim(RHS->getType()), I, E))
+ return false;
+ }
+
+ switch (E->getOpcode()) {
+ case BO_EQ:
+ return this->emitEQFixedPoint(E);
+ case BO_NE:
+ return this->emitNEFixedPoint(E);
+#if 0
+ case BO_LT:
+ return this->emitLTFixedPoint(E);
+ case BO_LE:
+ return this->emitLEFixedPoint(E);
+ case BO_GT:
+ return this->emitGTFixedPoint(E);
+ case BO_GE:
+ return this->emitGEFixedPoint(E);
+#endif
+ default:
+ return this->emitInvalid(E);
+ }
+
+ llvm_unreachable("unhandled binop opcode");
+}
+
template <class Emitter>
bool Compiler<Emitter>::VisitImplicitValueInitExpr(
const ImplicitValueInitExpr *E) {
diff --git a/clang/lib/AST/ByteCode/Compiler.h b/clang/lib/AST/ByteCode/Compiler.h
index d1911f11603a08..5349b184572b6e 100644
--- a/clang/lib/AST/ByteCode/Compiler.h
+++ b/clang/lib/AST/ByteCode/Compiler.h
@@ -132,6 +132,7 @@ class Compiler : public ConstStmtVisitor<Compiler<Emitter>, bool>,
bool VisitPointerArithBinOp(const BinaryOperator *E);
bool VisitComplexBinOp(const BinaryOperator *E);
bool VisitVectorBinOp(const BinaryOperator *E);
+ bool VisitFixedPointBinOp(const BinaryOperator *E);
bool VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *E);
bool VisitCallExpr(const CallExpr *E);
bool VisitBuiltinCallExpr(const CallExpr *E, unsigned BuiltinID);
diff --git a/clang/test/AST/ByteCode/fixed-point.cpp b/clang/test/AST/ByteCode/fixed-point.cpp
index 77000c08918256..51ea166748730c 100644
--- a/clang/test/AST/ByteCode/fixed-point.cpp
+++ b/clang/test/AST/ByteCode/fixed-point.cpp
@@ -6,17 +6,22 @@ static_assert(!((bool)0.0k));
static_assert((bool)0.0k); // both-error {{static assertion failed}}
static_assert(1.0k == 1.0k);
+static_assert(1.0k == 1);
static_assert(1.0k != 1.0k); // both-error {{failed due to requirement '1.0k != 1.0k'}}
+static_assert(1.0k != 1); // both-error {{failed due to requirement '1.0k != 1'}}
static_assert(-12.0k == -(-(-12.0k)));
/// Zero-init.
constexpr _Accum A{};
static_assert(A == 0.0k);
+static_assert(A == 0);
namespace IntToFixedPointCast {
constexpr _Accum B = 13;
static_assert(B == 13.0k);
+ static_assert(B == 13);
constexpr _Fract sf = -1;
static_assert(sf == -1.0k);
+ static_assert(sf == -1);
}
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/88/builds/2903 Here is the relevant piece of the build log for the reference |
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Convert the non-fixed-point side to a fixed-point type before doing the comparison.