================
@@ -65,6 +68,200 @@ CIRGenFunction::emitOMPParallelDirective(const
OMPParallelDirective &s) {
return res;
}
+// Helpers and implementation for emitOMPForDirective, which lowers an
+// OMPForDirective into an omp.wsloop + omp.loop_nest.
+
+namespace {
+/// Extract integer literal value from an expression, if present.
+static std::optional<int64_t> getIntLiteralValue(const Expr *expr) {
+ if (const auto *intLit = dyn_cast<IntegerLiteral>(expr->IgnoreImpCasts()))
+ return intLit->getValue().getSExtValue();
+ return std::nullopt;
+}
+
+/// Ensure a CIR value has the given CIR integer type, inserting an integral
+/// cast if necessary. Loads through CIR pointers first.
+static mlir::Value ensureCIRIntType(CIRGenBuilderTy &builder,
+ mlir::Location loc, mlir::Value cirValue,
+ cir::IntType targetCIRType) {
+ if (mlir::isa<cir::PointerType>(cirValue.getType()))
+ cirValue = cir::LoadOp::create(builder, loc, cirValue).getResult();
+
+ if (cirValue.getType() == targetCIRType)
+ return cirValue;
+
+ return builder.createCast(loc, cir::CastKind::integral, cirValue,
+ targetCIRType);
+}
+
+/// Convert a CIR integer value to a standard MLIR integer type suitable for
+/// use as an omp.loop_nest operand.
+static mlir::Value cirIntToStdInt(mlir::OpBuilder &builder, mlir::Location loc,
+ mlir::Value cirValue) {
+ auto cirIntType = mlir::cast<cir::IntType>(cirValue.getType());
+ mlir::Type stdIntType = builder.getIntegerType(cirIntType.getWidth());
+ return mlir::UnrealizedConversionCastOp::create(builder, loc, stdIntType,
+ cirValue)
+ .getResult(0);
+}
+} // anonymous namespace
+
+mlir::LogicalResult
+CIRGenFunction::emitOMPForDirective(const OMPForDirective &s) {
----------------
koparasy wrote:
This does not follow the OG Codegen pattern closely
https://github.com/llvm/llvm-project/blob/main/clang/lib/CodeGen/CGStmtOpenMP.cpp#L4386
https://github.com/llvm/llvm-project/pull/181841
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