ISPC: Support generation for multiple instruction sets

1 files changed, 87 insertions, 0 deletions

diff --git a/Tests/ISPC/ObjectGenex/main.cxx b/Tests/ISPC/ObjectGenex/main.cxx
new file mode 100644
index 0000000..143e74e
--- /dev/null
+++ b/Tests/ISPC/ObjectGenex/main.cxx
@@ -0,0 +1,87 @@
+#include <stdio.h>
+
+/*
+  Define GENERATED_HEADER macro to allow c++ files to include headers
+  generated based on different configuration types.
+*/
+
+/* clang-format off */
+#define GENERATED_HEADER(x) GENERATED_HEADER0(CONFIG_TYPE/x)
+/* clang-format on */
+#define GENERATED_HEADER0(x) GENERATED_HEADER1(x)
+#define GENERATED_HEADER1(x) <x>
+
+#include GENERATED_HEADER(path_to_objs.h)
+
+#include <vector>
+std::vector<std::string> expandList(std::string const& arg)
+{
+  std::vector<std::string> output;
+  // If argument is empty or no `;` just copy the current string
+  if (arg.empty() || arg.find(';') == std::string::npos) {
+    output.emplace_back(arg);
+    return output;
+  }
+
+  std::string newArg;
+  // Break the string at non-escaped semicolons not nested in [].
+  int squareNesting = 0;
+  auto last = arg.begin();
+  auto const cend = arg.end();
+  for (auto c = last; c != cend; ++c) {
+    switch (*c) {
+      case '\\': {
+        // We only want to allow escaping of semicolons.  Other
+        // escapes should not be processed here.
+        auto cnext = c + 1;
+        if ((cnext != cend) && *cnext == ';') {
+          newArg.append(last, c);
+          // Skip over the escape character
+          last = cnext;
+          c = cnext;
+        }
+      } break;
+      case '[': {
+        ++squareNesting;
+      } break;
+      case ']': {
+        --squareNesting;
+      } break;
+      case ';': {
+        // Break the string here if we are not nested inside square
+        // brackets.
+        if (squareNesting == 0) {
+          newArg.append(last, c);
+          // Skip over the semicolon
+          last = c + 1;
+          if (!newArg.empty()) {
+            // Add the last argument if the string is not empty.
+            output.push_back(newArg);
+            newArg.clear();
+          }
+        }
+      } break;
+      default: {
+        // Just append this character.
+      } break;
+    }
+  }
+  newArg.append(last, cend);
+  if (!newArg.empty()) {
+    // Add the last argument if the string is not empty.
+    output.push_back(std::move(newArg));
+  }
+
+  return output;
+}
+
+int main()
+{
+  // determine that the number of object files specified in obj_paths
+  // is equal to the number of arch's
+
+  std::vector<std::string> paths = expandList(obj_paths);
+  const bool correctSize = (paths.size() == ExpectedISPCObjects);
+
+  return (correctSize) ? 0 : 1;
+}