iswitch

1 files changed, 23 insertions, 0 deletions

diff --git a/src/llvm.cff b/src/llvm.cff
index e64d2e3..9ad67a2 100644
--- a/src/llvm.cff
+++ b/src/llvm.cff
@@ -883,6 +883,29 @@ fn genstmt(f *Fn, block *Block, st *Stmt) void {
          let retty = f.ty.u.Fn.ret;
          gen("\tret %t %v\n", retty, convert(f, retty, e));
       }
+   case ISwitch *sw;
+      static swid int = {};
+      let id = swid++;
+      let test = genexpr(f, &sw.ex);
+      gen("\tswitch %t %v, label %%ISx%d [", test.ty, test);
+      foreach (c, i, sw.cs) {
+         foreach_ptr (ex, _, c.es) {
+            let t = convert(f, test.ty, ex);
+            gen(" %t %v, label %%IS%d.%d ", t.ty, t, id, i);
+         }
+      }
+      gen(" ]\n");
+      foreach (c, i, sw.cs) {
+         gen("IS%d.%d: ", id, i);
+         genblock(f, c.t);
+         gen("\tbr label %%ISe%d\n", id);
+      }
+      gen("ISx%d: ", id);
+      genblock(f, sw.f);
+      gen("\tbr label %%ISe%d\n", id);
+      gen("ISe%d: ", id);
+      nop();
+
    case else
       assert(#f, "stmt? %d", st.u.#tag);
    }