and/or

1 files changed, 39 insertions, 6 deletions

diff --git a/src/llvm.cff b/src/llvm.cff
index 57390a0..e2659af 100644
--- a/src/llvm.cff
+++ b/src/llvm.cff
@@ -356,6 +356,7 @@ fn convert(f *Fn, to *const Type, ex *Expr) Value {
 }
 
 fn genblock(f *Fn, block Block) Option<Value>;
+fn llvmbool(f *Fn, ex *Expr) Value;
 
 fn genexpr(f *Fn, ex *Expr) Value {
    fold(ex);
@@ -502,9 +503,39 @@ fn genexpr(f *Fn, ex *Expr) Value {
       case '^='; return genassignop("xor", ex.ty, b.lhs, b.rhs);
       case'<<='; return genassignop("shl", ex.ty, b.lhs, b.rhs);
       case'>>='; return genassignop(ex.ty.u.Int.sgn ? "ashr" : "lshr", ex.ty, b.lhs, b.rhs);
-      // case 'and';
-      // case 'or';
-         
+      case 'or';
+         static orid int = {};
+         let id = orid++;
+         let lhs = genexpr(f, b.lhs);
+         let cnd = mktmp(ty_i1);
+         let res = mktmp(ex.ty);
+         gen("\tbr label %%OrEntry%d\n", id);
+         gen("OrEntry%d: ", id);
+         gen("\t%v = icmp ne %t %v, 0\n", cnd, lhs.ty, lhs);
+         gen("\tbr i1 %v, label %%OrT%d, label %%OrF%d\n", cnd, id, id);
+         gen("OrF%d: ", id);
+         let rhs = genexpr(f, b.rhs);
+         gen("\tbr label %%OrT%d\n", cnd, id, id);
+         gen("OrT%d: ", id);
+         gen("\t%v = phi %t [ %v, %%OrEntry%d ], [ %v, %%OrF%d ]\n", res, ex.ty, lhs, id, rhs, id);
+         return res;
+
+      case 'and';
+         static andid int = {};
+         let id = andid++;
+         let lhs = genexpr(f, b.lhs);
+         let cnd = mktmp(ty_i1);
+         let res = mktmp(ex.ty);
+         gen("\tbr label %%AndEntry%d\n", id);
+         gen("AndEntry%d: ", id);
+         gen("\t%v = icmp ne %t %v, 0\n", cnd, lhs.ty, lhs);
+         gen("\tbr i1 %v, label %%AndT%d, label %%AndF%d\n", cnd, id, id);
+         gen("AndT%d: ", id);
+         let rhs = genexpr(f, b.rhs);
+         gen("\tbr label %%AndF%d\n", cnd, id, id);
+         gen("AndF%d: ", id);
+         gen("\t%v = phi %t [ %v, %%AndEntry%d ], [ %v, %%AndT%d ]\n", res, ex.ty, lhs, id, rhs, id);
+         return res;
    
       case else
          assert(#f, "binop? %c", b.op);
@@ -526,9 +557,11 @@ fn genexpr(f *Fn, ex *Expr) Value {
          return tmp;
 
       case :not;
-         let tmp = mktmp(ex.ty);
-         gen("\t%v = xor %t 1, %v\n", tmp, ex.ty, convert(f, ex.ty, un.ex));
-         return tmp;
+         let tmp = mktmp(ty_i1);
+         gen("\t%v = xor i1 1, %v\n", tmp, ex.ty, llvmbool(f, un.ex));
+         let res = mktmp(ex.ty);
+         gen("\t%v = zext i1 %v to %t\n", res, tmp, res.ty);
+         return res;
 
       case :preinc, :predec;
          let one = Value{ex.ty, :IImm(un.op == :preinc ? 1 : -1)};