From 60c5bef90f5741312545c1d2e27f9d36577bf37b Mon Sep 17 00:00:00 2001
From: "james.brodman" <james.brodman@intel.com>
Date: Wed, 15 May 2013 16:57:41 -0400
Subject: [PATCH 1/2] Simplify ~mask codegen to emit single XOR like other
 places in the code.

---
 ctx.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/ctx.cpp b/ctx.cpp
index 9f7c3bfb..872751eb 100644
--- a/ctx.cpp
+++ b/ctx.cpp
@@ -553,8 +553,10 @@ FunctionEmitContext::EndIf() {
                                      breakLanes, "|break_lanes");
         }
 
-        llvm::Value *notBreakOrContinue =
-            NotOperator(bcLanes, "!(break|continue)_lanes");
+        llvm::Value *notBreakOrContinue = 
+            BinaryOperator(llvm::Instruction::Xor,
+                           bcLanes, LLVMMaskAllOn,
+                           "!(break|continue)_lanes");
         llvm::Value *oldMask = GetInternalMask();
         llvm::Value *newMask =
             BinaryOperator(llvm::Instruction::And, oldMask,
@@ -659,7 +661,9 @@ FunctionEmitContext::restoreMaskGivenReturns(llvm::Value *oldMask) {
     // newMask = (oldMask & ~returnedLanes)
     llvm::Value *returnedLanes = LoadInst(returnedLanesPtr,
                                           "returned_lanes");
-    llvm::Value *notReturned = NotOperator(returnedLanes, "~returned_lanes");
+    llvm::Value *notReturned = BinaryOperator(llvm::Instruction::Xor,
+                                              returnedLanes, LLVMMaskAllOn,
+                                              "~returned_lanes");
     llvm::Value *newMask = BinaryOperator(llvm::Instruction::And,
                                           oldMask, notReturned, "new_mask");
     SetInternalMask(newMask);

From 9f44e597d68fcd400fd764998c3468572e1c791c Mon Sep 17 00:00:00 2001
From: "james.brodman" <james.brodman@intel.com>
Date: Wed, 15 May 2013 18:15:41 -0400
Subject: [PATCH 2/2] Additional Not -> Xor w/ MaskAllOn

---
 expr.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/expr.cpp b/expr.cpp
index 7ef2c0d0..13dfe4eb 100644
--- a/expr.cpp
+++ b/expr.cpp
@@ -1796,8 +1796,7 @@ lEmitLogicalOp(BinaryExpr::Op op, Expr *arg0, Expr *arg1,
             // For the instances where value0 was true, we need to inhibit
             // execution.
             ctx->SetCurrentBasicBlock(bbEvalValue1);
-            llvm::Value *not0 = ctx->NotOperator(value0);
-            ctx->SetInternalMaskAnd(oldMask, not0);
+            ctx->SetInternalMaskAndNot(oldMask, value0);
 
             llvm::Value *value1 = arg1->GetValue(ctx);
             if (value1 == NULL) {