webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 18 insertions, 9 deletions

diff --git a/Source/JavaScriptCore/jit/TempRegisterSet.h b/Source/JavaScriptCore/jit/TempRegisterSet.h
index 0915e796a..9983229ef 100644
--- a/Source/JavaScriptCore/jit/TempRegisterSet.h
+++ b/Source/JavaScriptCore/jit/TempRegisterSet.h
@@ -23,10 +23,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
-#ifndef TempRegisterSet_h
-#define TempRegisterSet_h
-
-#include <wtf/Platform.h>
+#pragma once
 
 #if ENABLE(JIT)
 
@@ -41,8 +38,7 @@ class TempRegisterSet {
 public:
     TempRegisterSet()
     {
-        for (unsigned i = numberOfBytesInTempRegisterSet; i--;)
-            m_set[i] = 0;
+        clearAll();
     }
     
     TempRegisterSet(const RegisterSet&);
@@ -118,6 +114,16 @@ public:
         return getBit(GPRInfo::numberOfRegisters + index);
     }
     
+    // Return the index'th free FPR.
+    FPRReg getFreeFPR(unsigned index = 0) const
+    {
+        for (unsigned i = FPRInfo::numberOfRegisters; i--;) {
+            if (!getFPRByIndex(i) && !index--)
+                return FPRInfo::toRegister(i);
+        }
+        return InvalidFPRReg;
+    }
+
     template<typename BankInfo>
     void setByIndex(unsigned index)
     {
@@ -164,6 +170,12 @@ public:
     }
     
 private:
+    void clearAll()
+    {
+        for (unsigned i = numberOfBytesInTempRegisterSet; i--;)
+            m_set[i] = 0;
+    }
+
     void setBit(unsigned i)
     {
         ASSERT(i < totalNumberOfRegisters);
@@ -205,6 +217,3 @@ struct TempRegisterSet { };
 } // namespace JSC
 
 #endif // ENABLE(JIT)
-
-#endif // TempRegisterSet_h
-