Changeset 65982 in vbox

Timestamp:

Mar 7, 2017 1:29:51 PM (8 years ago)

Author:

vboxsync

Message:

PGMInline.h: a couple of more 32-bit shift optimizations.

File:

• trunk/src/VBox/VMM/include/PGMInline.h (modified) (3 diffs)

trunk/src/VBox/VMM/include/PGMInline.h

@@ -1008 +1008 @@
 DECLINLINE(X86PDE) pgmShwGet32BitPDE(PVMCPU pVCpu, RTGCPTR GCPtr)
 {
-    const unsigned iPd = (GCPtr >> X86_PD_SHIFT) & X86_PD_MASK;
-
     PX86PD pShwPde = pgmShwGet32BitPDPtr(pVCpu);
     if (!pShwPde)
@@ -1016 +1014 @@
         return ZeroPde;
     }
-    return pShwPde->a[iPd];
+    return pShwPde->a[(uint32_t)GCPtr >> X86_PD_SHIFT];
 }
 
@@ -1030 +1028 @@
 DECLINLINE(PX86PDE) pgmShwGet32BitPDEPtr(PVMCPU pVCpu, RTGCPTR GCPtr)
 {
-    const unsigned iPd = (GCPtr >> X86_PD_SHIFT) & X86_PD_MASK;
-
     PX86PD pPde = pgmShwGet32BitPDPtr(pVCpu);
     AssertReturn(pPde, NULL);
-    return &pPde->a[iPd];
+    return &pPde->a[(uint32_t)GCPtr >> X86_PD_SHIFT];
 }