Changeset 103888 in vbox for trunk/src/VBox/VMM/VMMAll/target-x86

Timestamp:

Mar 18, 2024 11:36:21 AM (11 months ago)

Author:

vboxsync

Message:

VMM/IEM: Enabled wholesale EFLAGS skipping in iemNativeEmitEFlagsForArithmetic as well. bugref:10375

File:

• trunk/src/VBox/VMM/VMMAll/target-x86/IEMAllN8veEmit-x86.h (modified) (2 diffs)

trunk/src/VBox/VMM/VMMAll/target-x86/IEMAllN8veEmit-x86.h

@@ -208 +208 @@
 {
 #ifdef IEMNATIVE_WITH_EFLAGS_SKIPPING
-    /** @todo */
+    /*
+     * See if we can skip this wholesale.
+     */
+    PCIEMLIVENESSENTRY const pLivenessEntry = &pReNative->paLivenessEntries[pReNative->idxCurCall];
+    if (IEMLIVENESS_STATE_ARE_STATUS_EFL_TO_BE_CLOBBERED(pLivenessEntry))
+    {
+        STAM_COUNTER_INC(&pReNative->pVCpu->iem.s.StatNativeEflSkippedLogical);
+# ifdef IEMNATIVE_STRICT_EFLAGS_SKIPPING
+        off = iemNativeEmitOrImmIntoVCpuU32(pReNative, off, X86_EFL_STATUS_BITS, RT_UOFFSETOF(VMCPU, iem.s.fSkippingEFlags));
+# endif
+    }
+    else
 #endif
     {
@@ -305 +316 @@
     if (IEMLIVENESS_STATE_ARE_STATUS_EFL_TO_BE_CLOBBERED(pLivenessEntry))
     {
-        STAM_COUNTER_INC(&pReNative->pVCpu->iem.s.StatNativeEflArithmeticSkipped);
+        STAM_COUNTER_INC(&pReNative->pVCpu->iem.s.StatNativeEflSkippedArithmetic);
 # ifdef IEMNATIVE_STRICT_EFLAGS_SKIPPING
         off = iemNativeEmitOrImmIntoVCpuU32(pReNative, off, X86_EFL_STATUS_BITS, RT_UOFFSETOF(VMCPU, iem.s.fSkippingEFlags));