From e2bdde18d9758efdc6a0d7d106aad56995df1271 Mon Sep 17 00:00:00 2001 From: Ulf Hermann Date: Wed, 15 Mar 2023 08:59:43 +0100 Subject: [PATCH] JIT: Add missing {STORE|LOAD}_ACC() to CreateCallContext We cannot assume anything about the accumulator register after calling PushCallContext::call(). Also add a note about not needing to re-load the accumulator on ThrowException. Pick-to: 6.5 6.2 5.15 Fixes: QTBUG-111935 Change-Id: I7196585e1d2697c215f4fe87d8d7ac9b98b622a3 --- src/qml/jit/qv4baselinejit.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/qml/jit/qv4baselinejit.cpp b/src/qml/jit/qv4baselinejit.cpp index 14e183adb8..1d65169dce 100644 --- a/src/qml/jit/qv4baselinejit.cpp +++ b/src/qml/jit/qv4baselinejit.cpp @@ -506,6 +506,8 @@ void BaselineJIT::generate_ThrowException() as->passEngineAsArg(0); BASELINEJIT_GENERATE_RUNTIME_CALL(ThrowException, CallResultDestination::Ignore); as->gotoCatchException(); + + // LOAD_ACC(); <- not needed here since it would be unreachable. } void BaselineJIT::generate_GetException() { as->getException(); } @@ -513,9 +515,11 @@ void BaselineJIT::generate_SetException() { as->setException(); } void BaselineJIT::generate_CreateCallContext() { + STORE_ACC(); as->prepareCallWithArgCount(1); as->passCppFrameAsArg(0); BASELINEJIT_GENERATE_RUNTIME_CALL(PushCallContext, CallResultDestination::Ignore); + LOAD_ACC(); } void BaselineJIT::generate_PushCatchContext(int index, int name) { as->pushCatchContext(index, name); } -- 2.39.2