--- a/js/src/methodjit/Compiler.cpp
+++ b/js/src/methodjit/Compiler.cpp
@@ -932,17 +932,17 @@ MakeJITScript(JSContext *cx, HandleScrip
         CrossChunkEdge &edge = jitEdges[i];
         edge.shimLabel = shimCode + (size_t) edge.shimLabel;
     }
 
     return jit;
 }
 
 static inline bool
-IonGetsFirstChance(JSContext *cx, JSScript *script, jsbytecode *pc, CompileRequest request)
+IonGetsFirstChance(JSContext *cx, JSScript *script, CompileRequest request)
 {
 #ifdef JS_ION
     if (!ion::IsEnabled(cx))
         return false;
 
     // If the script is not hot, use JM. recompileCheckHelper will insert a check
     // to trigger a recompile when the script becomes hot.
     if (script->getUseCount() < ion::js_IonOptions.usesBeforeCompile)
@@ -955,21 +955,16 @@ IonGetsFirstChance(JSContext *cx, JSScri
     // If there's no way this script is going to be Ion compiled, let JM take over.
     if (!script->canIonCompile())
         return false;
 
     // If we cannot enter Ion because bailouts are expected, let JM take over.
     if (script->hasIonScript() && script->ion->bailoutExpected())
         return false;
 
-    // If we cannot enter Ion because it was compiled for OSR at a different PC,
-    // let JM take over until the PC is reached.
-    if (script->hasIonScript() && pc && script->ionScript()->osrPc() != pc)
-        return false;
-
     // If ion compilation is pending or in progress on another thread, continue
     // using JM until that compilation finishes.
     if (script->ion == ION_COMPILING_SCRIPT)
         return false;
 
     return true;
 #endif
     return false;
@@ -998,17 +993,17 @@ mjit::CanMethodJIT(JSContext *cx, Handle
      * good to go. If, however, the two are different, then we cannot emit JIT
      * code because the instrumentation will be wrong one way or another.
      */
     if (frame->script() == script && pc != script->code) {
         if (frame->hasPushedSPSFrame() != cx->runtime->spsProfiler.enabled())
             return Compile_Skipped;
     }
 
-    if (IonGetsFirstChance(cx, script, pc, request))
+    if (IonGetsFirstChance(cx, script, request))
         return Compile_Skipped;
 
     if (script->hasMJITInfo()) {
         JSScript::JITScriptHandle *jith = script->jitHandle(construct, cx->compartment->compileBarriers());
         if (jith->isUnjittable())
             return Compile_Abort;
     }