[turbofan] Keep typer until after load elimination

This CL extends the lifetime of the typer in the pipeline until after
load elimination. This is a two-line CL to make it easy to revert if
we missed necessary brokerization.

If the CL sticks, we can remove some SetType calls in optimizations.

Change-Id: I4f27bfcada5221b2bae81297cd6b606881a7ccb8
Reviewed-on: https://chromium-review.googlesource.com/c/1341952
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57629}

src/compiler/pipeline.cc

@@ -1933,7 +1933,6 @@ bool PipelineImpl::OptimizeGraph(Linkage* linkage) {
   RunPrintAndVerify(TyperPhase::phase_name());
   Run<TypedLoweringPhase>();
   RunPrintAndVerify(TypedLoweringPhase::phase_name());
-  data->DeleteTyper();
 
   if (data->info()->is_loop_peeling_enabled()) {
     Run<LoopPeelingPhase>();
@@ -1947,6 +1946,7 @@ bool PipelineImpl::OptimizeGraph(Linkage* linkage) {
     Run<LoadEliminationPhase>();
     RunPrintAndVerify(LoadEliminationPhase::phase_name());
   }
+  data->DeleteTyper();
 
   if (FLAG_turbo_escape) {
     Run<EscapeAnalysisPhase>();