Restrict the use of ConstantFolding's VisitIf

It was taking a lot of time for the improvement it got. We can get
99.99% of the improvement, with only one VisitIf call. This is
roughly 20% of the compile time it used to take.

Bug: 278626992
Fixes: 278626992
Test: art/test/testrunner/testrunner.py --host --64 --optimizing -b
Change-Id: Icc00c9ad6a9eb4f4fd18677bcb65655cbbe9d027

1 files changed, 3 insertions, 1 deletions

diff --git a/compiler/optimizing/constant_folding_test.cc b/compiler/optimizing/constant_folding_test.cc
index 9acfa35326..741fd3f822 100644
--- a/compiler/optimizing/constant_folding_test.cc
+++ b/compiler/optimizing/constant_folding_test.cc
@@ -60,7 +60,9 @@ class ConstantFoldingTest : public CommonCompilerTest, public OptimizingUnitTest
     std::string actual_before = printer_before.str();
     EXPECT_EQ(expected_before, actual_before);
 
-    HConstantFolding(graph_, /* stats= */ nullptr, "constant_folding").Run();
+    HConstantFolding constant_folding(
+        graph_, /* stats= */ nullptr, "constant_folding", /* use_all_optimizations= */ true);
+    constant_folding.Run();
     GraphChecker graph_checker_cf(graph_);
     graph_checker_cf.Run();
     ASSERT_TRUE(graph_checker_cf.IsValid());