Be less aggressive when inlining.

Reduce the threshold for cumulated dex registers, to prevent
long and memory expensive compiles.

bug: 62243120 (3d party app startup)
bug: 36727951 (Camera startup)
bug: 62271612 (compiler allocations)
Test: test.py
Change-Id: I8fd5cd7aed3c4e677f0aa15af676b959cc6ddac2
diff --git a/compiler/optimizing/inliner.cc b/compiler/optimizing/inliner.cc
index 9be6a51..142c957 100644
--- a/compiler/optimizing/inliner.cc
+++ b/compiler/optimizing/inliner.cc
@@ -56,7 +56,7 @@
 
 // Limit the number of dex registers that we accumulate while inlining
 // to avoid creating large amount of nested environments.
-static constexpr size_t kMaximumNumberOfCumulatedDexRegisters = 64;
+static constexpr size_t kMaximumNumberOfCumulatedDexRegisters = 32;
 
 // Limit recursive call inlining, which do not benefit from too
 // much inlining compared to code locality.