Step 1 of 2: conditional passes.

Rationale:
The change adds a return value to Run() in preparation of
conditional pass execution. The value returned by Run() is
best effort, returning false means no optimizations were
applied or no useful information was obtained. I filled
in a few cases with more exact information, others
still just return true. In addition, it integrates inlining
as a regular pass, avoiding the ugly "break" into
optimizations1 and optimziations2.

Bug: b/78171933, b/74026074

Test: test-art-host,target
Change-Id: Ia39c5c83c01dcd79841e4b623917d61c754cf075

1 files changed, 2 insertions, 1 deletions

diff --git a/compiler/optimizing/constant_folding.cc b/compiler/optimizing/constant_folding.cc
index 6f11e628ee..bb78c2357e 100644
--- a/compiler/optimizing/constant_folding.cc
+++ b/compiler/optimizing/constant_folding.cc
@@ -68,13 +68,14 @@ class InstructionWithAbsorbingInputSimplifier : public HGraphVisitor {
 };
 
 
-void HConstantFolding::Run() {
+bool HConstantFolding::Run() {
   HConstantFoldingVisitor visitor(graph_);
   // Process basic blocks in reverse post-order in the dominator tree,
   // so that an instruction turned into a constant, used as input of
   // another instruction, may possibly be used to turn that second
   // instruction into a constant as well.
   visitor.VisitReversePostOrder();
+  return true;
 }