Revert "Revert "Iterative move coalescing for gc regalloc""
This reverts commit 6f61ee5623a676ce983ccfa1aba9b2ae1237e163,
and fixes the arena allocator issues in the original CL.
Functionality from the original CL has not changed.
Test: m valgrind-test-art-host-gtest-register_allocator_test
Test: ART_TEST_OPTIMIZING_GRAPH_COLOR=true m test-art-host-run-test
Change-Id: Idd979f4e03f0c2800e0c07a0a7d392c8a4230aab
diff --git a/compiler/optimizing/ssa_liveness_analysis.h b/compiler/optimizing/ssa_liveness_analysis.h
index 346753b..92788fe 100644
--- a/compiler/optimizing/ssa_liveness_analysis.h
+++ b/compiler/optimizing/ssa_liveness_analysis.h
@@ -514,7 +514,9 @@
// Whether the interval requires a register rather than a stack location.
// If needed for performance, this could be cached.
- bool RequiresRegister() const { return FirstRegisterUse() != kNoLifetime; }
+ bool RequiresRegister() const {
+ return !HasRegister() && FirstRegisterUse() != kNoLifetime;
+ }
size_t FirstUseAfter(size_t position) const {
if (is_temp_) {