commit 706ffd9e7d6d49d6ec2d0a633df6897e9b009ed2
author Nicolas Geoffray <ngeoffray@google.com> Mon Jul 28 20:36:28 2025 +0100
committer Nicolas Geoffray <ngeoffray@google.com> Tue Jul 29 02:58:51 2025 -0700
tree 28874118806b0b785c1e7c7af589edaac4280101
parent f4897970f18566057ad02a68a2e6382b739107a1

Fast compiler: support moving an int32 constant in an int64 register.

Shift operations on longs take an int for the shift value, and handling
it this way simplifies the implementation.

Test: test.py
Flag: com.android.art.flags.fast_baseline_compiler
Change-Id: I3673bc55c4d4eace71804b944ce7af6bdd252a62

compiler/optimizing/fast_compiler_arm64.cc

diff --git a/compiler/optimizing/fast_compiler_arm64.cc b/compiler/optimizing/fast_compiler_arm64.cc
index adee867..4866a4d 100644
--- a/compiler/optimizing/fast_compiler_arm64.cc
+++ b/compiler/optimizing/fast_compiler_arm64.cc
@@ -610,7 +610,7 @@
     }
     if (source.IsConstant()) {
       if (source.GetConstant()->IsIntConstant()) {
-        DCHECK_NE(dst_type, DataType::Type::kInt64);
+        // Note: the destination may be 64bits, but that's ok.
         __ Mov(dst, source.GetConstant()->AsIntConstant()->GetValue());
         return true;
       } else if (source.GetConstant()->IsLongConstant()) {