Consider all users when determining only-used-in-block.

Bug: 175332495
Bug: 178458926
Change-Id: I9642ed4a0a744f17e14337d6c997b8c8d932b770

src/main/java/com/android/tools/r8/ir/code/Value.java

diff --git a/src/main/java/com/android/tools/r8/ir/code/Value.java b/src/main/java/com/android/tools/r8/ir/code/Value.java
index 0f0d6e9..050dbe1 100644
--- a/src/main/java/com/android/tools/r8/ir/code/Value.java
+++ b/src/main/java/com/android/tools/r8/ir/code/Value.java
@@ -328,8 +328,11 @@
   }
 
   public boolean onlyUsedInBlock(BasicBlock block) {
-    for (Instruction user : uniqueUsers()) {
-      if (user.getBlock() != block) {
+    if (hasPhiUsers() || hasDebugUsers()) {
+      return false;
+    }
+    for (Phi phiUser : uniquePhiUsers()) {
+      if (phiUser.getBlock() != block) {
         return false;
       }
     }