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-rw-r--r--benchmark/vm_ivar_memoize.yml85
1 files changed, 85 insertions, 0 deletions
diff --git a/benchmark/vm_ivar_memoize.yml b/benchmark/vm_ivar_memoize.yml
new file mode 100644
index 0000000000..90f6b07f05
--- /dev/null
+++ b/benchmark/vm_ivar_memoize.yml
@@ -0,0 +1,85 @@
+prelude: |
+ IVARS = 60
+ class Record
+ def initialize(offset = false)
+ @offset = 1 if offset
+ @first = 0
+ IVARS.times do |i|
+ instance_variable_set("@ivar_#{i}", i)
+ end
+ end
+
+ def first
+ @first
+ end
+
+ def lazy_set
+ @lazy_set ||= 123
+ end
+
+ def undef
+ @undef
+ end
+ end
+
+ Record.new # Need one alloc to right size
+
+ BASE = Record.new
+ LAZY = Record.new
+ LAZY.lazy_set
+
+ class Miss < Record
+ @first = 0
+ IVARS.times do |i|
+ instance_variable_set("@i_#{i}", i)
+ end
+ end
+
+ Miss.new # Need one alloc to right size
+ MISS = Miss.new
+
+ DIVERGENT = Record.new(true)
+
+benchmark:
+ vm_ivar_stable_shape: |
+ BASE.first
+ BASE.first
+ BASE.first
+ BASE.first
+ BASE.first
+ BASE.first
+ vm_ivar_memoize_unstable_shape: |
+ BASE.first
+ LAZY.first
+ BASE.first
+ LAZY.first
+ BASE.first
+ LAZY.first
+ vm_ivar_memoize_unstable_shape_miss: |
+ BASE.first
+ MISS.first
+ BASE.first
+ MISS.first
+ BASE.first
+ MISS.first
+ vm_ivar_unstable_undef: |
+ BASE.undef
+ LAZY.undef
+ BASE.undef
+ LAZY.undef
+ BASE.undef
+ LAZY.undef
+ vm_ivar_divergent_shape: |
+ BASE.first
+ DIVERGENT.first
+ BASE.first
+ DIVERGENT.first
+ BASE.first
+ DIVERGENT.first
+ vm_ivar_divergent_shape_imbalanced: |
+ BASE.first
+ DIVERGENT.first
+ DIVERGENT.first
+ DIVERGENT.first
+ DIVERGENT.first
+ DIVERGENT.first