| JDK 25 |
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| 25 b16Fixed |
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Attach TestAllocations.java fails with:
Failed IR Rules (1) of Methods (1)
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1) Method "static java.lang.Object compiler.c2.irTests.TestAllocation.test1(java.lang.Object)" - [Failed IR rules: 1]:
* @IR rule 1: "@compiler.lib.ir_framework.IR(phase={DEFAULT}, applyIfCPUFeatureAnd={}, applyIf={}, applyIfCPUFeatureOr={}, applyIfCPUFeature={}, counts={"_#ALLOC#_", "4"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
> Phase "PrintOptoAssembly":
- counts: Graph contains wrong number of nodes:
* Constraint 1: "(.*precise .*\R((.*(?i:mov|mv|xorl|nop|spill).*|\s*)\R)*.*(?i:call,static).*wrapper for: _new_instance_Java)"
- Failed comparison: [found] 3 = 4 [given]
- Matched nodes (3):
* 449 movq RSI, precise compiler/c2/irTests/TestAllocation$MyClass: 0x00007f400c13c9d0:Constant:exact * # ptr
453 xorl RDX, RDX # int
455 movq RBP, [rsp + #0] # spill
nop # 2 bytes pad for loops and calls
45b call,static wrapper for: _new_instance_Java
* 470 movq RSI, precise java/lang/Object: 0x00007f40080039c8:Constant:exact * # ptr
47a xorl RDX, RDX # int
47c movq RBP, [rsp + #0] # spill
nop # 3 bytes pad for loops and calls
483 call,static wrapper for: _new_instance_Java
* 4c5 movq RSI, precise java/util/HashMap: 0x00007f400c13f208 (java/lang/Cloneable,java/io/Serializable,java/util/Map):Constant:exact * # ptr
4cf xorl RDX, RDX # int
nop # 2 bytes pad for loops and calls
4d3 call,static wrapper for: _new_instance_Java
The problem is that the following allocation is not detected by IRNode.ALLOC due to the pushq/popq spills:
495 B36: # out( B42 B37 ) <- in( B7 ) Freq: 0.000100017
495 movq RSI, precise java/util/HashSet: 0x00007f400c13d928 (java/lang/Cloneable,java/io/Serializable,java/lang/Iterable,java/util/Collection,java/util/Set):Constant:exact * # ptr
49f xorl RDX, RDX # int
4a1 movq RBP, [rsp + #0] # spill
4a5 pushq [rsp + #16] # 64-bit mem-mem spill
popq [rsp + #8]
4af call,static wrapper for: _new_instance_Java
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