JDK-7154567 : [TESTBUG] compiler/7052494/Test7052494.java times out when run with C1
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs23
  • Priority: P4
  • Status: Closed
  • Resolution: Duplicate
  • OS: generic
  • CPU: generic
  • Submitted: 2012-03-16
  • Updated: 2019-09-13
  • Resolved: 2014-05-14
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JDK 9
9Resolved
Related Reports
Duplicate :  
JDK-7067288 - compiler regression test Test7052494 timeouts with client VM
Description
The test compiler/7052494/Test7052494.java times out when run with C1. 
However, it passes with C2.
Comments
The test was fixed by 7067288: compiler regression test Test7052494 timeouts with client VM. The code in the description is old before 7067288 fix. 7067288 was fixed in 2011. I don't know why this bug was filed. Please, verify if the problem still exists and close as dup if not.
08-05-2014
ILW=MLH=>P4
08-05-2014
What is this supposed to test? Showing correctness should not need more than one or a few iterations. It would be nice if c1 could remove the loop, but unless it is a regression, the loop removal should be a separate enhancement.
08-05-2014
EVALUATION Test7052494::test5 executes for too long when compiled with C1. C1 doesn't optimize away the loop. Method code looks like: test/compiler/7052494/Test7052494.java: 73 static int test5(int i) { 74 System.out.println("test5"); 75 int result = 0; 76 while (i++ != 0) { 77 result = i*2; 78 } 79 return result; 80 } It is invoked 11k times with i=1: 144 for (int i = 0; i < 11000; i++) { 145 int k = test5(1); 146 if (k != 0) { 147 System.out.println("FAILED: " + k + " != 0"); 148 failed = true; 149 break; 150 } 151 }
16-03-2012