Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/connode.cpp
src/share/vm/opto/connode.cpp
- changeset 1040
- 98cb887364d3
- parent 803
- 36ccc817fca4
- child 1077
- 660978a2a31a
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| 1039:ec59443af135 | 1040:98cb887364d3 |
|---|---|
| 69 | 69 |
| 70 (2) Plug the control edge from 1 of the 2 oops in. Apparent problem here is | 70 (2) Plug the control edge from 1 of the 2 oops in. Apparent problem here is |
| 71 to figure out which test post-dominates. The real problem is that it doesn't | 71 to figure out which test post-dominates. The real problem is that it doesn't |
| 72 matter which one you pick. After you pick up, the dominating-test elider in | 72 matter which one you pick. After you pick up, the dominating-test elider in |
| 73 IGVN can remove the test and allow you to hoist up to the dominating test on | 73 IGVN can remove the test and allow you to hoist up to the dominating test on |
| 74 the choosen oop bypassing the test on the not-choosen oop. Seen in testing. | 74 the chosen oop bypassing the test on the not-chosen oop. Seen in testing. |
| 75 Oops. | 75 Oops. |
| 76 | 76 |
| 77 (3) Leave the CastPP's in. This makes the graph more accurate in some sense; | 77 (3) Leave the CastPP's in. This makes the graph more accurate in some sense; |
| 78 we get to keep around the knowledge that an oop is not-null after some test. | 78 we get to keep around the knowledge that an oop is not-null after some test. |
| 79 Alas, the CastPP's interfere with GVN (some values are the regular oop, some | 79 Alas, the CastPP's interfere with GVN (some values are the regular oop, some |
