[Bug target/69231] rtx_cost of subreg is bad for <= wordmode integral subregs of > wordmode integral pseudos

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69231
Bug 69231 depends on bug 67462, which changed state.

Bug 67462 Summary: [6 Regression] FAIL: gcc.dg/ifcvt-3.c scan-rtl-dump ce1 "3 true changes made"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67462

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED