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X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR07MB3467 X-SW-Source: 2017-07/txt/msg00042.txt.bz2 On Tue, 2017-07-25 at 15:13 -0700, Andrew Pinski wrote: >  > function.c: > /* Return true if we should assign DECL a pseudo register; false if it >    should live on the local stack.  */ > > bool > use_register_for_decl (const_tree decl) > { > Yes, I just tried tweaking that function to return false when not optimizing, even if the decl has DECL_REGISTER set.  If fixed gdb.base/store.exp but not much else.  The other things that did not fail after the change were: FAIL: gdb.base/step-over-syscall.exp: clone: displaced=off: single step over clone FAIL: gdb.base/watchpoint.exp: next over global_ptr_ptr buffer set FAIL: gdb.base/watchpoint.exp: next over global_ptr_ptr init FAIL: gdb.base/watchpoint.exp: next over global_ptr_ptr pointer advance And I don't actually see why those would change behaviour, I didn't see any register variables in those tests  I could submit a patch to GCC with this change but it seems like a rather large hammer to use on a few fixes.  Maybe changing gdb.base/store.exp to not use register variables would be a reasonable fix.  Originally, I thought that was a bad idea because I thought the problem affected more tests, now I am not so sure. Steve Ellcey sellcey@cavium.com