Re: bug in DSE?

2021-02-13 Thread Richard Biener via Gcc
On February 13, 2021 12:20:48 AM GMT+01:00, Marc Glisse wrote: >On Fri, 12 Feb 2021, Andrew MacLeod via Gcc wrote: > >> I dont't want to immediately open a PR,  so I'll just ask about >> testsuite/gcc.dg/pr83609.c. >> >> the compilation string  is >>   -O2 -fno-tree-forwprop -fno-tree-ccp

Re: bug in DSE?

2021-02-12 Thread Marc Glisse
On Fri, 12 Feb 2021, Andrew MacLeod via Gcc wrote: I dont't want to immediately open a PR,  so I'll just ask about testsuite/gcc.dg/pr83609.c. the compilation string  is   -O2 -fno-tree-forwprop -fno-tree-ccp -fno-tree-fre -fno-tree-pre -fno-code-hoisting Which passes as is. if I however

bug in DSE?

2021-02-12 Thread Andrew MacLeod via Gcc
I dont't want to immediately open a PR,  so I'll just ask about testsuite/gcc.dg/pr83609.c. the compilation string  is   -O2 -fno-tree-forwprop -fno-tree-ccp -fno-tree-fre -fno-tree-pre -fno-code-hoisting Which passes as is. if I however add   -fno-tree-vrp   as well, then it looks like