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from 9242a89d088 x86: Swap %edx/%rdx with %eax/%rax for PR middle-end/122122 new decd4277e97 phiopt/cselim: Improve cselim-limited to commonalize all st [...] new d3e963d1ccc match: Extend `-(a ptrdiff b)` pattern by allowing a nop co [...]

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Summary of changes: gcc/match.pd | 7 +-- gcc/testsuite/g++.dg/opt/pr122083-1.C | 50 +++++++++++++++++++ gcc/testsuite/gcc.dg/{pr58742-1.c => pr121921-1.c} | 7 ++- .../gcc.dg/tree-ssa/{ssa-pre-19.c => cselim-1.c} | 6 +-- .../gcc.dg/tree-ssa/{ssa-pre-19.c => cselim-2.c} | 6 +-- gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-19.c | 3 +- gcc/tree-ssa-phiopt.cc | 58 +++++++++++----------- 7 files changed, 95 insertions(+), 42 deletions(-) create mode 100644 gcc/testsuite/g++.dg/opt/pr122083-1.C copy gcc/testsuite/gcc.dg/{pr58742-1.c => pr121921-1.c} (74%) copy gcc/testsuite/gcc.dg/tree-ssa/{ssa-pre-19.c => cselim-1.c} (72%) copy gcc/testsuite/gcc.dg/tree-ssa/{ssa-pre-19.c => cselim-2.c} (70%)