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from 37aa98f79a7 libbacktrace: fix syntax of Windows registration functions new 2b3533cd871 gimple ssa: Teach switch conversion to optimize powers of 2 [...]

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Summary of changes: gcc/testsuite/gcc.dg/tree-ssa/switch-3.c | 2 +- .../gcc.target/i386/switch-exp-transform-1.c | 32 ++ .../gcc.target/i386/switch-exp-transform-2.c | 35 +++ .../gcc.target/i386/switch-exp-transform-3.c | 148 ++++++++++ gcc/tree-switch-conversion.cc | 326 ++++++++++++++++++++- gcc/tree-switch-conversion.h | 18 ++ 6 files changed, 555 insertions(+), 6 deletions(-) create mode 100644 gcc/testsuite/gcc.target/i386/switch-exp-transform-1.c create mode 100644 gcc/testsuite/gcc.target/i386/switch-exp-transform-2.c create mode 100644 gcc/testsuite/gcc.target/i386/switch-exp-transform-3.c