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from 1fbdc7a gcc/ new 889f6db [AArch64] Simplify ashl<mode>3 expander for SHORT modes new a603163 combine: Take known zero bits into account when checking extraction.
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Summary of changes: gcc/ChangeLog | 11 ++++++++ gcc/combine.c | 28 +++++++++++++++++++ gcc/config/aarch64/aarch64.md | 18 +++++-------- gcc/testsuite/ChangeLog | 5 ++++ gcc/testsuite/gcc.dg/zero_bits_compound-1.c | 42 +++++++++++++++++++++++++++++ gcc/testsuite/gcc.dg/zero_bits_compound-2.c | 39 +++++++++++++++++++++++++++ 6 files changed, 131 insertions(+), 12 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/zero_bits_compound-1.c create mode 100644 gcc/testsuite/gcc.dg/zero_bits_compound-2.c