re PR target/84431 (Suboptimal code for masked shifts (x86/x86-64))
PR target/84431 * config/i386/i386.md (*ashl<dwi>3_doubleword_mask): New pattern. (*ashl<dwi>3_doubleword_mask_1): Ditto. (*<shift_insn><dwi>3_doubleword_mask): Ditto. (*<shift_insn><dwi>3_doubleword_mask_1): Ditto. testsuite/ChangeLog: PR target/84431 * gcc.target/i386/pr84431.c: New test. From-SVN: r259739
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gcc/testsuite/gcc.target/i386/pr84431.c
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