re PR target/52883 (ICE in simplify_const_unary_operation, at simplify-rtx.c:1464)
PR target/52883 * config/i386/predicates.md (x86_64_zext_general_operand): Prevent VOIDmode immediate operands. * config/i386/constraints.md (Wz): New constraint. * config/i386/i386.md (*zero_extendsidi2_rex64): Use Wz instead of Z. testsuite/ChangeLog: PR target/52883 * gcc.target/i386/pr52883.c: New testcase. From-SVN: r186243
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gcc/testsuite/gcc.target/i386/pr52883.c
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