gcc/testsuite/gcc.dg/pr68435.c

   1 /* { dg-do compile { target aarch64*-*-* i?86-*-* x86_64-*-* } } */
   2 /* { dg-options "-fdump-rtl-ce1 -O2 -w --param max-rtl-if-conversion-unpredictable-cost=100" } */
   3 /* { dg-additional-options "-march=i686" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
   4
   5 typedef struct cpp_reader cpp_reader;
   6 enum cpp_ttype
   7 {
   8   CPP_EQ =
   9     0, CPP_NOT, CPP_GREATER, CPP_LESS, CPP_PLUS, CPP_MINUS, CPP_MULT, CPP_DIV,
  10   CPP_MOD, CPP_AND, CPP_OR, CPP_XOR, CPP_RSHIFT, CPP_LSHIFT, CPP_MIN,
  11   CPP_MAX, CPP_COMPL, CPP_AND_AND, CPP_OR_OR, CPP_QUERY, CPP_COLON,
  12   CPP_COMMA, CPP_OPEN_PAREN, CPP_CLOSE_PAREN, CPP_EQ_EQ, CPP_NOT_EQ,
  13   CPP_GREATER_EQ, CPP_LESS_EQ, CPP_PLUS_EQ, CPP_MINUS_EQ, CPP_MULT_EQ,
  14   CPP_DIV_EQ, CPP_MOD_EQ, CPP_AND_EQ, CPP_OR_EQ, CPP_XOR_EQ, CPP_RSHIFT_EQ,
  15   CPP_LSHIFT_EQ, CPP_MIN_EQ, CPP_MAX_EQ, CPP_HASH, CPP_PASTE,
  16   CPP_OPEN_SQUARE, CPP_CLOSE_SQUARE, CPP_OPEN_BRACE, CPP_CLOSE_BRACE,
  17   CPP_SEMICOLON, CPP_ELLIPSIS, CPP_PLUS_PLUS, CPP_MINUS_MINUS, CPP_DEREF,
  18   CPP_DOT, CPP_SCOPE, CPP_DEREF_STAR, CPP_DOT_STAR, CPP_ATSIGN, CPP_NAME,
  19   CPP_NUMBER, CPP_CHAR, CPP_WCHAR, CPP_OTHER, CPP_STRING, CPP_WSTRING,
  20   CPP_HEADER_NAME, CPP_COMMENT, CPP_MACRO_ARG, CPP_PADDING, CPP_EOF,
  21 };
  22
  23 static struct op lex (cpp_reader *, int);
  24
  25 struct op
  26 {
  27   enum cpp_ttype op;
  28   long value;
  29 };
  30
  31 int
  32 _cpp_parse_expr (pfile)
  33 {
  34   struct op init_stack[20];
  35   struct op *stack = init_stack;
  36   struct op *top = stack + 1;
  37   int skip_evaluation = 0;
  38   for (;;)
  39     {
  40       struct op op;
  41       op = lex (pfile, skip_evaluation);
  42       switch (op.op)
  43         {
  44         case CPP_OR_OR:
  45           if (top->value)
  46             skip_evaluation++;
  47           else
  48             skip_evaluation--;
  49         }
  50     }
  51 }
  52
  53 /* { dg-final { scan-rtl-dump "2 true changes made" "ce1" } } */