fold-const.c
447 KB
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Add tree_fits_uhwi_p tests to BIT_FIELD_REF folder · 1de10735
The first BIT_FIELD_REF folding pattern assumed without checking that operands satisfy tree_fits_uhwi_p. The second pattern does check this: /* On constants we can use native encode/interpret to constant fold (nearly) all BIT_FIELD_REFs. */ if (CONSTANT_CLASS_P (arg0) && can_native_interpret_type_p (type) && BITS_PER_UNIT == 8 && tree_fits_uhwi_p (op1) && tree_fits_uhwi_p (op2)) so this patch adds the checks to the first pattern too. This is needed for POLY_INT_CST bit positions. 2018-01-04 Richard Sandiford <richard.sandiford@linaro.org> gcc/ * fold-const.c (fold_ternary_loc): Check tree_fits_uhwi_p before using tree_to_uhwi. From-SVN: r256258
Richard Sandiford committed