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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-12-21 06:57:18 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-12-21 06:57:18 +0000 |
| commit | 39bb8924559d0487fb7cb6d4dc33d6b1e9c41004 (patch) | |
| tree | 9887f91a47e5c46de73b822b210ba630c6b62cf2 /gcc/fold-const.c | |
| parent | a97d8b982793ba5bf1e54a41d9bb110182b8baf8 (diff) | |
| download | gcc-39bb8924559d0487fb7cb6d4dc33d6b1e9c41004.zip gcc-39bb8924559d0487fb7cb6d4dc33d6b1e9c41004.tar.gz gcc-39bb8924559d0487fb7cb6d4dc33d6b1e9c41004.tar.bz2 | |
poly_int: get_bit_range
This patch makes get_bit_range return the range and position as poly_ints.
2017-12-21 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* expr.h (get_bit_range): Return the bitstart and bitend as
poly_uint64s rather than unsigned HOST_WIDE_INTs. Return the bitpos
as a poly_int64 rather than a HOST_WIDE_INT.
* expr.c (get_bit_range): Likewise.
(expand_assignment): Update call accordingly.
* fold-const.c (optimize_bit_field_compare): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r255912
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 75bc762..0b3cba5 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -4076,12 +4076,13 @@ optimize_bit_field_compare (location_t loc, enum tree_code code, } /* Honor the C++ memory model and mimic what RTL expansion does. */ - unsigned HOST_WIDE_INT bitstart = 0; - unsigned HOST_WIDE_INT bitend = 0; + poly_uint64 bitstart = 0; + poly_uint64 bitend = 0; if (TREE_CODE (lhs) == COMPONENT_REF) { - get_bit_range (&bitstart, &bitend, lhs, &lbitpos, &offset); - if (offset != NULL_TREE) + poly_int64 plbitpos; + get_bit_range (&bitstart, &bitend, lhs, &plbitpos, &offset); + if (!plbitpos.is_constant (&lbitpos) || offset != NULL_TREE) return 0; } |