diff options
| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-10-23 06:07:26 +0000 |
|---|---|---|
| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-10-23 06:07:26 +0000 |
| commit | 30a86effd19f766507bcf82a70ce07f75513100c (patch) | |
| tree | 4f86a2e953095b545d73efdd1a8123a03a35c9ab | |
| parent | ee3a0978a5b76a0c303dc85259afd951c559f6d8 (diff) | |
| download | gcc-30a86effd19f766507bcf82a70ce07f75513100c.tar.gz | |
Fix HWI + -unsigned in combine.c
rtx_equal_for_field_assignment_p had:
x = adjust_address_nv (x, GET_MODE (y),
-subreg_lowpart_offset (GET_MODE (x),
GET_MODE (y)));
But subreg_lowpart_offset returns an unsigned int and
adjust_address_nv takes a HWI, so a subreg offset of 4 would
give a memory offset of 0x00000000fffffffffc.
2017-10-23 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* combine.c (rtx_equal_for_field_assignment_p): Use
byte_lowpart_offset.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@253997 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 10 |
2 files changed, 8 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1bc0f001cc2..6caddb801b7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2017-10-23 Richard Sandiford <richard.sandiford@linaro.org> + + * combine.c (rtx_equal_for_field_assignment_p): Use + byte_lowpart_offset. + 2017-10-22 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> diff --git a/gcc/combine.c b/gcc/combine.c index e5c276901d8..d71e50fdefb 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -9526,13 +9526,9 @@ rtx_equal_for_field_assignment_p (rtx x, rtx y, bool widen_x) return 0; if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN) return 0; - /* For big endian, adjust the memory offset. */ - if (BYTES_BIG_ENDIAN) - x = adjust_address_nv (x, GET_MODE (y), - -subreg_lowpart_offset (GET_MODE (x), - GET_MODE (y))); - else - x = adjust_address_nv (x, GET_MODE (y), 0); + x = adjust_address_nv (x, GET_MODE (y), + byte_lowpart_offset (GET_MODE (y), + GET_MODE (x))); } if (x == y || rtx_equal_p (x, y)) |