| commit | 57689c1061f64df41b20db8975a93bcbd9653fd8 | |
| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Mon, 4 Sep 2017 10:48:40 +0000 (4 10:48 +0000) | ||
| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Mon, 4 Sep 2017 10:48:40 +0000 (4 10:48 +0000) | ||
| tree | 6c37f118811f8cff123ef56870a20145fd74b472 | treesnapshot (tar.gz zip) |
| parent | 31d7a9b35fef974dad13881df6d319b7b08600e8 | commitdiff |
Add subreg_memory_offset helper functions
This patch adds routines for converting a SUBREG_BYTE offset into a
memory address offset. The two only differ for paradoxical subregs,
where SUBREG_BYTE is always 0 but the memory address offset can be
negative.
2017-09-04 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* rtl.h (subreg_memory_offset): Declare.
* emit-rtl.c (subreg_memory_offset): New function.
* expmed.c (store_bit_field_1): Use it.
* expr.c (undefined_operand_subword_p): Likewise.
* simplify-rtx.c (simplify_subreg): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251644 138bc75d-0d04-0410-961f-82ee72b054a4
This patch adds routines for converting a SUBREG_BYTE offset into a
memory address offset. The two only differ for paradoxical subregs,
where SUBREG_BYTE is always 0 but the memory address offset can be
negative.
2017-09-04 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* rtl.h (subreg_memory_offset): Declare.
* emit-rtl.c (subreg_memory_offset): New function.
* expmed.c (store_bit_field_1): Use it.
* expr.c (undefined_operand_subword_p): Likewise.
* simplify-rtx.c (simplify_subreg): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251644 138bc75d-0d04-0410-961f-82ee72b054a4