diff options
| author | Eric Botcazou <ebotcazou@adacore.com> | 2019-09-20 09:42:40 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2019-09-20 09:42:40 +0000 |
| commit | 9ba4312712a96eba938c9d280e57f71929cdef41 (patch) | |
| tree | 6204d8828d33e6b5d14284045d4b2ba91cd1d8fd /gcc/config/sparc/sparc.h | |
| parent | 522da4c233cb626f66e413dabb86a0a78adaafce (diff) | |
| download | gcc-9ba4312712a96eba938c9d280e57f71929cdef41.tar.gz | |
re PR target/91269 (unaligned floating-point register with -mcpu=niagara4 -fcall-used-g6)
PR target/91269
* config/sparc/sparc.h (HARD_REGNO_CALLER_SAVE_MODE): Define.
From-SVN: r275994
Diffstat (limited to 'gcc/config/sparc/sparc.h')
| -rw-r--r-- | gcc/config/sparc/sparc.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h index defcba8ecd7..d14741846f5 100644 --- a/gcc/config/sparc/sparc.h +++ b/gcc/config/sparc/sparc.h @@ -711,6 +711,13 @@ along with GCC; see the file COPYING3. If not see register window instruction in the prologue. */ #define HARD_REGNO_RENAME_OK(FROM, TO) ((FROM) != 1) +/* Select a register mode required for caller save of hard regno REGNO. + Contrary to what is documented, the default is not the smallest suitable + mode but the largest suitable mode for the given (REGNO, NREGS) pair and + it quickly creates paradoxical subregs that can be problematic. */ +#define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ + ((MODE) == VOIDmode ? choose_hard_reg_mode (REGNO, NREGS, false) : (MODE)) + /* Specify the registers used for certain standard purposes. The values of these macros are register numbers. */ |