diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/alias.c | 8 |
2 files changed, 13 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b9b5ddd..209219c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -2,6 +2,13 @@ Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> + * alias.c (find_base_value, find_base_term): Only process integer + truncations. Check the precision rather than the size. + +2017-11-01 Richard Sandiford <richard.sandiford@linaro.org> + Alan Hayward <alan.hayward@arm.com> + David Sherwood <david.sherwood@arm.com> + * machmode.h (is_narrower_int_mode): New function * optabs.c (expand_float, expand_fix): Use it. * dwarf2out.c (rotate_loc_descriptor): Likewise. diff --git a/gcc/alias.c b/gcc/alias.c index cb57c6a..a02eadc 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -1349,6 +1349,7 @@ static rtx find_base_value (rtx src) { unsigned int regno; + scalar_int_mode int_mode; #if defined (FIND_BASE_TERM) /* Try machine-dependent ways to find the base term. */ @@ -1475,7 +1476,8 @@ find_base_value (rtx src) address modes depending on the address space. */ if (!target_default_pointer_address_modes_p ()) break; - if (GET_MODE_SIZE (GET_MODE (src)) < GET_MODE_SIZE (Pmode)) + if (!is_a <scalar_int_mode> (GET_MODE (src), &int_mode) + || GET_MODE_PRECISION (int_mode) < GET_MODE_PRECISION (Pmode)) break; /* Fall through. */ case HIGH: @@ -1876,6 +1878,7 @@ find_base_term (rtx x) cselib_val *val; struct elt_loc_list *l, *f; rtx ret; + scalar_int_mode int_mode; #if defined (FIND_BASE_TERM) /* Try machine-dependent ways to find the base term. */ @@ -1893,7 +1896,8 @@ find_base_term (rtx x) address modes depending on the address space. */ if (!target_default_pointer_address_modes_p ()) return 0; - if (GET_MODE_SIZE (GET_MODE (x)) < GET_MODE_SIZE (Pmode)) + if (!is_a <scalar_int_mode> (GET_MODE (x), &int_mode) + || GET_MODE_PRECISION (int_mode) < GET_MODE_PRECISION (Pmode)) return 0; /* Fall through. */ case HIGH: |