diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/optabs.c | 30 |
2 files changed, 35 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bf1f13a..c6a2561 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2015-11-09 Steve Ellcey <sellcey@imgtec.com> + + * optabs.c (prepare_libcall_arg): New function. + (expand_fixed_convert): Add call to prepare_libcall_arg. + 2015-11-09 Nikolai Bozhenov <n.bozhenov@samsung.com> * sched-int.h (dump_rgn_dependencies_dot): Declare diff --git a/gcc/optabs.c b/gcc/optabs.c index 44971ad..79c5873 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -4838,6 +4838,33 @@ expand_fix (rtx to, rtx from, int unsignedp) } } + +/* Promote integer arguments for a libcall if necessary. + emit_library_call_value cannot do the promotion because it does not + know if it should do a signed or unsigned promotion. This is because + there are no tree types defined for libcalls. */ + +static rtx +prepare_libcall_arg (rtx arg, int uintp) +{ + machine_mode mode = GET_MODE (arg); + machine_mode arg_mode; + if (SCALAR_INT_MODE_P (mode)) + { + /* If we need to promote the integer function argument we need to do + it here instead of inside emit_library_call_value because in + emit_library_call_value we don't know if we should do a signed or + unsigned promotion. */ + + int unsigned_p = 0; + arg_mode = promote_function_mode (NULL_TREE, mode, + &unsigned_p, NULL_TREE, 0); + if (arg_mode != mode) + return convert_to_mode (arg_mode, arg, uintp); + } + return arg; +} + /* Generate code to convert FROM or TO a fixed-point. If UINTP is true, either TO or FROM is an unsigned integer. If SATP is true, we need to saturate the result. */ @@ -4880,6 +4907,9 @@ expand_fixed_convert (rtx to, rtx from, int uintp, int satp) libfunc = convert_optab_libfunc (tab, to_mode, from_mode); gcc_assert (libfunc); + from = prepare_libcall_arg (from, uintp); + from_mode = GET_MODE (from); + start_sequence (); value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST, to_mode, 1, from, from_mode); |