diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expr.c | 20 |
2 files changed, 25 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f5500c9..04dda80 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2014-08-29 DJ Delorie <dj@redhat.com> + + * expr.c (convert_move): If the target has an explicit converter, + use it. + 2014-08-29 David Malcolm <dmalcolm@redhat.com> * gdbinit.in: Skip various inline functions in rtl.h when @@ -410,6 +410,26 @@ convert_move (rtx to, rtx from, int unsignedp) } /* Handle pointer conversion. */ /* SPEE 900220. */ + /* If the target has a converter from FROM_MODE to TO_MODE, use it. */ + { + convert_optab ctab; + + if (GET_MODE_PRECISION (from_mode) > GET_MODE_PRECISION (to_mode)) + ctab = trunc_optab; + else if (unsignedp) + ctab = zext_optab; + else + ctab = sext_optab; + + if (convert_optab_handler (ctab, to_mode, from_mode) + != CODE_FOR_nothing) + { + emit_unop_insn (convert_optab_handler (ctab, to_mode, from_mode), + to, from, UNKNOWN); + return; + } + } + /* Targets are expected to provide conversion insns between PxImode and xImode for all MODE_PARTIAL_INT modes they use, but no others. */ if (GET_MODE_CLASS (to_mode) == MODE_PARTIAL_INT) |