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| author | DJ Delorie <dj@redhat.com> | 2014-08-29 19:19:42 -0400 |
|---|---|---|
| committer | DJ Delorie <dj@gcc.gnu.org> | 2014-08-29 19:19:42 -0400 |
| commit | aea3d681ec784b1a44ee3b37b0df2b71bdfadfc3 (patch) | |
| tree | 7f070b263210ec5bbead0e3597a0bb150827c542 /gcc | |
| parent | 4c90724737ae14a9d11e6713ea50ad7409cdc8fe (diff) | |
| download | gcc-aea3d681ec784b1a44ee3b37b0df2b71bdfadfc3.zip gcc-aea3d681ec784b1a44ee3b37b0df2b71bdfadfc3.tar.gz gcc-aea3d681ec784b1a44ee3b37b0df2b71bdfadfc3.tar.bz2 | |
expr.c (convert_move): If the target has an explicit converter, use it.
* expr.c (convert_move): If the target has an explicit converter,
use it.
From-SVN: r214747
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) |