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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2008-08-28 20:02:54 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2008-08-28 20:02:54 +0000 |
| commit | eef302d277ea42968569a454ed89ba5c236fe156 (patch) | |
| tree | f924db7c9c66de457eab2a6629f8d764877ab80c /gcc/simplify-rtx.c | |
| parent | 9b3f31f2ed0f19d5c740684d85afd71152a473c0 (diff) | |
| download | gcc-eef302d277ea42968569a454ed89ba5c236fe156.zip gcc-eef302d277ea42968569a454ed89ba5c236fe156.tar.gz gcc-eef302d277ea42968569a454ed89ba5c236fe156.tar.bz2 | |
rtl.h (simplify_subreg_regno): Declare.
gcc/
* rtl.h (simplify_subreg_regno): Declare.
* rtlanal.c (simplify_subreg_regno): New function, split out from...
* simplify-rtx.c (simplify_subreg): ...here.
* reload.c (find_reloads): Use simplify_subreg_regno instead of
subreg_offset_representable_p.
From-SVN: r139736
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 34 |
1 files changed, 6 insertions, 28 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 6fd77ff..606a850 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -5069,35 +5069,13 @@ simplify_subreg (enum machine_mode outermode, rtx op, suppress this simplification. If the hard register is the stack, frame, or argument pointer, leave this as a SUBREG. */ - if (REG_P (op) - && REGNO (op) < FIRST_PSEUDO_REGISTER -#ifdef CANNOT_CHANGE_MODE_CLASS - && ! (REG_CANNOT_CHANGE_MODE_P (REGNO (op), innermode, outermode) - && GET_MODE_CLASS (innermode) != MODE_COMPLEX_INT - && GET_MODE_CLASS (innermode) != MODE_COMPLEX_FLOAT) -#endif - && ((reload_completed && !frame_pointer_needed) - || (REGNO (op) != FRAME_POINTER_REGNUM -#if HARD_FRAME_POINTER_REGNUM != FRAME_POINTER_REGNUM - && REGNO (op) != HARD_FRAME_POINTER_REGNUM -#endif - )) -#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM - && REGNO (op) != ARG_POINTER_REGNUM -#endif - && REGNO (op) != STACK_POINTER_REGNUM - && subreg_offset_representable_p (REGNO (op), innermode, - byte, outermode)) + if (REG_P (op) && HARD_REGISTER_P (op)) { - unsigned int regno = REGNO (op); - unsigned int final_regno - = regno + subreg_regno_offset (regno, innermode, byte, outermode); - - /* ??? We do allow it if the current REG is not valid for - its mode. This is a kludge to work around how float/complex - arguments are passed on 32-bit SPARC and should be fixed. */ - if (HARD_REGNO_MODE_OK (final_regno, outermode) - || ! HARD_REGNO_MODE_OK (regno, innermode)) + unsigned int regno, final_regno; + + regno = REGNO (op); + final_regno = simplify_subreg_regno (regno, innermode, byte, outermode); + if (HARD_REGISTER_NUM_P (final_regno)) { rtx x; int final_offset = byte; |