diff options
| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-07-07 13:31:34 +0000 |
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| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-07-07 13:31:34 +0000 |
| commit | 8f78d2ac93161dc7602378401f4d520e96fc5cb2 (patch) | |
| tree | 42212a3e689de70cfdfff26a258c8ac0cad00364 /gcc/expr.c | |
| parent | 0356b3a3150abd70534261dda1ed91d265d5089c (diff) | |
| download | gcc-8f78d2ac93161dc7602378401f4d520e96fc5cb2.tar.gz | |
2011-07-07 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 175963 using svnmerge.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@175972 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/gcc/expr.c b/gcc/expr.c index 176978a2257..af4c2fb8826 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -586,8 +586,7 @@ convert_move (rtx to, rtx from, int unsignedp) /* For truncation, usually we can just refer to FROM in a narrower mode. */ if (GET_MODE_BITSIZE (to_mode) < GET_MODE_BITSIZE (from_mode) - && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (to_mode), - GET_MODE_BITSIZE (from_mode))) + && TRULY_NOOP_TRUNCATION_MODES_P (to_mode, from_mode)) { if (!((MEM_P (from) && ! MEM_VOLATILE_P (from) @@ -625,8 +624,7 @@ convert_move (rtx to, rtx from, int unsignedp) if (((can_extend_p (to_mode, intermediate, unsignedp) != CODE_FOR_nothing) || (GET_MODE_SIZE (to_mode) < GET_MODE_SIZE (intermediate) - && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (to_mode), - GET_MODE_BITSIZE (intermediate)))) + && TRULY_NOOP_TRUNCATION_MODES_P (to_mode, intermediate))) && (can_extend_p (intermediate, from_mode, unsignedp) != CODE_FOR_nothing)) { @@ -754,8 +752,8 @@ convert_modes (enum machine_mode mode, enum machine_mode oldmode, rtx x, int uns || (REG_P (x) && (! HARD_REGISTER_P (x) || HARD_REGNO_MODE_OK (REGNO (x), mode)) - && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (mode), - GET_MODE_BITSIZE (GET_MODE (x))))))))) + && TRULY_NOOP_TRUNCATION_MODES_P (mode, + GET_MODE (x)))))))) { /* ?? If we don't know OLDMODE, we have to assume here that X does not need sign- or zero-extension. This may not be @@ -764,14 +762,13 @@ convert_modes (enum machine_mode mode, enum machine_mode oldmode, rtx x, int uns && GET_MODE_SIZE (mode) > GET_MODE_SIZE (oldmode)) { HOST_WIDE_INT val = INTVAL (x); - int width = GET_MODE_BITSIZE (oldmode); /* We must sign or zero-extend in this case. Start by zero-extending, then sign extend if we need to. */ - val &= ((HOST_WIDE_INT) 1 << width) - 1; + val &= GET_MODE_MASK (oldmode); if (! unsignedp - && (val & ((HOST_WIDE_INT) 1 << (width - 1)))) - val |= (HOST_WIDE_INT) (-1) << width; + && val_signbit_known_set_p (oldmode, val)) + val |= ~GET_MODE_MASK (oldmode); return gen_int_mode (val, mode); } @@ -6500,9 +6497,7 @@ force_operand (rtx value, rtx target) #ifdef INSN_SCHEDULING /* On machines that have insn scheduling, we want all memory reference to be explicit, so we need to deal with such paradoxical SUBREGs. */ - if (GET_CODE (value) == SUBREG && MEM_P (SUBREG_REG (value)) - && (GET_MODE_SIZE (GET_MODE (value)) - > GET_MODE_SIZE (GET_MODE (SUBREG_REG (value))))) + if (paradoxical_subreg_p (value) && MEM_P (SUBREG_REG (value))) value = simplify_gen_subreg (GET_MODE (value), force_reg (GET_MODE (SUBREG_REG (value)), |