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| author | Bernd Schmidt <bernds@codesourcery.com> | 2011-07-06 23:11:51 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2011-07-06 23:11:51 +0000 |
| commit | 6a4bdc797621dbf63470b88dcd50095571b0fe1d (patch) | |
| tree | 5f9f7faef58377378ef03c74cddbf4a06d8c42d4 /gcc/reload1.c | |
| parent | 76594d53186a78667bbb7b25f9231c396509a0a2 (diff) | |
| download | gcc-6a4bdc797621dbf63470b88dcd50095571b0fe1d.tar.gz | |
emit-rtl.c (paradoxical_subreg_p): New function.
* emit-rtl.c (paradoxical_subreg_p): New function.
* rtl.h (paradoxical_subreg_p): Declare.
* combine.c (set_nonzero_bits_and_sign_copies, get_last_value,
apply_distributive_law, simplify_comparison, simplify_set): Use it.
* cse.c (record_jump_cond, cse_insn): Likewise.
* expr.c (force_operand): Likewise.
* rtlanal.c (num_sign_bit_copies1): Likewise.
* reload1.c (eliminate_regs_1, strip_paradoxical_subreg): Likewise.
* reload.c (push_secondary_reload, find_reloads_toplev): Likewise.
(push_reload): Use precision to check for paradoxical subregs.
* expmed.c (extract_bit_field_1): Likewise.
From-SVN: r175944
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index a9aa01723ee..7f84fc81416 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -2840,8 +2840,7 @@ eliminate_regs_1 (rtx x, enum machine_mode mem_mode, rtx insn, eliminated version of the memory location because push_reload may do the replacement in certain circumstances. */ if (REG_P (SUBREG_REG (x)) - && (GET_MODE_SIZE (GET_MODE (x)) - <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))) + && !paradoxical_subreg_p (x) && reg_equivs && reg_equiv_memory_loc (REGNO (SUBREG_REG (x))) != 0) { @@ -4495,12 +4494,9 @@ strip_paradoxical_subreg (rtx *op_ptr, rtx *other_ptr) rtx op, inner, other, tem; op = *op_ptr; - if (GET_CODE (op) != SUBREG) + if (!paradoxical_subreg_p (op)) return false; - inner = SUBREG_REG (op); - if (GET_MODE_SIZE (GET_MODE (op)) <= GET_MODE_SIZE (GET_MODE (inner))) - return false; other = *other_ptr; tem = gen_lowpart_common (GET_MODE (inner), other); |