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| author | Bernd Schmidt <bernds@codesourcery.com> | 2011-07-06 14:21:03 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2011-07-06 14:21:03 +0000 |
| commit | 2d0c270fd266218ff040965bb8231729df9144f1 (patch) | |
| tree | 2a2d891d415bcfdd26b794dc666ecd03b7565eee /gcc/cse.c | |
| parent | 6d6c952527c53637280297b2e6a48d6b21606294 (diff) | |
| download | gcc-2d0c270fd266218ff040965bb8231729df9144f1.zip gcc-2d0c270fd266218ff040965bb8231729df9144f1.tar.gz gcc-2d0c270fd266218ff040965bb8231729df9144f1.tar.bz2 | |
cse.c (find_comparison_args): Use val_mode_signbit_set_p.
* cse.c (find_comparison_args): Use val_mode_signbit_set_p.
* simplify-rtx.c (mode_signbit_p): Use GET_MODE_PRECISION.
(val_mode_signbit_p, val_mode_signbit_set_p): New functions.
(simplify_const_unary_operation, simplify_binary_operation_1,
simplify_const_binary_operation,
simplify_const_relational_operation): Use them. Use
GET_MODE_MASK for masking and sign-extensions.
* combine.c (set_nonzero_bits_and_sign_copies, simplify_set,
combine_simplify_rtx, force_to_mode, reg_nonzero_bits_for_combine,
simplify_shift_const_1, simplify_comparison): Likewise.
* expr.c (convert_modes): Likewise.
* rtlanal.c (nonzero_bits1, canonicalize_condition): Likewise.
* expmed.c (emit_cstore, emit_store_flag_1, emit_store_flag):
Likewise.
* rtl.h (val_mode_signbit_p, val_mode_signbit_set_p): Declare.
From-SVN: r175917
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 16 |
1 files changed, 4 insertions, 12 deletions
@@ -3063,12 +3063,8 @@ find_comparison_args (enum rtx_code code, rtx *parg1, rtx *parg2, for STORE_FLAG_VALUE, also look at LT and GE operations. */ || ((code == NE || (code == LT - && GET_MODE_CLASS (inner_mode) == MODE_INT - && (GET_MODE_BITSIZE (inner_mode) - <= HOST_BITS_PER_WIDE_INT) - && (STORE_FLAG_VALUE - & ((HOST_WIDE_INT) 1 - << (GET_MODE_BITSIZE (inner_mode) - 1)))) + && val_signbit_known_set_p (inner_mode, + STORE_FLAG_VALUE)) #ifdef FLOAT_STORE_FLAG_VALUE || (code == LT && SCALAR_FLOAT_MODE_P (inner_mode) @@ -3083,12 +3079,8 @@ find_comparison_args (enum rtx_code code, rtx *parg1, rtx *parg2, } else if ((code == EQ || (code == GE - && GET_MODE_CLASS (inner_mode) == MODE_INT - && (GET_MODE_BITSIZE (inner_mode) - <= HOST_BITS_PER_WIDE_INT) - && (STORE_FLAG_VALUE - & ((HOST_WIDE_INT) 1 - << (GET_MODE_BITSIZE (inner_mode) - 1)))) + && val_signbit_known_set_p (inner_mode, + STORE_FLAG_VALUE)) #ifdef FLOAT_STORE_FLAG_VALUE || (code == GE && SCALAR_FLOAT_MODE_P (inner_mode) |