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| author | Richard Henderson <rth@gcc.gnu.org> | 2000-09-18 10:55:38 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-09-18 10:55:38 -0700 |
| commit | a191f0ee83fb815187657cadac361e883f496f01 (patch) | |
| tree | 15eac562db9eb775cc5d5a1937b5f0e2fb7f5ce0 /gcc/combine.c | |
| parent | 42d5d0f171ae6a0f933ed7d6cf3adeb653db19c5 (diff) | |
| download | gcc-a191f0ee83fb815187657cadac361e883f496f01.zip gcc-a191f0ee83fb815187657cadac361e883f496f01.tar.gz gcc-a191f0ee83fb815187657cadac361e883f496f01.tar.bz2 | |
machmode.def: Add BImode.
* machmode.def: Add BImode. Add a column for bitsize.
* machmode.h (DEF_MACHMODE): Adjust for extra column.
(GET_MODE_BITSIZE): Use it.
* rtl.c (DEF_MACHMODE): Adjust for extra column.
(mode_bitsize): New.
(mode_mask_array): Use bitsize.
* combine.c (combine_simplify_rtx): Require inner and outer
modes to match on nonzero_bits optimizations.
From-SVN: r36501
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 478aab2..be73be3 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -4347,13 +4347,16 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) if (STORE_FLAG_VALUE == 1 && new_code == NE && GET_MODE_CLASS (mode) == MODE_INT - && op1 == const0_rtx && nonzero_bits (op0, mode) == 1) + && op1 == const0_rtx + && mode == GET_MODE (op0) + && nonzero_bits (op0, mode) == 1) return gen_lowpart_for_combine (mode, expand_compound_operation (op0)); else if (STORE_FLAG_VALUE == 1 && new_code == NE && GET_MODE_CLASS (mode) == MODE_INT && op1 == const0_rtx + && mode == GET_MODE (op0) && (num_sign_bit_copies (op0, mode) == GET_MODE_BITSIZE (mode))) { @@ -4365,6 +4368,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) else if (STORE_FLAG_VALUE == 1 && new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT && op1 == const0_rtx + && mode == GET_MODE (op0) && nonzero_bits (op0, mode) == 1) { op0 = expand_compound_operation (op0); @@ -4376,6 +4380,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) else if (STORE_FLAG_VALUE == 1 && new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT && op1 == const0_rtx + && mode == GET_MODE (op0) && (num_sign_bit_copies (op0, mode) == GET_MODE_BITSIZE (mode))) { @@ -4396,6 +4401,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) else if (STORE_FLAG_VALUE == -1 && new_code == NE && GET_MODE_CLASS (mode) == MODE_INT && op1 == const0_rtx + && mode == GET_MODE (op0) && nonzero_bits (op0, mode) == 1) { op0 = expand_compound_operation (op0); @@ -4406,6 +4412,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) else if (STORE_FLAG_VALUE == -1 && new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT && op1 == const0_rtx + && mode == GET_MODE (op0) && (num_sign_bit_copies (op0, mode) == GET_MODE_BITSIZE (mode))) { @@ -4418,6 +4425,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) else if (STORE_FLAG_VALUE == -1 && new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT && op1 == const0_rtx + && mode == GET_MODE (op0) && nonzero_bits (op0, mode) == 1) { op0 = expand_compound_operation (op0); |