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| author | Jakub Jelinek <jakub@redhat.com> | 2011-09-27 09:29:21 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-09-27 09:29:21 +0200 |
| commit | e7c82a992521536902a0b230d9b7508e27cd7839 (patch) | |
| tree | 4aa113c1bf28b09947ed8356c4d508a5ad73380f /gcc/emit-rtl.c | |
| parent | 16fa5e238ac913a6713582d7d93e9289d1ac802a (diff) | |
| download | gcc-e7c82a992521536902a0b230d9b7508e27cd7839.zip gcc-e7c82a992521536902a0b230d9b7508e27cd7839.tar.gz gcc-e7c82a992521536902a0b230d9b7508e27cd7839.tar.bz2 | |
rtl.h (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE from 3 x MAX_MACHINE_MODE.
* rtl.h (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE
from 3 x MAX_MACHINE_MODE.
(CONSTM1_RTX): Define.
* emit-rtl.c (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE
from 3 x MAX_MACHINE_MODE.
(gen_rtx_CONST_VECTOR): Use CONSTM1_RTX if all inner constants are
CONSTM1_RTX.
(init_emit_once): Initialize CONSTM1_RTX for MODE_INT and
MODE_VECTOR_INT modes.
* simplify-rtx.c (simplify_binary_operation_1) <case IOR, XOR, AND>:
Optimize if one operand is CONSTM1_RTX.
* config/i386/i386.c (ix86_expand_sse_movcc): Optimize mask ? -1 : x
into mask | x.
From-SVN: r179238
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index ee38d3c..dae7669 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -93,9 +93,10 @@ static GTY(()) int label_num = 1; /* We record floating-point CONST_DOUBLEs in each floating-point mode for the values of 0, 1, and 2. For the integer entries and VOIDmode, we - record a copy of const[012]_rtx. */ + record a copy of const[012]_rtx and constm1_rtx. CONSTM1_RTX + is set only for MODE_INT and MODE_VECTOR_INT modes. */ -rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; +rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE]; rtx const_true_rtx; @@ -5514,6 +5515,8 @@ gen_rtx_CONST_VECTOR (enum machine_mode mode, rtvec v) return CONST0_RTX (mode); else if (x == CONST1_RTX (inner)) return CONST1_RTX (mode); + else if (x == CONSTM1_RTX (inner)) + return CONSTM1_RTX (mode); } return gen_rtx_raw_CONST_VECTOR (mode, v); @@ -5674,7 +5677,7 @@ init_emit_once (void) dconsthalf = dconst1; SET_REAL_EXP (&dconsthalf, REAL_EXP (&dconsthalf) - 1); - for (i = 0; i < (int) ARRAY_SIZE (const_tiny_rtx); i++) + for (i = 0; i < 3; i++) { const REAL_VALUE_TYPE *const r = (i == 0 ? &dconst0 : i == 1 ? &dconst1 : &dconst2); @@ -5704,6 +5707,13 @@ init_emit_once (void) const_tiny_rtx[i][(int) mode] = GEN_INT (i); } + const_tiny_rtx[3][(int) VOIDmode] = constm1_rtx; + + for (mode = GET_CLASS_NARROWEST_MODE (MODE_INT); + mode != VOIDmode; + mode = GET_MODE_WIDER_MODE (mode)) + const_tiny_rtx[3][(int) mode] = constm1_rtx; + for (mode = GET_CLASS_NARROWEST_MODE (MODE_COMPLEX_INT); mode != VOIDmode; mode = GET_MODE_WIDER_MODE (mode)) @@ -5726,6 +5736,7 @@ init_emit_once (void) { const_tiny_rtx[0][(int) mode] = gen_const_vector (mode, 0); const_tiny_rtx[1][(int) mode] = gen_const_vector (mode, 1); + const_tiny_rtx[3][(int) mode] = gen_const_vector (mode, 3); } for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT); |