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Lines 2635-2640
is_just_move (rtx x)
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| 2635 |
return (GET_CODE (x) == SET && general_operand (SET_SRC (x), VOIDmode)); |
2635 |
return (GET_CODE (x) == SET && general_operand (SET_SRC (x), VOIDmode)); |
| 2636 |
} |
2636 |
} |
| 2637 |
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2637 |
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2638 |
/* Return whether X is just a single set, |
| 2639 |
with the source a sign/zero extend general_operand. */ |
| 2640 |
static bool |
| 2641 |
is_just_extend_move (rtx x) |
| 2642 |
{ |
| 2643 |
if (INSN_P (x)) |
| 2644 |
x = PATTERN (x); |
| 2645 |
if(GET_CODE (x) == SET) |
| 2646 |
if (GET_CODE (SET_SRC (x)) == ZERO_EXTEND || GET_CODE (SET_SRC (x)) == SIGN_EXTEND) |
| 2647 |
return (general_operand ((XEXP (SET_SRC (x), 0)), VOIDmode)); |
| 2648 |
return (GET_CODE (x) == SET && general_operand (SET_SRC (x), VOIDmode)); |
| 2649 |
} |
| 2650 |
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| 2638 |
/* Callback function to count autoincs. */ |
2651 |
/* Callback function to count autoincs. */ |
| 2639 |
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2652 |
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| 2640 |
static int |
2653 |
static int |
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Lines 3103-3110
try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
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| 3103 |
} |
3116 |
} |
| 3104 |
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3117 |
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| 3105 |
/* Record whether i2 and i3 are trivial moves. */ |
3118 |
/* Record whether i2 and i3 are trivial moves. */ |
| 3106 |
i2_was_move = is_just_move (i2); |
3119 |
i2_was_move = is_just_move (i2) || is_just_extend_move(i2); |
| 3107 |
i3_was_move = is_just_move (i3); |
3120 |
i3_was_move = is_just_move (i3) || is_just_extend_move(i3); |
| 3108 |
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3121 |
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| 3109 |
/* Record whether I2DEST is used in I2SRC and similarly for the other |
3122 |
/* Record whether I2DEST is used in I2SRC and similarly for the other |
| 3110 |
cases. Knowing this will help in register status updating below. */ |
3123 |
cases. Knowing this will help in register status updating below. */ |