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Do not allow auto inc/dec to parallelize with an instruction that uses the index register

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Michael Meissner 1997-10-10 04:50:36 +00:00
parent 2feb07dc3f
commit 719ddab4cc
2 changed files with 11 additions and 0 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
Fri Oct 10 00:47:44 1997 Michael Meissner <meissner@cygnus.com>
* config/tc-d10v.c (parallel_ok): Note that auto increment and
decrement modify the index register.
Thu Oct 9 15:17:50 1997 Ian Lance Taylor <ian@cygnus.com>
From Robin Kirkham <Robin.Kirkham@mlb.dmt.csiro.au>:

6
gas/config/tc-d10v.c
View File

@ -871,6 +871,12 @@ parallel_ok (op1, insn1, op2, insn2, exec_type)
used[j] |= 1 << regno ;
if (flags & OPERAND_EVEN)
used[j] |= 1 << (regno + 1);
/* Auto inc/dec also modifies the register. */
if (op->operands[i+1] != 0
&& (d10v_operands[op->operands[i+1]].flags
& (OPERAND_PLUS | OPERAND_MINUS)) != 0)
mod[j] |= 1 << regno;
}
}
}