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gcse.c (insert_insn_end_bb): Correct placement of insns when the current block starts with a CODE_LABEL and...

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        * gcse.c (insert_insn_end_bb): Correct placement of insns when the
        current block starts with a CODE_LABEL and ends with a CALL and
        we can not find all the argument setup instructions for the CALL.

From-SVN: r27321
This commit is contained in:
Jeff Law 1999-06-02 18:19:42 -06:00
parent cd5828a94e
commit b1d26727ac
1 changed files with 20 additions and 3 deletions
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23
gcc/gcse.c
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@ -4189,9 +4189,26 @@ insert_insn_end_bb (expr, bb, pre)
} }
} }
new_insn = emit_insn_before (pat, insn); /* If we found all the parameter loads, then we want to insert
if (BLOCK_HEAD (bb) == insn) before the first parameter load.
BLOCK_HEAD (bb) = new_insn;
If we did not find all the parameter loads, then we might have
stopped on the head of the block, which could be a CODE_LABEL.
If we inserted before the CODE_LABEL, then we would be putting
the insn in the wrong basic block. In that case, put the insn
after the CODE_LABEL.
?!? Do we need to account for NOTE_INSN_BASIC_BLOCK here? */
if (GET_CODE (insn) != CODE_LABEL)
{
new_insn = emit_insn_before (pat, insn);
if (BLOCK_HEAD (bb) == insn)
BLOCK_HEAD (bb) = new_insn;
}
else
{
new_insn = emit_insn_after (pat, insn);
}
} }
else else
{ {