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* cfgrtl.c (purge_dead_edges): Correct handling of EDGE_EH.

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From-SVN: r53521
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Mark Mitchell 2002-05-16 17:04:55 +00:00 committed by Mark Mitchell
parent 48f6efae63
commit 5a566bed2b
2 changed files with 18 additions and 5 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2002-05-16 Mark Mitchell <mark@codesourcery.com>
* cfgrtl.c (purge_dead_edges): Correct handling of EDGE_EH.
2002-05-16 Nick Clifton <nickc@cambridge.redhat.com>
* config/arm/arm.c (arm_rtx_costs): Check for RTX being a

19
gcc/cfgrtl.c
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@ -2186,17 +2186,26 @@ purge_dead_edges (bb)
e->flags &= ~EDGE_ABNORMAL;
/* Check purposes we can have edge. */
if ((e->flags & EDGE_FALLTHRU)
&& any_condjump_p (insn))
/* See if this edge is one we should keep. */
if ((e->flags & EDGE_FALLTHRU) && any_condjump_p (insn))
/* A conditional jump can fall through into the next
block, so we should keep the edge. */
continue;
else if (e->dest != EXIT_BLOCK_PTR
&& e->dest->head == JUMP_LABEL (insn))
/* If the destination block is the target of the jump,
keep the edge. */
continue;
else if (e->dest == EXIT_BLOCK_PTR
&& returnjump_p (insn))
else if (e->dest == EXIT_BLOCK_PTR && returnjump_p (insn))
/* If the destination block is the exit block, and this
instruction is a return, then keep the edge. */
continue;
else if ((e->flags & EDGE_EH) && can_throw_internal (insn))
/* Keep the edges that correspond to exceptions thrown by
this instruction. */
continue;
/* We do not need this edge. */
bb->flags |= BB_DIRTY;
purged = true;
remove_edge (e);