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[multiple changes]

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2009-09-20  Paolo Bonzini <bonzini@gnu.org>

	PR/39886
	* combine.c (update_cfg_for_uncondjump): Set EDGE_FALLTHRU
	just when insn is equal to BB_END (bb).

2009-09-20  Kai Tietz  <kai.tietz@onevision.com>

	* gcc.c-tortue/compile/pr39886.c: New.

From-SVN: r151895
This commit is contained in:
Kai Tietz 2009-09-20 11:22:11 +02:00
parent ed6d9a1b9b
commit 63c6c7e070
4 changed files with 26 additions and 3 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2009-09-20 Paolo Bonzini <bonzini@gnu.org>
PR/39886
* combine.c (update_cfg_for_uncondjump): Set EDGE_FALLTHRU
just when insn is equal to BB_END (bb).
2009-09-19 Adam Nemet <anemet@caviumnetworks.com>
* config/mips/mips.opt (mrelax-pic-calls): New option.

7
gcc/combine.c
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@ -2363,7 +2363,7 @@ propagate_for_debug (rtx insn, rtx last, rtx dest, rtx src, bool move)
}
}
/* Delete the conditional jump INSN and adjust the CFG correspondingly.
/* Delete the unconditional jump INSN and adjust the CFG correspondingly.
Note that the INSN should be deleted *after* removing dead edges, so
that the kept edge is the fallthrough edge for a (set (pc) (pc))
but not for a (set (pc) (label_ref FOO)). */
@ -2372,12 +2372,13 @@ static void
update_cfg_for_uncondjump (rtx insn)
{
basic_block bb = BLOCK_FOR_INSN (insn);
bool at_end = (BB_END (bb) == insn);
if (BB_END (bb) == insn)
if (at_end)
purge_dead_edges (bb);
delete_insn (insn);
if (EDGE_COUNT (bb->succs) == 1)
if (at_end && EDGE_COUNT (bb->succs) == 1)
single_succ_edge (bb)->flags |= EDGE_FALLTHRU;
}

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2009-09-20 Kai Tietz <kai.tietz@onevision.com>
* gcc.c-tortue/compile/pr39886.c: New.
2009-09-20 Chris Demetriou <cgd@google.com>
PR preprocessor/28435:

12
gcc/testsuite/gcc.c-torture/compile/pr39886.c Normal file
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@ -0,0 +1,12 @@
/* PR middle-end/39886 */
int foo (int);
volatile unsigned char g;
void bar (int p)
{
char l = 0xE1;
func ((foo ((p & g) <= l), 1));
}