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Make cselib COND_EXEC-safe

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From-SVN: r44713
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Bernd Schmidt 2001-08-08 10:00:56 +00:00 committed by Bernd Schmidt
parent 674fc07da0
commit b7933c21dc
2 changed files with 15 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-08-08 Bernd Schmidt <bernds@redhat.com>
* cselib.c (cselib_record_sets): If insn is predicated, turn
sources into IF_THEN_ELSEs.
2001-08-08 Graham Stott <grahams@redhat.com>
* final.c (shorten_branches): Update the INSN_ADDRESSES of insns

10
gcc/cselib.c
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@ -1179,8 +1179,15 @@ cselib_record_sets (insn)
int i;
struct set sets[MAX_SETS];
rtx body = PATTERN (insn);
rtx cond = 0;
body = PATTERN (insn);
if (GET_CODE (body) == COND_EXEC)
{
cond = COND_EXEC_TEST (body);
body = COND_EXEC_CODE (body);
}
/* Find all sets. */
if (GET_CODE (body) == SET)
{
@ -1219,6 +1226,9 @@ cselib_record_sets (insn)
/* We don't know how to record anything but REG or MEM. */
if (GET_CODE (dest) == REG || GET_CODE (dest) == MEM)
{
rtx src = sets[i].src;
if (cond)
src = gen_rtx_IF_THEN_ELSE (GET_MODE (src), cond, src, dest);
sets[i].src_elt = cselib_lookup (sets[i].src, GET_MODE (dest), 1);
if (GET_CODE (dest) == MEM)
sets[i].dest_addr_elt = cselib_lookup (XEXP (dest, 0), Pmode, 1);