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re PR rtl-optimization/36929 (internal compiler error: Segmentation fault)

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PR rtl-optimization/36929
* dse.c (replace_inc_dec): Use emit_insn_before instead of
add_insn_before and fix argument order.
(replace_inc_dec_mem): Handle NULL rtx.

From-SVN: r138333
This commit is contained in:
Andreas Schwab 2008-07-30 18:22:50 +00:00
parent 2a9cc4de00
commit 2212958921
2 changed files with 228 additions and 224 deletions
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gcc/ChangeLog
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21
gcc/dse.c
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@ -783,10 +783,9 @@ replace_inc_dec (rtx *r, void *d)
{
rtx r1 = XEXP (x, 0);
rtx c = gen_int_mode (Pmode, data->size);
add_insn_before (data->insn,
gen_rtx_SET (Pmode, r1,
gen_rtx_PLUS (Pmode, r1, c)),
NULL);
emit_insn_before (gen_rtx_SET (Pmode, r1,
gen_rtx_PLUS (Pmode, r1, c)),
data->insn);
return -1;
}
@ -795,10 +794,9 @@ replace_inc_dec (rtx *r, void *d)
{
rtx r1 = XEXP (x, 0);
rtx c = gen_int_mode (Pmode, -data->size);
add_insn_before (data->insn,
gen_rtx_SET (Pmode, r1,
gen_rtx_PLUS (Pmode, r1, c)),
NULL);
emit_insn_before (gen_rtx_SET (Pmode, r1,
gen_rtx_PLUS (Pmode, r1, c)),
data->insn);
return -1;
}
@ -809,8 +807,7 @@ replace_inc_dec (rtx *r, void *d)
insn that contained it. */
rtx add = XEXP (x, 0);
rtx r1 = XEXP (add, 0);
add_insn_before (data->insn,
gen_rtx_SET (Pmode, r1, add), NULL);
emit_insn_before (gen_rtx_SET (Pmode, r1, add), data->insn);
return -1;
}
@ -827,12 +824,12 @@ static int
replace_inc_dec_mem (rtx *r, void *d)
{
rtx x = *r;
if (GET_CODE (x) == MEM)
if (x != NULL_RTX && MEM_P (x))
{
struct insn_size data;
data.size = GET_MODE_SIZE (GET_MODE (x));
data.insn = (rtx)d;
data.insn = (rtx) d;
for_each_rtx (&XEXP (x, 0), replace_inc_dec, &data);