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(sched_note_set): Set subreg_p for anything except a paradoxical subreg.

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From-SVN: r2464
This commit is contained in:
Jim Wilson 1992-10-14 15:57:42 -07:00
parent ea9c5b9e08
commit 22162da3d7
1 changed files with 4 additions and 5 deletions
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9
gcc/sched.c
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@ -2042,11 +2042,10 @@ sched_note_set (b, x, death)
{
/* Must treat modification of just one hardware register of a multi-reg
value or just a byte field of a register exactly the same way that
mark_set_1 in flow.c does. */
if (GET_CODE (reg) == ZERO_EXTRACT
|| GET_CODE (reg) == SIGN_EXTRACT
|| (GET_CODE (reg) == SUBREG
&& REG_SIZE (SUBREG_REG (reg)) > REG_SIZE (reg)))
mark_set_1 in flow.c does, i.e. anything except a paradoxical subreg
does not kill the entire register. */
if (GET_CODE (reg) != SUBREG
|| REG_SIZE (SUBREG_REG (reg)) > REG_SIZE (reg))
subreg_p = 1;
reg = SUBREG_REG (reg);