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(update_flow_info): When add REG_DEAD notes for dest of

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last insn, add check for global_regs.

From-SVN: r13318
This commit is contained in:
Jim Wilson 1996-12-17 12:02:06 -08:00
parent 0a49cbd463
commit a2f2ce96f8
1 changed files with 4 additions and 0 deletions
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4
gcc/sched.c
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@ -4629,6 +4629,10 @@ update_flow_info (notes, first, last, orig_insn)
dest = XEXP (dest, 0);
if (GET_CODE (dest) == REG
/* Global registers are always live, so the code below does not
apply to them. */
&& (REGNO (dest) >= FIRST_PSEUDO_REGISTER
|| ! global_regs[REGNO (dest)])
&& ! reg_overlap_mentioned_p (dest, SET_SRC (set)))
{
for (insn = PREV_INSN (last); ; insn = PREV_INSN (insn))