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From-SVN: r1332
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Richard Stallman 1992-06-29 04:29:24 +00:00
parent a4219ac740
commit 944e5f7770
1 changed files with 3 additions and 2 deletions
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5
gcc/flow.c
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@ -1628,13 +1628,14 @@ libcall_dead_p (x, needed, note, insn)
} }
/* Return 1 if register REGNO was used before it was set. /* Return 1 if register REGNO was used before it was set.
In other words, if it is live at function entry. */ In other words, if it is live at function entry.
Don't count global regster variables, though. */
int int
regno_uninitialized (regno) regno_uninitialized (regno)
int regno; int regno;
{ {
if (n_basic_blocks == 0) if (n_basic_blocks == 0 || global_regs[regno])
return 0; return 0;
return (basic_block_live_at_start[0][regno / REGSET_ELT_BITS] return (basic_block_live_at_start[0][regno / REGSET_ELT_BITS]