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riscv-gcc-1
Commit bd80fbde by Richard Henderson Committed by Richard Henderson
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* flow.c (regno_uninitialized): Fixed regs are never uninitialized. 

From-SVN: r21321
parent 50ea20cf
Showing with 11 additions and 5 deletions
gcc/ChangeLog
Tue Jul 21 08:55:09 1998 Richard Henderson <rth@cygnus.com>
* flow.c (regno_uninitialized): Fixed regs are never uninitialized.
Tue Jul 21 00:31:01 1998 Jeffrey A Law (law@cygnus.com)
* gcc.c (do_spec): Call "error" not "warning".
......
gcc/flow.c
......@@ -2030,10 +2030,10 @@ libcall_dead_p (x, needed, note, insn)
return 1;
}
/* Return 1 if register REGNO was used before it was set.
In other words, if it is live at function entry.
Don't count global register variables or variables in registers
that can be used for function arg passing, though. */
/* Return 1 if register REGNO was used before it was set, i.e. if it is
live at function entry. Don't count global register variables, variables
in registers that can be used for function arg passing, or variables in
fixed hard registers. */
int
regno_uninitialized (regno)
......@@ -2041,7 +2041,9 @@ regno_uninitialized (regno)
{
if (n_basic_blocks == 0
|| (regno < FIRST_PSEUDO_REGISTER
&& (global_regs[regno] || FUNCTION_ARG_REGNO_P (regno))))
&& (global_regs[regno]
|| fixed_regs[regno]
|| FUNCTION_ARG_REGNO_P (regno))))
return 0;
return REGNO_REG_SET_P (basic_block_live_at_start[0], regno);
......
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