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lvzhengyang
riscv-gcc-1
Commits
e4329280
Commit
e4329280
authored
Mar 31, 1996
by
Richard Kenner
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(propagate_block): CALL_INSNs don't kill fixed regs.
From-SVN: r11646
parent
dc1d6150
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gcc/flow.c
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gcc/flow.c
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e4329280
...
@@ -1622,12 +1622,13 @@ propagate_block (old, first, last, final, significant, bnum)
...
@@ -1622,12 +1622,13 @@ propagate_block (old, first, last, final, significant, bnum)
final
,
insn
);
final
,
insn
);
/* Each call clobbers all call-clobbered regs that are not
/* Each call clobbers all call-clobbered regs that are not
global. Note that the function-value reg is a
global
or fixed
. Note that the function-value reg is a
call-clobbered reg, and mark_set_regs has already had
call-clobbered reg, and mark_set_regs has already had
a chance to handle it. */
a chance to handle it. */
for
(
i
=
0
;
i
<
FIRST_PSEUDO_REGISTER
;
i
++
)
for
(
i
=
0
;
i
<
FIRST_PSEUDO_REGISTER
;
i
++
)
if
(
call_used_regs
[
i
]
&&
!
global_regs
[
i
])
if
(
call_used_regs
[
i
]
&&
!
global_regs
[
i
]
&&
!
fixed_regs
[
i
])
dead
[
i
/
REGSET_ELT_BITS
]
dead
[
i
/
REGSET_ELT_BITS
]
|=
((
REGSET_ELT_TYPE
)
1
<<
(
i
%
REGSET_ELT_BITS
));
|=
((
REGSET_ELT_TYPE
)
1
<<
(
i
%
REGSET_ELT_BITS
));
...
...
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