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riscv-gcc-1
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lvzhengyang
riscv-gcc-1
Commits
af2cc4dd
Commit
af2cc4dd
authored
Mar 16, 1993
by
Richard Stallman
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(expand_binop): For doubleword int addition,
clobber the whole register at the start. From-SVN: r3754
parent
1a6603da
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gcc/optabs.c
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af2cc4dd
...
@@ -590,6 +590,10 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
...
@@ -590,6 +590,10 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
||
target
==
xop0
||
target
==
xop1
)
||
target
==
xop0
||
target
==
xop1
)
target
=
gen_reg_rtx
(
mode
);
target
=
gen_reg_rtx
(
mode
);
/* Indicate for flow that the entire target reg is being set. */
if
(
GET_CODE
(
target
)
==
REG
)
emit_insn
(
gen_rtx
(
CLOBBER
,
VOIDmode
,
target
));
/* Do the actual arithmetic. */
/* Do the actual arithmetic. */
for
(
i
=
0
;
i
<
nwords
;
i
++
)
for
(
i
=
0
;
i
<
nwords
;
i
++
)
{
{
...
...
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