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[combine][obvious] Use std::swap instead of manually swapping

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* combine.c (simplify_if_then_else): Use std::swap instead
	of manually swapping.
	(known_cond): Likewise.
	(simplify_comparison): Likewise.

From-SVN: r222468
This commit is contained in:
Kyrylo Tkachov 2015-04-27 14:56:10 +00:00 committed by Kyrylo Tkachov
parent 01f61a78c6
commit fefcf53279
2 changed files with 15 additions and 6 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2015-04-27 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* combine.c (simplify_if_then_else): Use std::swap instead
of manually swapping.
(known_cond): Likewise.
(simplify_comparison): Likewise.
2015-04-27 Peter Bergner <bergner@vnet.ibm.com>
PR target/64579

14
gcc/combine.c
View File

@ -6194,7 +6194,7 @@ simplify_if_then_else (rtx x)
if (false_code == EQ)
{
swapped = 1, true_code = EQ, false_code = NE;
temp = true_rtx, true_rtx = false_rtx, false_rtx = temp;
std::swap (true_rtx, false_rtx);
}
/* If we are comparing against zero and the expression being tested has
@ -6259,7 +6259,7 @@ simplify_if_then_else (rtx x)
SUBST (XEXP (x, 1), false_rtx);
SUBST (XEXP (x, 2), true_rtx);
temp = true_rtx, true_rtx = false_rtx, false_rtx = temp;
std::swap (true_rtx, false_rtx);
cond = XEXP (x, 0);
/* It is possible that the conditional has been simplified out. */
@ -9031,7 +9031,6 @@ static rtx
known_cond (rtx x, enum rtx_code cond, rtx reg, rtx val)
{
enum rtx_code code = GET_CODE (x);
rtx temp;
const char *fmt;
int i, j;
@ -9071,7 +9070,10 @@ known_cond (rtx x, enum rtx_code cond, rtx reg, rtx val)
else if (COMPARISON_P (x) || COMMUTATIVE_ARITH_P (x))
{
if (rtx_equal_p (XEXP (x, 0), val))
cond = swap_condition (cond), temp = val, val = reg, reg = temp;
{
std::swap (val, reg);
cond = swap_condition (cond);
}
if (rtx_equal_p (XEXP (x, 0), reg) && rtx_equal_p (XEXP (x, 1), val))
{
@ -11448,7 +11450,7 @@ simplify_comparison (enum rtx_code code, rtx *pop0, rtx *pop1)
is already a constant integer. */
if (swap_commutative_operands_p (op0, op1))
{
tem = op0, op0 = op1, op1 = tem;
std::swap (op0, op1);
code = swap_condition (code);
}
@ -12335,7 +12337,7 @@ simplify_comparison (enum rtx_code code, rtx *pop0, rtx *pop1)
/* We may have changed the comparison operands. Re-canonicalize. */
if (swap_commutative_operands_p (op0, op1))
{
tem = op0, op0 = op1, op1 = tem;
std::swap (op0, op1);
code = swap_condition (code);
}