[gcc r15-2391] xtensa: Make use of std::swap where appropriate

[Max Filippov via Gcc-cvs]

https://gcc.gnu.org/g:56c4979dd8be40681f2724861fc41ae6135e1e78

commit r15-2391-g56c4979dd8be40681f2724861fc41ae6135e1e78
Author: Takayuki 'January June' Suwa <jjsuwa_sys3...@yahoo.co.jp>
Date:   Sun Jul 14 20:03:13 2024 +0900

    xtensa: Make use of std::swap where appropriate
    
    No functional changes.
    
    gcc/ChangeLog:
    
            * config/xtensa/xtensa.cc
            (gen_int_relational, gen_float_relational): Replace tempvar-based
            value-swapping codes with std::swap.
            * config/xtensa/xtensa.md (movdi_internal, movdf_internal):
            Ditto.

Diff:
---
 gcc/config/xtensa/xtensa.cc | 12 ++----------
 gcc/config/xtensa/xtensa.md | 10 ++++------
 2 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc
index 10d964b51a96..772150c7fa22 100644
--- a/gcc/config/xtensa/xtensa.cc
+++ b/gcc/config/xtensa/xtensa.cc
@@ -794,11 +794,7 @@ gen_int_relational (enum rtx_code test_code, /* relational 
test (EQ, etc) */
 
     }
   else if (p_info->reverse_regs)
-    {
-      rtx temp = cmp0;
-      cmp0 = cmp1;
-      cmp1 = temp;
-    }
+    std::swap (cmp0, cmp1);
 
   return gen_rtx_fmt_ee (invert ? reverse_condition (p_info->test_code)
                                : p_info->test_code,
@@ -842,11 +838,7 @@ gen_float_relational (enum rtx_code test_code, /* 
relational test (EQ, etc) */
     }
 
   if (reverse_regs)
-    {
-      rtx temp = cmp0;
-      cmp0 = cmp1;
-      cmp1 = temp;
-    }
+    std::swap (cmp0, cmp1);
 
   brtmp = gen_rtx_REG (CCmode, FPCC_REGNUM);
   emit_insn (gen_fn (brtmp, cmp0, cmp1));
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
index 8709ef6d7a7d..0fcbb0b7bc37 100644
--- a/gcc/config/xtensa/xtensa.md
+++ b/gcc/config/xtensa/xtensa.md
@@ -1215,9 +1215,8 @@
   xtensa_split_operand_pair (operands, SImode);
   if (reg_overlap_mentioned_p (operands[0], operands[3]))
     {
-      rtx tmp;
-      tmp = operands[0], operands[0] = operands[1], operands[1] = tmp;
-      tmp = operands[2], operands[2] = operands[3], operands[3] = tmp;
+      std::swap (operands[0], operands[1]);
+      std::swap (operands[2], operands[3]);
     }
 })
 
@@ -1562,9 +1561,8 @@
   xtensa_split_operand_pair (operands, SFmode);
   if (reg_overlap_mentioned_p (operands[0], operands[3]))
     {
-      rtx tmp;
-      tmp = operands[0], operands[0] = operands[1], operands[1] = tmp;
-      tmp = operands[2], operands[2] = operands[3], operands[3] = tmp;
+      std::swap (operands[0], operands[1]);
+      std::swap (operands[2], operands[3]);
     }
 })