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 --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc
index 10d964b51a96d97e4dc3617f4e6bde5dddab2870..772150c7fa228ca2f80af94df0bb322492db0496 100644 (file)
--- 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 8709ef6d7a7dca196e509bd25e2505cbaf4acd77..0fcbb0b7bc37d52f2796654c583a311a63189689 100644 (file)
--- 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]);
     }
 })