[gcc(refs/users/meissner/heads/work122-vpair)] Simplify making overloaded fp built-in functions.

[gcc(refs/users/meissner/heads/work122-vpair)] Simplify making overloaded fp built-in functions.

[Michael Meissner]

https://gcc.gnu.org/g:274266466944b79d55972540443d1ab3d64ffd4b

commit 274266466944b79d55972540443d1ab3d64ffd4b
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Fri Jun 16 21:55:06 2023 -0400

    Simplify making overloaded fp built-in functions.
    
    2023-06-16   Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/
    
            * config/rs6000/rs6000-builtin.cc (fold_builtin_overload_fp): New helper
            function.
            (rs6000_gimple_fold_builtin): Move common code for built-in overloaded
            floating point functions  into fold_builtin_overload_fp.

Diff:
---
 gcc/config/rs6000/rs6000-builtin.cc | 81 ++++++++++++++++++-------------------
 1 file changed, 39 insertions(+), 42 deletions(-)

diff --git a/gcc/config/rs6000/rs6000-builtin.cc b/gcc/config/rs6000/rs6000-builtin.cc
index 54e6b9e7c9c..2b6e39ba638 100644
--- a/gcc/config/rs6000/rs6000-builtin.cc
+++ b/gcc/config/rs6000/rs6000-builtin.cc
@@ -1261,6 +1261,37 @@ rs6000_gimple_fold_mma_builtin (gimple_stmt_iterator *gsi,
   return true;
 }
 
+/* Helper function to fold the overloaded fp functions for the scalar and
+   vector types that support the operation directly.  */
+
+static void
+fold_builtin_overload_fp (gimple_stmt_iterator *gsi,
+			  gimple *stmt,
+			  enum tree_code code)
+{
+  location_t loc = gimple_location (stmt);
+  tree lhs = gimple_call_lhs (stmt);
+  tree t;
+
+  if (code == ABS_EXPR || code == NEGATE_EXPR)
+    {
+      tree arg0 = gimple_call_arg (stmt, 0);
+      t = build1 (code, TREE_TYPE (lhs), arg0);
+    }
+
+  else
+    {
+      tree arg0 = gimple_call_arg (stmt, 0);
+      tree arg1 = gimple_call_arg (stmt, 1);
+      t = build2 (code, TREE_TYPE (lhs), arg0, arg1);
+    }
+
+  gimple *g = gimple_build_assign (lhs, t);
+  gimple_set_location (g, loc);
+  gsi_replace (gsi, g, true);
+  return;
+}
+
 /* Fold a machine-dependent built-in in GIMPLE.  (For folding into
    a constant, use rs6000_fold_builtin.)  */
 bool
@@ -2233,32 +2264,15 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi)
     case RS6000_BIF_ABS_F32_VECTOR:
     case RS6000_BIF_ABS_F64_SCALAR:
     case RS6000_BIF_ABS_F64_VECTOR:
-      {
-	location_t loc = gimple_location (stmt);
-	lhs = gimple_call_lhs (stmt);
-	arg0 = gimple_call_arg (stmt, 0);
-	tree t = build1 (ABS_EXPR, TREE_TYPE (lhs), arg0);
-	g = gimple_build_assign (lhs, t);
-	gimple_set_location (g, loc);
-	gsi_replace (gsi, g, true);
-	return true;
-      }
+      fold_builtin_overload_fp (gsi, stmt, ABS_EXPR);
+      return true;
 
     case RS6000_BIF_ADD_F32_SCALAR:
     case RS6000_BIF_ADD_F32_VECTOR:
     case RS6000_BIF_ADD_F64_SCALAR:
     case RS6000_BIF_ADD_F64_VECTOR:
-      {
-	location_t loc = gimple_location (stmt);
-	lhs = gimple_call_lhs (stmt);
-	arg0 = gimple_call_arg (stmt, 0);
-	arg1 = gimple_call_arg (stmt, 1);
-	tree t = build2 (PLUS_EXPR, TREE_TYPE (lhs), arg0, arg1);
-	g = gimple_build_assign (lhs, t);
-	gimple_set_location (g, loc);
-	gsi_replace (gsi, g, true);
-	return true;
-      }
+      fold_builtin_overload_fp (gsi, stmt, PLUS_EXPR);
+      return true;
 
     case RS6000_BIF_FMA_F32_SCALAR:
     case RS6000_BIF_FMA_F32_VECTOR:
@@ -2283,32 +2297,15 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi)
     case RS6000_BIF_MULT_F64_VECTOR:
     case RS6000_BIF_SCALE_F32_SCALAR:
     case RS6000_BIF_SCALE_F64_SCALAR:
-      {
-	location_t loc = gimple_location (stmt);
-	lhs = gimple_call_lhs (stmt);
-	arg0 = gimple_call_arg (stmt, 0);
-	arg1 = gimple_call_arg (stmt, 1);
-	tree t = build2 (MULT_EXPR, TREE_TYPE (lhs), arg0, arg1);
-	g = gimple_build_assign (lhs, t);
-	gimple_set_location (g, loc);
-	gsi_replace (gsi, g, true);
-	return true;
-      }
+      fold_builtin_overload_fp (gsi, stmt, MULT_EXPR);
+      return true;
 
     case RS6000_BIF_NEG_F32_SCALAR:
     case RS6000_BIF_NEG_F32_VECTOR:
     case RS6000_BIF_NEG_F64_SCALAR:
     case RS6000_BIF_NEG_F64_VECTOR:
-      {
-	location_t loc = gimple_location (stmt);
-	lhs = gimple_call_lhs (stmt);
-	arg0 = gimple_call_arg (stmt, 0);
-	tree t = build1 (NEGATE_EXPR, TREE_TYPE (lhs), arg0);
-	g = gimple_build_assign (lhs, t);
-	gimple_set_location (g, loc);
-	gsi_replace (gsi, g, true);
-	return true;
-      }
+      fold_builtin_overload_fp (gsi, stmt, NEGATE_EXPR);
+      return true;
 
     case RS6000_BIF_REDUCE_F32_SCALAR:
     case RS6000_BIF_REDUCE_F64_SCALAR: