[gcc/devel/omp/gcc-12] amdgcn: Add builtin for vectorized DFmode fabs operation

[Kwok Yeung <kcy@gcc.gnu.org>]

https://gcc.gnu.org/g:87caae2e83f7a8c2c9bf0ba996bc75220e54fadf

commit 87caae2e83f7a8c2c9bf0ba996bc75220e54fadf
Author: Kwok Cheung Yeung <kcy@codesourcery.com>
Date:   Tue Sep 27 21:30:11 2022 +0000

    amdgcn: Add builtin for vectorized DFmode fabs operation
    
    2022-09-27  Kwok Cheung Yeung  <kcy@codesourcery.com>
    
            gcc/
            * config/gcn/gcn-builtins.def (FABSV): New builtin.
            * config/gcn/gcn.cc (gcn_expand_builtin_1): Generate
            builtin for GCN_BUILTIN_FABSV.

Diff:
---
 gcc/ChangeLog.omp               |  6 ++++++
 gcc/config/gcn/gcn-builtins.def |  5 +++++
 gcc/config/gcn/gcn.cc           | 13 +++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp
index 39e094476c9..9933325bf20 100644
--- a/gcc/ChangeLog.omp
+++ b/gcc/ChangeLog.omp
@@ -1,3 +1,9 @@
+2022-09-27  Kwok Cheung Yeung  <kcy@codesourcery.com>
+
+	* config/gcn/gcn-builtins.def (FABSV): New builtin.
+	* config/gcn/gcn.cc (gcn_expand_builtin_1): Generate
+	builtin for GCN_BUILTIN_FABSV.
+
 2022-09-27  Kwok Cheung Yeung  <kcy@codesourcery.com>
 
 	* config/gcn/gcn-valu.md (math_unop_insn): New attribute.
diff --git a/gcc/config/gcn/gcn-builtins.def b/gcc/config/gcn/gcn-builtins.def
index 27691909925..21e3f0131e4 100644
--- a/gcc/config/gcn/gcn-builtins.def
+++ b/gcc/config/gcn/gcn-builtins.def
@@ -64,6 +64,11 @@ DEF_BUILTIN (FABSVF, 3 /*CODE_FOR_fabsvf */,
 	     _A2 (GCN_BTI_V64SF, GCN_BTI_V64SF),
 	     gcn_expand_builtin_1)
 
+DEF_BUILTIN (FABSV, 3 /*CODE_FOR_fabsv */,
+	     "fabsv", B_INSN,
+	     _A2 (GCN_BTI_V64DF, GCN_BTI_V64DF),
+	     gcn_expand_builtin_1)
+
 DEF_BUILTIN (LDEXPVF, 3 /*CODE_FOR_ldexpvf */,
 	     "ldexpvf", B_INSN,
 	     _A3 (GCN_BTI_V64SF, GCN_BTI_V64SF, GCN_BTI_V64SI),
diff --git a/gcc/config/gcn/gcn.cc b/gcc/config/gcn/gcn.cc
index ac8784a9a3d..a3f21abc391 100644
--- a/gcc/config/gcn/gcn.cc
+++ b/gcc/config/gcn/gcn.cc
@@ -4032,6 +4032,19 @@ gcn_expand_builtin_1 (tree exp, rtx target, rtx /*subtarget */ ,
 		   (target, arg, gcn_gen_undef (V64SFmode), exec));
 	return target;
       }
+    case GCN_BUILTIN_FABSV:
+      {
+	if (ignore)
+	  return target;
+	rtx exec = gcn_full_exec_reg ();
+	rtx arg = force_reg (V64DFmode,
+			     expand_expr (CALL_EXPR_ARG (exp, 0), NULL_RTX,
+					  V64DFmode,
+					  EXPAND_NORMAL));
+	emit_insn (gen_absv64df2_exec
+		   (target, arg, gcn_gen_undef (V64DFmode), exec));
+	return target;
+      }
     case GCN_BUILTIN_LDEXPVF:
       {
 	if (ignore)