From b17f1129fa56026ab95fc4a9db693bd15ab832fb Mon Sep 17 00:00:00 2001
From: Nemanja Ivanovic <nemanja.i.ibm@gmail.com>
Date: Thu, 11 Jun 2015 06:25:36 +0000
Subject: [PATCH] Clang support for vector quad bit permute and gather
 instructions through builtins

This patch corresponds to review:
http://reviews.llvm.org/D10095

This is for just two instructions and related builtins:
vbpermq
vgbbd

llvm-svn: 239506
---
 clang/include/clang/Basic/BuiltinsPPC.def  |  3 +++
 clang/lib/Headers/altivec.h                | 23 +++++++++++++++++++++++
 clang/test/CodeGen/builtins-ppc-p8vector.c | 23 +++++++++++++++++++++++
 3 files changed, 49 insertions(+)

diff --git a/clang/include/clang/Basic/BuiltinsPPC.def b/clang/include/clang/Basic/BuiltinsPPC.def
index 57ae63e..6f3bea8 100644
--- a/clang/include/clang/Basic/BuiltinsPPC.def
+++ b/clang/include/clang/Basic/BuiltinsPPC.def
@@ -231,6 +231,9 @@ BUILTIN(__builtin_altivec_vcmpgtsd_p, "iiV2LLiV2LLi", "")
 BUILTIN(__builtin_altivec_vcmpgtud_p, "iiV2ULLiV2ULLi", "")
 BUILTIN(__builtin_altivec_vcmpgtfp_p, "iiV4fV4f", "")
 
+BUILTIN(__builtin_altivec_vgbbd, "V16UcV16Uc", "")
+BUILTIN(__builtin_altivec_vbpermq, "V2ULLiV16UcV16Uc", "")
+
 // P8 Crypto built-ins.
 BUILTIN(__builtin_altivec_crypto_vsbox, "V2ULLiV2ULLi", "")
 BUILTIN(__builtin_altivec_crypto_vpermxor, "V16UcV16UcV16UcV16Uc", "")
diff --git a/clang/lib/Headers/altivec.h b/clang/lib/Headers/altivec.h
index 7427ed5..28df890 100644
--- a/clang/lib/Headers/altivec.h
+++ b/clang/lib/Headers/altivec.h
@@ -12012,6 +12012,29 @@ static vector unsigned long long __ATTRS_o_ai __builtin_crypto_vpmsumb(
     vector unsigned long long __a, vector unsigned long long __b) {
   return __builtin_altivec_crypto_vpmsumd(__a, __b);
 }
+
+static vector signed char __ATTRS_o_ai vec_vgbbd (vector signed char __a)
+{
+  return __builtin_altivec_vgbbd((vector unsigned char) __a);
+}
+
+static vector unsigned char __ATTRS_o_ai vec_vgbbd (vector unsigned char __a)
+{
+  return __builtin_altivec_vgbbd(__a);
+}
+
+static vector long long __ATTRS_o_ai
+vec_vbpermq (vector signed char __a, vector signed char __b)
+{
+  return __builtin_altivec_vbpermq((vector unsigned char) __a,
+                                   (vector unsigned char) __b);
+}
+
+static vector long long __ATTRS_o_ai
+vec_vbpermq (vector unsigned char __a, vector unsigned char __b)
+{
+  return __builtin_altivec_vbpermq(__a, __b);
+}
 #endif
 
 #undef __ATTRS_o_ai
diff --git a/clang/test/CodeGen/builtins-ppc-p8vector.c b/clang/test/CodeGen/builtins-ppc-p8vector.c
index f74bbad..ac40790 100644
--- a/clang/test/CodeGen/builtins-ppc-p8vector.c
+++ b/clang/test/CodeGen/builtins-ppc-p8vector.c
@@ -3,6 +3,8 @@
 // RUN: %clang_cc1 -faltivec -target-feature +power8-vector -triple powerpc64le-unknown-unknown -emit-llvm %s -o - | FileCheck %s -check-prefix=CHECK-LE
 // RUN: not %clang_cc1 -faltivec -triple powerpc64-unknown-unknown -emit-llvm %s -o - 2>&1 | FileCheck %s -check-prefix=CHECK-PPC
 
+vector signed char vsc = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5 };
+vector unsigned char vuc = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5 };
 vector int vi = { -1, 2, -3, 4 };
 vector unsigned int vui = { 1, 2, 3, 4 };
 vector bool int vbi = {0, -1, -1, 0};
@@ -11,6 +13,8 @@ vector signed long long vsll = { 1, 2 };
 vector unsigned long long vull = { 1, 2 };
 
 int res_i;
+vector signed char res_vsc;
+vector unsigned char res_vuc;
 vector int res_vi;
 vector unsigned int res_vui;
 vector bool int res_vbi;
@@ -737,4 +741,23 @@ void test1() {
 // CHECK: @llvm.ppc.altivec.vminud
 // CHECK-LE: @llvm.ppc.altivec.vminud
 
+  /* vec_vbpermq */
+  res_vsll = vec_vbpermq(vsc, vsc);
+// CHECK: llvm.ppc.altivec.vbpermq
+// CHECK-LE: llvm.ppc.altivec.vbpermq
+
+  res_vull = vec_vbpermq(vuc, vuc);
+// CHECK: llvm.ppc.altivec.vbpermq
+// CHECK-LE: llvm.ppc.altivec.vbpermq
+// CHECK-PPC: warning: implicit declaration of function 'vec_vbpermq'
+
+  /* vec_vgbbd */
+  res_vsc = vec_vgbbd(vsc);
+// CHECK: llvm.ppc.altivec.vgbbd
+// CHECK-LE: llvm.ppc.altivec.vgbbd
+
+  res_vuc = vec_vgbbd(vuc);
+// CHECK: llvm.ppc.altivec.vgbbd
+// CHECK-LE: llvm.ppc.altivec.vgbbd
+// CHECK-PPC: warning: implicit declaration of function 'vec_vgbbd'
 }
-- 
2.7.4