[PPC] Add vec_absd functions to altivec.h

This patch corresponds to review https://reviews.llvm.org/D26073.
Committing on behalf of Sean Fertile.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@285679 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Basic/BuiltinsPPC.def b/include/clang/Basic/BuiltinsPPC.def
index 4ea943ed6c630ed736880a781bc0e63ef516ada9..a4eb1c3710c20383008ca872b88279f7e6be96eb 100644 (file)
--- a/include/clang/Basic/BuiltinsPPC.def
+++ b/include/clang/Basic/BuiltinsPPC.def
@@ -284,6 +284,11 @@ BUILTIN(__builtin_altivec_vpopcnth, "V8UsV8Us", "")
 BUILTIN(__builtin_altivec_vpopcntw, "V4UiV4Ui", "")
 BUILTIN(__builtin_altivec_vpopcntd, "V2ULLiV2ULLi", "")
 
+// Absolute difference built-ins
+BUILTIN(__builtin_altivec_vabsdub, "V16UcV16UcV16Uc", "")
+BUILTIN(__builtin_altivec_vabsduh, "V8UsV8UsV8Us", "")
+BUILTIN(__builtin_altivec_vabsduw, "V4UiV4UiV4Ui", "")
+
 // VSX built-ins.
 
 BUILTIN(__builtin_vsx_lxvd2x, "V2divC*", "")

diff --git a/lib/Headers/altivec.h b/lib/Headers/altivec.h
index 10714256ff7672b37ff822830e75047716df06f2..3c049a3d3d882e347fd7987f00efc40870c9807d 100644 (file)
--- a/lib/Headers/altivec.h
+++ b/lib/Headers/altivec.h
@@ -163,6 +163,26 @@ vec_abss(vector signed int __a) {
       __a, __builtin_altivec_vsubsws((vector signed int)(0), __a));
 }
 
+/* vec_absd */
+#if defined(__POWER9_VECTOR__)
+
+static __inline__ vector unsigned char __ATTRS_o_ai
+vec_absd(vector unsigned char __a, vector unsigned char __b) {
+  return __builtin_altivec_vabsdub(__a, __b);
+}
+
+static __inline__ vector unsigned short __ATTRS_o_ai
+vec_absd(vector unsigned short __a, vector unsigned short __b) {
+  return __builtin_altivec_vabsduh(__a, __b);
+}
+
+static __inline__ vector unsigned int __ATTRS_o_ai
+vec_absd(vector unsigned int __a,  vector unsigned int __b) {
+  return __builtin_altivec_vabsduw(__a, __b);
+}
+
+#endif /* End __POWER9_VECTOR__ */
+
 /* vec_add */
 
 static __inline__ vector signed char __ATTRS_o_ai

diff --git a/test/CodeGen/builtins-ppc-p9vector.c b/test/CodeGen/builtins-ppc-p9vector.c
index 1ae4412bf5b4c4e007d8325238eaeb45a552cc79..5cbdde2341d151d0cb29668ea5cec9ad93fcd85b 100644 (file)
--- a/test/CodeGen/builtins-ppc-p9vector.c
+++ b/test/CodeGen/builtins-ppc-p9vector.c
@@ -803,3 +803,19 @@ vector unsigned __int128 test68(void) {
 // CHECK-NEXT: ret <1 x i128>
   return vec_parity_lsbb (vsi128a);
 }
+
+vector unsigned char test69(void) {
+// CHECK-BE: call <16 x i8> @llvm.ppc.altivec.vabsdub(<16 x i8> {{.+}}, <16 x i8> {{.+}})
+// CHECK: call <16 x i8> @llvm.ppc.altivec.vabsdub(<16 x i8> {{.+}}, <16 x i8> {{.+}})
+  return vec_absd(vuca, vucb);
+}
+vector unsigned short test70(void) {
+// CHECK-BE: call <8 x i16> @llvm.ppc.altivec.vabsduh(<8 x i16> {{.+}}, <8 x i16> {{.+}})
+// CHECK: call <8 x i16> @llvm.ppc.altivec.vabsduh(<8 x i16> {{.+}}, <8 x i16> {{.+}})
+  return vec_absd(vusa, vusb);
+}
+vector unsigned int test71(void) {
+// CHECK-BE: call <4 x i32> @llvm.ppc.altivec.vabsduw(<4 x i32> {{.+}}, <4 x i32> {{.+}})
+// CHECK: call <4 x i32> @llvm.ppc.altivec.vabsduw(<4 x i32> {{.+}}, <4 x i32> {{.+}})
+  return vec_absd(vuia, vuib);
+}