[clang] 3bcd0ec - [PowerPC] Add vec_roundc as alias for vec_rint in altivec.h

[Nemanja Ivanovic via cfe-commits]

Author: Nemanja Ivanovic
Date: 2021-04-22T05:31:38-05:00
New Revision: 3bcd0ece43bd117b9931d2b010b50884aa74870a

URL: https://github.com/llvm/llvm-project/commit/3bcd0ece43bd117b9931d2b010b50884aa74870a
DIFF: https://github.com/llvm/llvm-project/commit/3bcd0ece43bd117b9931d2b010b50884aa74870a.diff

LOG: [PowerPC] Add vec_roundc as alias for vec_rint in altivec.h

For compatibility with XLC, add these overloads.

Added: 
    

Modified: 
    clang/lib/Headers/altivec.h
    clang/test/CodeGen/builtins-ppc-vsx.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Headers/altivec.h b/clang/lib/Headers/altivec.h
index 81e4cb686d8d..878fe666dad5 100644
--- a/clang/lib/Headers/altivec.h
+++ b/clang/lib/Headers/altivec.h
@@ -8150,6 +8150,16 @@ static __inline__ vector double __ATTRS_o_ai vec_rint(vector double __a) {
   return __builtin_vsx_xvrdpic(__a);
 }
 
+/* vec_roundc */
+
+static __inline__ vector float __ATTRS_o_ai vec_roundc(vector float __a) {
+  return __builtin_vsx_xvrspic(__a);
+}
+
+static __inline__ vector double __ATTRS_o_ai vec_roundc(vector double __a) {
+  return __builtin_vsx_xvrdpic(__a);
+}
+
 /* vec_nearbyint */
 
 static __inline__ vector float __ATTRS_o_ai vec_nearbyint(vector float __a) {

diff  --git a/clang/test/CodeGen/builtins-ppc-vsx.c b/clang/test/CodeGen/builtins-ppc-vsx.c
index f6157cf46778..5389979722d8 100644
--- a/clang/test/CodeGen/builtins-ppc-vsx.c
+++ b/clang/test/CodeGen/builtins-ppc-vsx.c
@@ -996,6 +996,14 @@ void test1() {
 // CHECK: call <4 x float> @llvm.ppc.vsx.xvrsqrtesp(<4 x float> %{{[0-9]+}})
 // CHECK-LE: call <4 x float> @llvm.ppc.vsx.xvrsqrtesp(<4 x float> %{{[0-9]+}})
 
+  res_vf = vec_roundc(vf);
+// CHECK: call <4 x float> @llvm.rint.v4f32(<4 x float> %{{[0-9]+}})
+// CHECK-LE: call <4 x float> @llvm.rint.v4f32(<4 x float> %{{[0-9]+}})
+
+  res_vd = vec_roundc(vd);
+// CHECK: call <2 x double> @llvm.rint.v2f64(<2 x double> %{{[0-9]+}})
+// CHECK-LE: call <2 x double> @llvm.rint.v2f64(<2 x double> %{{[0-9]+}})
+
   res_vd = vec_rsqrte(vd);
 // CHECK: call <2 x double> @llvm.ppc.vsx.xvrsqrtedp(<2 x double> %{{[0-9]+}})
 // CHECK-LE: call <2 x double> @llvm.ppc.vsx.xvrsqrtedp(<2 x double> %{{[0-9]+}})