[clang] 10cc5bc - [PowerPC] Add more missing overloads to altivec.h

[Nemanja Ivanovic via cfe-commits]

Author: Nemanja Ivanovic
Date: 2021-03-22T23:09:41-05:00
New Revision: 10cc5bcd868c433f9a781aef82178b04e98bd098

URL: https://github.com/llvm/llvm-project/commit/10cc5bcd868c433f9a781aef82178b04e98bd098
DIFF: https://github.com/llvm/llvm-project/commit/10cc5bcd868c433f9a781aef82178b04e98bd098.diff

LOG: [PowerPC] Add more missing overloads to altivec.h

Add vec_permi as a synonym for vec_xxpermdi (but only for
doubleword vectors).

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 7e154c9b5219..cabb7b225b84 100644
--- a/clang/lib/Headers/altivec.h
+++ b/clang/lib/Headers/altivec.h
@@ -12589,6 +12589,16 @@ static __inline__ void __ATTRS_o_ai vec_vsx_st(vector unsigned char __a,
 #ifdef __VSX__
 #define vec_xxpermdi __builtin_vsx_xxpermdi
 #define vec_xxsldwi __builtin_vsx_xxsldwi
+#define vec_permi(__a, __b, __c)                                               \
+  _Generic((__a), vector signed long long                                      \
+           : __builtin_shufflevector((__a), (__b), (((__c) >> 1) & 0x1),       \
+                                     (((__c)&0x1) + 2)),                       \
+             vector unsigned long long                                         \
+           : __builtin_shufflevector((__a), (__b), (((__c) >> 1) & 0x1),       \
+                                     (((__c)&0x1) + 2)),                       \
+             vector double                                                     \
+           : __builtin_shufflevector((__a), (__b), (((__c) >> 1) & 0x1),       \
+                                     (((__c)&0x1) + 2)))
 #endif
 
 /* vec_xor */

diff  --git a/clang/test/CodeGen/builtins-ppc-vsx.c b/clang/test/CodeGen/builtins-ppc-vsx.c
index 7bfecb13a47e..f6157cf46778 100644
--- a/clang/test/CodeGen/builtins-ppc-vsx.c
+++ b/clang/test/CodeGen/builtins-ppc-vsx.c
@@ -1976,6 +1976,22 @@ res_vuc = vec_xxpermdi(vuc, vuc, 1);
 // CHECK: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 0, i32 3>
 // CHECK-LE: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 0, i32 3>
 
+res_vd = vec_permi(vd, vd, 0);
+// CHECK: shufflevector <2 x double> %{{[0-9]+}}, <2 x double> %{{[0-9]+}}, <2 x i32> <i32 0, i32 2>
+// CHECK-LE: shufflevector <2 x double> %{{[0-9]+}}, <2 x double> %{{[0-9]+}}, <2 x i32> <i32 0, i32 2>
+
+res_vsll = vec_permi(vsll, vsll, 2);
+// CHECK: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 1, i32 2>
+// CHECK-LE: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 1, i32 2>
+
+res_vull = vec_permi(vull, vull, 3);
+// CHECK: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 1, i32 3>
+// CHECK-LE: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 1, i32 3>
+
+res_vull = vec_permi(vbll, vbll, 3);
+// CHECK: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 1, i32 3>
+// CHECK-LE: shufflevector <2 x i64> %{{[0-9]+}}, <2 x i64> %{{[0-9]+}}, <2 x i32> <i32 1, i32 3>
+
 res_vd = vec_xxsldwi(vd, vd, 0);
 // CHECK: shufflevector <4 x i32> %{{[0-9]+}}, <4 x i32> %{{[0-9]+}}, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
 // CHECK-LE: shufflevector <4 x i32> %{{[0-9]+}}, <4 x i32> %{{[0-9]+}}, <4 x i32> <i32 0, i32 1, i32 2, i32 3>