[clang] 6b6ea93 - [PowerPC][altivec] Correct modulo number of vec_promote on vector char
Kai Luo via cfe-commits
cfe-commits at lists.llvm.org
Tue Aug 22 18:58:39 PDT 2023
Author: Kai Luo
Date: 2023-08-23T01:58:36Z
New Revision: 6b6ea93125bd834cae22149e18b742d498dc79a3
URL: https://github.com/llvm/llvm-project/commit/6b6ea93125bd834cae22149e18b742d498dc79a3
DIFF: https://github.com/llvm/llvm-project/commit/6b6ea93125bd834cae22149e18b742d498dc79a3.diff
LOG: [PowerPC][altivec] Correct modulo number of vec_promote on vector char
According to https://www.ibm.com/docs/en/xl-c-and-cpp-linux/16.1.1?topic=functions-vec-promote, the index should be input modulo the number of elements in the vector. When the type is `vector char`, the number of elements should be 16.
Reviewed By: qiucf
Differential Revision: https://reviews.llvm.org/D158484
Added:
Modified:
clang/lib/Headers/altivec.h
clang/test/CodeGen/PowerPC/builtins-ppc-vsx.c
Removed:
################################################################################
diff --git a/clang/lib/Headers/altivec.h b/clang/lib/Headers/altivec.h
index c036f5ebba580e..44b5a24de89f1a 100644
--- a/clang/lib/Headers/altivec.h
+++ b/clang/lib/Headers/altivec.h
@@ -14648,14 +14648,14 @@ static __inline__ void __ATTRS_o_ai vec_stvrxl(vector float __a, int __b,
static __inline__ vector signed char __ATTRS_o_ai vec_promote(signed char __a,
int __b) {
vector signed char __res = (vector signed char)(0);
- __res[__b & 0x7] = __a;
+ __res[__b & 0xf] = __a;
return __res;
}
static __inline__ vector unsigned char __ATTRS_o_ai
vec_promote(unsigned char __a, int __b) {
vector unsigned char __res = (vector unsigned char)(0);
- __res[__b & 0x7] = __a;
+ __res[__b & 0xf] = __a;
return __res;
}
diff --git a/clang/test/CodeGen/PowerPC/builtins-ppc-vsx.c b/clang/test/CodeGen/PowerPC/builtins-ppc-vsx.c
index 89c361454a421b..cca2a8b2f55bd4 100644
--- a/clang/test/CodeGen/PowerPC/builtins-ppc-vsx.c
+++ b/clang/test/CodeGen/PowerPC/builtins-ppc-vsx.c
@@ -2250,18 +2250,18 @@ res_vull = vec_promote(ull, 0);
res_vsc = vec_promote(asc[0], 8);
// CHECK: store <16 x i8> zeroinitializer
-// CHECK: [[IDX:%.*]] = and i32 {{.*}}, 7
+// CHECK: [[IDX:%.*]] = and i32 {{.*}}, 15
// CHECK: insertelement <16 x i8> {{.*}}, i8 {{.*}}, i32 [[IDX]]
// CHECK-LE: store <16 x i8> zeroinitializer
-// CHECK-LE: [[IDX:%.*]] = and i32 {{.*}}, 7
+// CHECK-LE: [[IDX:%.*]] = and i32 {{.*}}, 15
// CHECK-LE: insertelement <16 x i8> {{.*}}, i8 {{.*}}, i32 [[IDX]]
res_vuc = vec_promote(auc[0], 8);
// CHECK: store <16 x i8> zeroinitializer
-// CHECK: [[IDX:%.*]] = and i32 {{.*}}, 7
+// CHECK: [[IDX:%.*]] = and i32 {{.*}}, 15
// CHECK: insertelement <16 x i8> {{.*}}, i8 {{.*}}, i32 [[IDX]]
// CHECK-LE: store <16 x i8> zeroinitializer
-// CHECK-LE: [[IDX:%.*]] = and i32 {{.*}}, 7
+// CHECK-LE: [[IDX:%.*]] = and i32 {{.*}}, 15
// CHECK-LE: insertelement <16 x i8> {{.*}}, i8 {{.*}}, i32 [[IDX]]
}
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