[clang] [LoongArch][Clang] Make the parameters and return value of {x,}vshuf.b builtins `signed char` vectors (PR #114512)

[Xi Ruoyao via cfe-commits]

https://github.com/xry111 updated https://github.com/llvm/llvm-project/pull/114512

>From c1b7b79e7027ad7fed410c1783113228173843f1 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111 at xry111.site>
Date: Fri, 1 Nov 2024 00:17:44 +0800
Subject: [PATCH] [LoongArch][Clang] Make the parameters and return value of
 {x,}vshuf.b builtins `signed char` vectors

The lsxintrin.h and and lasxintrin.h headers uses `signed char` vectors
instead of `unsigned char` vectors.  GCC also uses `signed char` for
them, so align their definition with the headers and GCC.
---
 clang/include/clang/Basic/BuiltinsLoongArchLASX.def | 2 +-
 clang/include/clang/Basic/BuiltinsLoongArchLSX.def  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/include/clang/Basic/BuiltinsLoongArchLASX.def b/clang/include/clang/Basic/BuiltinsLoongArchLASX.def
index 477f704860873c..e6c41dd0974948 100644
--- a/clang/include/clang/Basic/BuiltinsLoongArchLASX.def
+++ b/clang/include/clang/Basic/BuiltinsLoongArchLASX.def
@@ -935,7 +935,7 @@ TARGET_BUILTIN(__builtin_lasx_xvilvh_h, "V16sV16sV16s", "nc", "lasx")
 TARGET_BUILTIN(__builtin_lasx_xvilvh_w, "V8iV8iV8i", "nc", "lasx")
 TARGET_BUILTIN(__builtin_lasx_xvilvh_d, "V4LLiV4LLiV4LLi", "nc", "lasx")
 
-TARGET_BUILTIN(__builtin_lasx_xvshuf_b, "V32UcV32UcV32UcV32Uc", "nc", "lasx")
+TARGET_BUILTIN(__builtin_lasx_xvshuf_b, "V32ScV32ScV32ScV32Sc", "nc", "lasx")
 
 TARGET_BUILTIN(__builtin_lasx_xvshuf_h, "V16sV16sV16sV16s", "nc", "lasx")
 TARGET_BUILTIN(__builtin_lasx_xvshuf_w, "V8iV8iV8iV8i", "nc", "lasx")
diff --git a/clang/include/clang/Basic/BuiltinsLoongArchLSX.def b/clang/include/clang/Basic/BuiltinsLoongArchLSX.def
index e847985f390367..ded6519f3ef16c 100644
--- a/clang/include/clang/Basic/BuiltinsLoongArchLSX.def
+++ b/clang/include/clang/Basic/BuiltinsLoongArchLSX.def
@@ -910,7 +910,7 @@ TARGET_BUILTIN(__builtin_lsx_vilvh_h, "V8sV8sV8s", "nc", "lsx")
 TARGET_BUILTIN(__builtin_lsx_vilvh_w, "V4iV4iV4i", "nc", "lsx")
 TARGET_BUILTIN(__builtin_lsx_vilvh_d, "V2LLiV2LLiV2LLi", "nc", "lsx")
 
-TARGET_BUILTIN(__builtin_lsx_vshuf_b, "V16UcV16UcV16UcV16Uc", "nc", "lsx")
+TARGET_BUILTIN(__builtin_lsx_vshuf_b, "V16ScV16ScV16ScV16Sc", "nc", "lsx")
 
 TARGET_BUILTIN(__builtin_lsx_vshuf_h, "V8sV8sV8sV8s", "nc", "lsx")
 TARGET_BUILTIN(__builtin_lsx_vshuf_w, "V4iV4iV4iV4i", "nc", "lsx")