[clang] [Clang][AMDGPU] Use unsigned data type for `__builtin_amdgcn_raw_buffer_store_*` (PR #99546)

[Matt Arsenault via cfe-commits]

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@@ -2,19 +2,19 @@
 // REQUIRES: amdgpu-registered-target
 // RUN: %clang_cc1 -triple amdgcn-unknown-unknown -target-cpu verde -emit-llvm -o - %s | FileCheck %s
 
-typedef char i8;
-typedef short i16;
-typedef int i32;
-typedef int i64 __attribute__((ext_vector_type(2)));
-typedef int i96 __attribute__((ext_vector_type(3)));
-typedef int i128 __attribute__((ext_vector_type(4)));
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+typedef unsigned int u64 __attribute__((ext_vector_type(2)));
+typedef unsigned int u96 __attribute__((ext_vector_type(3)));
+typedef unsigned int u128 __attribute__((ext_vector_type(4)));
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arsenm wrote:

v2u32/v3u32/v4u32 

https://github.com/llvm/llvm-project/pull/99546