b32a2f418a
## Summary
Allowing implicit compatibility between `_Float16` vector types and
`half` vector types in OpenCL mode. This enables AMDGPU builtins to work
correctly across OpenCL, HIP, and C++ without requiring separate builtin
definitions.
## Problem Statement
When using AMDGPU image builtins that return half-precision vectors in
OpenCL, users encounter type incompatibility errors:
**Builtin Definition:**
`TARGET_BUILTIN(__builtin_amdgcn_image_load_1d_v4f16_i32, "V4xiiQtii",
"nc", "image-insts")`
**Test Case:**
```
typedef half half4 __attribute__((ext_vector_type(4)));
half4 test_builtin_image_load_1d_2(half4 v4f16, int i32, __amdgpu_texture_t tex) {
return __builtin_amdgcn_image_load_1d_v4f16_i32(100, i32, tex, 120, i32);
}
```
**Error:**
```
error: returning '__attribute__((__vector_size__(4 * sizeof(_Float16)))) _Float16'
(vector of 4 '_Float16' values) from a function with incompatible result type
'half4' (vector of 4 'half' values)
```
## Solution
In OpenCL, allow implicit compatibility between `_Float16` vector types
and `half` vector types. This is needed for AMDGPU builtins that may
return _Float16 vectors to work correctly with OpenCL half vector types.
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Getting the Source Code and Building LLVM
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.