llvm-project/clang/test/CodeGenOpenCL/kernel-param-alignment.cl
Nikita Popov 18834dca2d [OpenCL] Mark kernel arguments as ABI aligned
Following the discussion on D118229, this marks all pointer-typed
kernel arguments as having ABI alignment, per section 6.3.5 of
the OpenCL spec:

> For arguments to a __kernel function declared to be a pointer to
> a data type, the OpenCL compiler can assume that the pointee is
> always appropriately aligned as required by the data type.

Differential Revision: https://reviews.llvm.org/D118894
2022-02-08 16:12:51 +01:00

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886 B
Common Lisp

// RUN: %clang_cc1 %s -cl-std=CL1.2 -emit-llvm -triple x86_64-unknown-unknown -o - | FileCheck %s
// Test that pointer arguments to kernels are assumed to be ABI aligned.
struct __attribute__((packed, aligned(1))) packed {
int i32;
};
typedef __attribute__((ext_vector_type(4))) int int4;
typedef __attribute__((ext_vector_type(2))) float float2;
kernel void test(
global int *i32,
global long *i64,
global int4 *v4i32,
global float2 *v2f32,
global void *v,
global struct packed *p) {
// CHECK-LABEL: spir_kernel void @test(
// CHECK-SAME: i32* nocapture noundef align 4 %i32,
// CHECK-SAME: i64* nocapture noundef align 8 %i64,
// CHECK-SAME: <4 x i32>* nocapture noundef align 16 %v4i32,
// CHECK-SAME: <2 x float>* nocapture noundef align 8 %v2f32,
// CHECK-SAME: i8* nocapture noundef %v,
// CHECK-SAME: %struct.packed* nocapture noundef align 1 %p)
}