================
@@ -0,0 +1,63 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --check-globals all --version 6
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -x hip -triple x86_64-unknown-linux-gnu -aux-triple
amdgcn-amd-amdhsa -emit-llvm-bc %s -o %t-host.bc
+// RUN: %clang_cc1 -x hip -triple x86_64-unknown-linux-gnu -aux-triple
amdgcn-amd-amdhsa -emit-llvm %s -o - | FileCheck %s --check-prefix=HOST
+// RUN: %clang_cc1 -x hip -triple amdgcn-amd-amdhsa -aux-triple
x86_64-unknown-linux-gnu -emit-llvm %s -fcuda-is-device -o - | FileCheck %s
--check-prefix=DEVICE
+
+#define __device__ __attribute__((device))
+
+extern "C" {
+
+//.
+// HOST: @__hip_cuid_ = global i8 0
+// HOST: @llvm.compiler.used = appending global [1 x ptr] [ptr @__hip_cuid_],
section "llvm.metadata"
+// HOST: @HostFunc = weak alias i32 (), ptr @__HostFunc
+//.
+// DEVICE: @__hip_cuid_ = addrspace(1) global i8 0
+// DEVICE: @llvm.compiler.used = appending addrspace(1) global [1 x ptr] [ptr
addrspacecast (ptr addrspace(1) @__hip_cuid_ to ptr)], section "llvm.metadata"
+// DEVICE: @One = weak alias i32 (), ptr @__One
+//.
+// HOST-LABEL: define dso_local i32 @__HostFunc(
+// HOST-SAME: ) #[[ATTR0:[0-9]+]] {
+// HOST-NEXT: [[ENTRY:.*:]]
+// HOST-NEXT: ret i32 42
+//
+int __HostFunc(void) { return 42; }
+int HostFunc(void) __attribute__ ((weak, alias("__HostFunc")));
+
+// DEVICE-LABEL: define dso_local i32 @__One(
+// DEVICE-SAME: ) #[[ATTR0:[0-9]+]] {
+// DEVICE-NEXT: [[ENTRY:.*:]]
+// DEVICE-NEXT: [[RETVAL:%.*]] = alloca i32, align 4, addrspace(5)
+// DEVICE-NEXT: [[RETVAL_ASCAST:%.*]] = addrspacecast ptr addrspace(5)
[[RETVAL]] to ptr
+// DEVICE-NEXT: ret i32 2
+//
+__device__ int __One(void) { return 2; }
+__device__ int One(void) __attribute__ ((weak, alias("__One")));
+
----------------
yxsamliu wrote:
can we add lit tests for:
1. aliasee being a host device function
2. aliasee being a constexpr function
3. aliasee being one of an overloaded device functions aliased by mangled name
https://github.com/llvm/llvm-project/pull/164326
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