| ; RUN: llc -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV | |
| ; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %} | |
| ; Regression test for issue https://github.com/llvm/llvm-project/issues/152863 | |
| ; Ensure OpAtomicCompareExchange returns the correct i64 type when used in phi nodes. | |
| ; Previously, this would generate invalid SPIR-V where the atomic operation returned | |
| ; uint (32-bit) but the phi node expected ulong (64-bit), causing validation errors. | |
| ; CHECK-SPIRV-DAG: %[[#Long:]] = OpTypeInt 64 0 | |
| ; CHECK-SPIRV-DAG: %[[#Ptr:]] = OpTypePointer CrossWorkgroup %[[#Long]] | |
| ; CHECK-SPIRV-DAG: %[[#Zero64:]] = OpConstantNull %[[#Long]] | |
| ; Verify that both the phi node and atomic operation use the same i64 type | |
| ; CHECK-SPIRV: %[[#ValuePhi:]] = OpPhi %[[#Long]] %[[#Zero64]] %[[#]] %[[#AtomicResult:]] %[[#]] | |
| ; CHECK-SPIRV: %[[#AtomicResult]] = OpAtomicCompareExchange %[[#Long]] %[[#]] %[[#]] %[[#]] %[[#]] %[[#Zero64]] %[[#ValuePhi]] | |
| target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1" | |
| target triple = "spirv64-unknown-unknown" | |
| declare i64 @_Z14atomic_cmpxchgPU8CLglobalVlll(ptr addrspace(1), i64, i64) | |
| define spir_kernel void @test_atomic_cmpxchg_phi(ptr addrspace(1) %ptr) { | |
| conversion: | |
| br label %L6 | |
| L6: ; preds = %L6, %conversion | |
| %value_phi = phi i64 [ 0, %conversion ], [ %1, %L6 ] | |
| %1 = call i64 @_Z14atomic_cmpxchgPU8CLglobalVlll(ptr addrspace(1) %ptr, i64 %value_phi, i64 0) | |
| br label %L6 | |
| } |