derek.holloway
7502bf64a4
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31 lines
1.6 KiB
LLVM
31 lines
1.6 KiB
LLVM
; RUN: llc -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
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; Regression test for issue https://github.com/llvm/llvm-project/issues/152863
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; Ensure OpAtomicCompareExchange returns the correct i64 type when used in phi nodes.
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; Previously, this would generate invalid SPIR-V where the atomic operation returned
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; uint (32-bit) but the phi node expected ulong (64-bit), causing validation errors.
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; CHECK-SPIRV-DAG: %[[#Long:]] = OpTypeInt 64 0
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; CHECK-SPIRV-DAG: %[[#Ptr:]] = OpTypePointer CrossWorkgroup %[[#Long]]
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; CHECK-SPIRV-DAG: %[[#Zero64:]] = OpConstantNull %[[#Long]]
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; Verify that both the phi node and atomic operation use the same i64 type
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; CHECK-SPIRV: %[[#ValuePhi:]] = OpPhi %[[#Long]] %[[#Zero64]] %[[#]] %[[#AtomicResult:]] %[[#]]
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; CHECK-SPIRV: %[[#AtomicResult]] = OpAtomicCompareExchange %[[#Long]] %[[#]] %[[#]] %[[#]] %[[#]] %[[#Zero64]] %[[#ValuePhi]]
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target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"
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target triple = "spirv64-unknown-unknown"
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declare i64 @_Z14atomic_cmpxchgPU8CLglobalVlll(ptr addrspace(1), i64, i64)
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define spir_kernel void @test_atomic_cmpxchg_phi(ptr addrspace(1) %ptr) {
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conversion:
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br label %L6
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L6: ; preds = %L6, %conversion
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%value_phi = phi i64 [ 0, %conversion ], [ %1, %L6 ]
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%1 = call i64 @_Z14atomic_cmpxchgPU8CLglobalVlll(ptr addrspace(1) %ptr, i64 %value_phi, i64 0)
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br label %L6
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}
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