derek.holloway
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57 lines
2.8 KiB
Common Lisp
57 lines
2.8 KiB
Common Lisp
// RUN: %clang_cc1 %s -triple spir -cl-std=CL1.2 -emit-llvm-bc -fdeclare-opencl-builtins -o %t.bc
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// RUN: llvm-spirv %t.bc -o %t.spv
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// RUN: spirv-val %t.spv
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// RUN: llvm-spirv %t.spv -to-text -o - | FileCheck %s --check-prefixes=CHECK-SPIRV,CHECK-SPIRV-TYPED-PTRS
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// RUN: llvm-spirv %t.spv -r --spirv-target-env=CL1.2 -o - | llvm-dis -o - | FileCheck %s --check-prefix=CHECK-LLVM
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// RUN: llvm-spirv %t.bc -o %t.spv --spirv-ext=+SPV_KHR_untyped_pointers
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// RUN: spirv-val %t.spv
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// RUN: llvm-spirv %t.spv -to-text -o - | FileCheck %s --check-prefixes=CHECK-SPIRV,CHECK-SPIRV-UNTYPED-PTRS
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// RUN: llvm-spirv %t.spv -r --spirv-target-env=CL1.2 -o - | llvm-dis -o - | FileCheck %s --check-prefix=CHECK-LLVM
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// This test checks that the translator is capable to correctly translate
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// atomic_cmpxchg OpenCL C 1.2 built-in function [1] into corresponding SPIR-V
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// instruction and vice-versa.
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__kernel void test_atomic_cmpxchg(__global int *p, int cmp, int val) {
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atomic_cmpxchg(p, cmp, val);
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__global unsigned int *up = (__global unsigned int *)p;
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unsigned int ucmp = (unsigned int)cmp;
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unsigned int uval = (unsigned int)val;
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atomic_cmpxchg(up, ucmp, uval);
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}
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// CHECK-SPIRV: EntryPoint [[#]] [[TEST:[0-9]+]] "test_atomic_cmpxchg"
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// CHECK-SPIRV-DAG: TypeInt [[UINT:[0-9]+]] 32 0
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// CHECK-SPIRV-TYPED-PTRS-DAG: TypePointer [[UINT_PTR:[0-9]+]] 5 [[UINT]]
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// CHECK-SPIRV-UNTYPED-PTRS-DAG: TypeUntypedPointerKHR [[UINT_PTR:[0-9]+]] 5
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//
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// In SPIR-V, atomic_cmpxchg is represented as OpAtomicCompareExchange [2],
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// which also includes memory scope and two memory semantic arguments. The
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// translator applies some default memory order for it and therefore, constants
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// below include a bit more information than original source
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//
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// 0x2 Workgroup
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// CHECK-SPIRV-DAG: Constant [[UINT]] [[WORKGROUP_SCOPE:[0-9]+]] 2
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//
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// 0x0 Relaxed | 0x200 CrossWorkgroupMemory
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// CHECK-SPIRV-DAG: Constant [[UINT]] [[RELAXED:[0-9]+]] 512
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//
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// CHECK-SPIRV: Function {{[0-9]+}} [[TEST]]
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// CHECK-SPIRV: FunctionParameter [[UINT_PTR]] [[PTR:[0-9]+]]
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// CHECK-SPIRV: FunctionParameter [[UINT]] [[CMP:[0-9]+]]
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// CHECK-SPIRV: FunctionParameter [[UINT]] [[VAL:[0-9]+]]
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// CHECK-SPIRV: AtomicCompareExchange [[UINT]] {{[0-9]+}} [[PTR]] [[WORKGROUP_SCOPE]] [[RELAXED]] [[RELAXED]] [[VAL]] [[CMP]]
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// CHECK-SPIRV: AtomicCompareExchange [[UINT]] {{[0-9]+}} [[PTR]] [[WORKGROUP_SCOPE]] [[RELAXED]] [[RELAXED]] [[VAL]] [[CMP]]
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//
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//
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// CHECK-LLVM-LABEL: define spir_kernel void @test_atomic_cmpxchg
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// CHECK-LLVM: call spir_func i32 @_Z14atomic_cmpxchgPU3AS1Viii(
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// TODO: is it an issue that we lost call to @_Z14atomic_cmpxchgPU3AS1jjj here?
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// CHECK-LLVM: call spir_func i32 @_Z14atomic_cmpxchgPU3AS1Viii(
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// References:
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// [1]: https://www.khronos.org/registry/OpenCL/sdk/2.0/docs/man/xhtml/atomic_cmpxchg.html
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// [2]: https://www.khronos.org/registry/spir-v/specs/unified1/SPIRV.html#OpAtomicCompareExchange
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