3cfd0c0d36
This change adds support for correctly lowering the `__scoped` Clang builtins, and corresponding scoped LLVM instructions. These were previously unconditionally lowered to Device scope, which is possibly incorrect. Furthermore, the default / implicit scope is changed from Device (an OpenCL assumption) to AllSvmDevices (aka System), since the SPIR-V BE is not OpenCL specific / can ingest IR coming from other language front-ends. OpenCL defaulting to Device scope is now reflected in the front-end handling of atomic ops, which seems preferable.
39 lines
1.7 KiB
LLVM
39 lines
1.7 KiB
LLVM
; The goal of the test case is to ensure that the Backend doesn't crash on the stage
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; of type inference. Result SPIR-V is not expected to be valid from the perspective
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; of spirv-val in this case, because there is a difference of accepted return types
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; between atomicrmw and OpAtomicExchange.
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; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
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; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s
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; CHECK-DAG: %[[#LongTy:]] = OpTypeInt 64 0
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; CHECK-DAG: %[[#PtrLongTy:]] = OpTypePointer CrossWorkgroup %[[#LongTy]]
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; CHECK-DAG: %[[#IntTy:]] = OpTypeInt 32 0
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; CHECK-DAG: %[[#Scope:]] = OpConstantNull %[[#IntTy]]
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; CHECK-DAG: %[[#MemSem:]] = OpConstant %[[#IntTy]] 8
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; CHECK-DAG: %[[#PtrPtrLongTy:]] = OpTypePointer CrossWorkgroup %[[#PtrLongTy]]
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; CHECK: OpFunction
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; CHECK: %[[#Arg1:]] = OpFunctionParameter %[[#PtrPtrLongTy]]
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; CHECK: %[[#Arg2:]] = OpFunctionParameter %[[#PtrLongTy]]
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; CHECK: OpAtomicExchange %[[#PtrLongTy]] %[[#Arg1]] %[[#Scope]] %[[#MemSem]] %[[#Arg2]]
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; CHECK: OpFunctionEnd
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define dso_local spir_func void @test1(ptr addrspace(1) %arg1, ptr addrspace(1) byval(i64) %arg_ptr) {
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entry:
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%r = atomicrmw xchg ptr addrspace(1) %arg1, ptr addrspace(1) %arg_ptr acq_rel
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ret void
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}
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; CHECK: OpFunction
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; CHECK: %[[#Arg3:]] = OpFunctionParameter %[[#PtrLongTy]]
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; CHECK: %[[#Arg4:]] = OpFunctionParameter %[[#LongTy]]
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; CHECK: OpAtomicExchange %[[#LongTy]] %[[#Arg3]] %[[#Scope]] %[[#MemSem]] %[[#Arg4]]
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; CHECK: OpFunctionEnd
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define dso_local spir_func void @test2(ptr addrspace(1) %arg1, i64 %arg_ptr) {
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entry:
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%r = atomicrmw xchg ptr addrspace(1) %arg1, i64 %arg_ptr acq_rel
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ret void
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}
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