derek.holloway
7502bf64a4
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33 lines
1.5 KiB
LLVM
33 lines
1.5 KiB
LLVM
; Verify that volatile atomic load/store are accepted and produce
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; OpAtomicLoad/OpAtomicStore. On non-Vulkan targets the volatile qualifier
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; is silently dropped; on Vulkan the Volatile memory semantics bit is set.
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; Non-Vulkan: no Volatile memory semantics.
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; RUN: llc -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s --check-prefix=NONVK
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
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; Vulkan: Volatile memory semantics (0x8000) ORed into the semantics operand.
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; RUN: llc -O0 -mtriple=spirv-unknown-vulkan1.3-compute %s -o - | FileCheck %s --check-prefix=VULKAN
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; NONVK-DAG: %[[#C514:]] = OpConstant %[[#]] 514
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; NONVK-DAG: %[[#C516:]] = OpConstant %[[#]] 516
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; NONVK: OpAtomicLoad %[[#]] %[[#]] %[[#]] %[[#C514]]
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; NONVK: OpAtomicStore %[[#]] %[[#]] %[[#C516]] %[[#]]
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; 0x8000 | 0x2 (Acquire) | 0x200 (CrossWorkgroupMemory) = 33282
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; 0x8000 | 0x4 (Release) | 0x200 (CrossWorkgroupMemory) = 33284
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; VULKAN-DAG: %[[#VA:]] = OpConstant %[[#]] 33282
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; VULKAN-DAG: %[[#VR:]] = OpConstant %[[#]] 33284
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; VULKAN: OpAtomicLoad %[[#]] %[[#]] %[[#]] %[[#VA]]
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; VULKAN: OpAtomicStore %[[#]] %[[#]] %[[#VR]] %[[#]]
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define i32 @load_volatile(ptr addrspace(1) %ptr) {
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%val = load atomic volatile i32, ptr addrspace(1) %ptr syncscope("device") acquire, align 4
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ret i32 %val
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}
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define void @store_volatile(ptr addrspace(1) %ptr, i32 %val) {
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store atomic volatile i32 %val, ptr addrspace(1) %ptr syncscope("device") release, align 4
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ret void
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}
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