4ae7348513
This isn't reachable today but will come into play once we reorder passes for #147352 and #147351. Note that the `CBufferRowIntrin` helper struct is copied from the `DXILCBufferAccess` pass, but it will be removed from there when we simplify that pass in #147351
47 lines
2.2 KiB
LLVM
47 lines
2.2 KiB
LLVM
; RUN: opt -S -dxil-resource-access -mtriple=dxil %s | FileCheck %s
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;
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; Tests for dynamic indices into arrays in cbuffers.
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; cbuffer CB : register(b0) {
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; uint s[10]; // offset 0, size 4 (+12) * 10
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; uint t[12]; // offset 160, size 4 (+12) * 12
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; }
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%__cblayout_CB = type <{ <{ [9 x <{ i32, target("dx.Padding", 12) }>], i32 }>, target("dx.Padding", 12), <{ [11 x <{ i32, target("dx.Padding", 12) }>], i32 }> }>
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@CB.cb = local_unnamed_addr global target("dx.CBuffer", %__cblayout_CB) poison
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; CHECK: define void @f
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define void @f(ptr %dst, i32 %idx) {
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entry:
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%CB.cb_h = tail call target("dx.CBuffer", %__cblayout_CB) @llvm.dx.resource.handlefromimplicitbinding(i32 1, i32 0, i32 1, i32 0, ptr null)
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store target("dx.CBuffer", %__cblayout_CB) %CB.cb_h, ptr @CB.cb, align 4
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; CHECK: [[CB:%.*]] = load target("dx.CBuffer", %__cblayout_CB), ptr @CB.cb
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%CB.cb = load target("dx.CBuffer", %__cblayout_CB), ptr @CB.cb, align 4
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;; s[idx]
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;
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; CHECK: [[LOAD:%.*]] = call { i32, i32, i32, i32 } @llvm.dx.resource.load.cbufferrow.4.{{.*}}(target("dx.CBuffer", %__cblayout_CB) [[CB]], i32 %idx)
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; CHECK: [[X:%.*]] = extractvalue { i32, i32, i32, i32 } [[LOAD]], 0
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; CHECK: store i32 [[X]], ptr %dst
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%s_ptr = call ptr addrspace(2) @llvm.dx.resource.getpointer(target("dx.CBuffer", %__cblayout_CB) %CB.cb, i32 0)
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%s_gep = getelementptr <{ i32, target("dx.Padding", 12) }>, ptr addrspace(2) %s_ptr, i32 %idx
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%s_load = load i32, ptr addrspace(2) %s_gep, align 4
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store i32 %s_load, ptr %dst, align 4
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;; t[idx]
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;
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; CHECK: [[T_IDX:%.*]] = add i32 10, %idx
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; CHECK: [[LOAD:%.*]] = call { i32, i32, i32, i32 } @llvm.dx.resource.load.cbufferrow.4.{{.*}}(target("dx.CBuffer", %__cblayout_CB) [[CB]], i32 [[T_IDX]])
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; CHECK: [[X:%.*]] = extractvalue { i32, i32, i32, i32 } [[LOAD]], 0
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; CHECK: [[PTR:%.*]] = getelementptr inbounds nuw i8, ptr %dst, i32 4
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; CHECK: store i32 [[X]], ptr [[PTR]]
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%t_ptr = call ptr addrspace(2) @llvm.dx.resource.getpointer(target("dx.CBuffer", %__cblayout_CB) %CB.cb, i32 160)
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%t_gep = getelementptr <{ i32, target("dx.Padding", 12) }>, ptr addrspace(2) %t_ptr, i32 %idx
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%t_load = load i32, ptr addrspace(2) %t_gep, align 4
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%t.i = getelementptr inbounds nuw i8, ptr %dst, i32 4
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store i32 %t_load, ptr %t.i, align 4
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ret void
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}
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