derek.holloway
7502bf64a4
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107 lines
3.1 KiB
LLVM
107 lines
3.1 KiB
LLVM
; RUN: opt -S -dxil-finalize-linkage -mtriple=dxil-unknown-shadermodel6.5-compute %s | FileCheck %s
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; RUN: llc %s --filetype=asm -o - | FileCheck %s --check-prefixes=CHECK-LLC
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target triple = "dxilv1.5-pc-shadermodel6.5-compute"
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; DXILFinalizeLinkage changes linkage of all functions that are hidden to
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; internal, converts private globals to internal linkage, and converts external globals
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; with no usage to internal linkage.
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; CHECK: @switch.table = internal unnamed_addr constant [4 x i32]
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@switch.table = private unnamed_addr constant [4 x i32] [i32 1, i32 257, i32 65793, i32 16843009], align 4
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; CHECK: @private_array = internal constant [3 x float]
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@private_array = private constant [3 x float] [float 1.0, float 2.0, float 3.0], align 4
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; CHECK: @private_var = internal global i32
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@private_var = private global i32 1, align 4
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; Internal global should remain internal
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; CHECK: @internal_var = internal global i32
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@internal_var = internal global i32 1, align 4
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; External global should remain external
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; CHECK: @external_var = external global i32
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@external_var = external global i32, align 4
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; Hidden global should remain hidden
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; CHECK: @hidden_var = hidden global i32
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@hidden_var = hidden global i32 1, align 4
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; Running the whole pipeline should remove unused global variables
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; CHECK: @aTile = internal addrspace(3) global
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; CHECK-LLC-NOT: @aTile
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@aTile = hidden addrspace(3) global [4 x [1 x i32]] zeroinitializer, align 4
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; CHECK: @bTile = internal addrspace(3) global
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; CHECK-LLC-NOT: @bTile
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@bTile = hidden addrspace(3) global [1 x [1 x i32]] zeroinitializer, align 4
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define void @anchor_function() #0 {
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entry:
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%0 = load i32, ptr @switch.table, align 4
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%1 = load [3 x float], ptr @private_array, align 4
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%2 = load i32, ptr @private_var, align 4
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%3 = load i32, ptr @internal_var, align 4
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%4 = load i32, ptr @external_var, align 4
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%5 = load i32, ptr @hidden_var, align 4
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ret void
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}
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; CHECK-NOT: define internal void @"?f1@@YAXXZ"()
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define void @"?f1@@YAXXZ"() #0 {
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entry:
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ret void
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}
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; CHECK: define internal void @"?f2@@YAXXZ"()
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define hidden void @"?f2@@YAXXZ"() #0 {
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entry:
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ret void
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}
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; CHECK: define internal void @"?f3@@YAXXZ"()
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define hidden void @"?f3@@YAXXZ"() #0 {
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entry:
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ret void
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}
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; CHECK: define internal void @"?foo@@YAXXZ"()
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define hidden void @"?foo@@YAXXZ"() #0 {
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entry:
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call void @"?f2@@YAXXZ"() #3
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ret void
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}
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; Exported function - do not change linkage
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; CHECK: define void @"?bar@@YAXXZ"()
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define void @"?bar@@YAXXZ"() #0 {
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entry:
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call void @"?f3@@YAXXZ"() #3
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ret void
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}
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; CHECK: define internal void @"?main@@YAXXZ"() #0
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define internal void @"?main@@YAXXZ"() #0 {
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entry:
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call void @"?foo@@YAXXZ"() #2
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call void @"?bar@@YAXXZ"() #2
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ret void
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}
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; Entry point function - do not change linkage
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; CHECK: define void @main() #1
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define void @main() #1 {
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entry:
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call void @"?main@@YAXXZ"()
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ret void
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}
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attributes #0 = { convergent noinline nounwind optnone}
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attributes #1 = { convergent "hlsl.numthreads"="4,1,1" "hlsl.shader"="compute"}
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attributes #2 = { convergent }
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; Make sure "hlsl.export" attribute is stripped by llc
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; CHECK-LLC-NOT: "hlsl.export"
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