a027eb4472
Implements https://github.com/llvm/wg-hlsl/blob/main/proposals/0026-symbol-visibility.md. The change is to stop using the `hlsl.export` attribute. Instead, symbols with "program linkage" in HLSL will have export linkage with default visibility, and symbols with "external linkage" in HLSL will have export linkage with hidden visibility.
64 lines
1.5 KiB
LLVM
64 lines
1.5 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.
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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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