derek.holloway
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59 lines
1.4 KiB
LLVM
59 lines
1.4 KiB
LLVM
; RUN: split-file %s %t
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; RUN: opt -S --dxil-translate-metadata %t/not-distinct.ll 2>&1 | FileCheck %t/not-distinct.ll
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; RUN: opt -S --dxil-translate-metadata %t/not-md.ll 2>&1 | FileCheck %t/not-md.ll
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; Test that DXIL incompatible loop metadata is stripped
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;--- not-distinct.ll
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; Ensure it is stripped because it is not provided a distinct loop parent
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; CHECK-NOT: {!"llvm.loop.unroll.disable"}
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target triple = "dxilv1.0-unknown-shadermodel6.0-library"
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define void @example_loop(i32 %n) {
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entry:
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br label %loop.header
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loop.header:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop.body ]
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%cmp = icmp slt i32 %i, %n
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br i1 %cmp, label %loop.body, label %exit
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loop.body:
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%i.next = add nsw i32 %i, 1
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br label %loop.header, !llvm.loop !1
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exit:
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ret void
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}
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!1 = !{!"llvm.loop.unroll.disable"} ; first node must be a distinct self-reference
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;--- not-md.ll
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target triple = "dxilv1.0-unknown-shadermodel6.0-library"
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define void @example_loop(i32 %n) {
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entry:
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br label %loop.header
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loop.header:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop.body ]
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%cmp = icmp slt i32 %i, %n
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br i1 %cmp, label %loop.body, label %exit
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loop.body:
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%i.next = add nsw i32 %i, 1
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; CHECK: br label %loop.header, !llvm.loop ![[#LOOP_MD:]]
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br label %loop.header, !llvm.loop !1
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exit:
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ret void
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}
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; CHECK: ![[#LOOP_MD:]] = distinct !{![[#LOOP_MD]]}
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!1 = !{!1, i32 0} ; second operand is not a metadata node
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