53326ee0cf
Block sorting was assuming reducible CFG. Meaning we always had a best node to continue with. Irreducible CFG makes breaks this assumption, so the algorithm looped indefinitely because no node was a valid candidate. Fixes #116692 --------- Signed-off-by: Nathan Gauër <brioche@google.com>
60 lines
2.1 KiB
LLVM
60 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}
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target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"
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target triple = "spirv-unknown-vulkan1.3-compute"
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; Function Attrs: convergent noinline norecurse nounwind optnone
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define spir_func noundef i32 @_Z7processv() #0 {
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; CHECK: %[[#entry:]] = OpLabel
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; CHECK: OpBranch %[[#header:]]
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entry:
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%0 = call token @llvm.experimental.convergence.entry()
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%1 = alloca i32, align 4
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br label %header
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; CHECK: %[[#header]] = OpLabel
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; CHECK: OpLoopMerge %[[#merge:]] %[[#continue:]] None
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; CHECK: OpBranchConditional %[[#]] %[[#body:]] %[[#merge]]
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header:
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%2 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
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br i1 true, label %body, label %merge
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; CHECK: %[[#merge]] = OpLabel
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; CHECK: OpReturnValue %[[#]]
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merge:
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ret i32 0
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; CHECK: %[[#body]] = OpLabel
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; CHECK: OpBranch %[[#continue]]
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body:
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store i32 0, ptr %1
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br label %continue
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continue:
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br label %header
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; CHECK: %[[#continue]] = OpLabel
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; CHECK: OpBranch %[[#header]]
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}
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; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
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declare token @llvm.experimental.convergence.entry() #1
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; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
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declare token @llvm.experimental.convergence.loop() #1
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attributes #0 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }
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attributes #2 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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attributes #3 = { convergent }
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!llvm.module.flags = !{!0, !1, !2}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 4, !"dx.disable_optimizations", i32 1}
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!2 = !{i32 7, !"frame-pointer", i32 2}
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