ae77aceba5
UniformityAnalysis offers all of the same features and much more, there is no reason left to use the legacy DAs. See RFC: https://discourse.llvm.org/t/rfc-deprecate-divergenceanalysis-legacydivergenceanalysis/69538 - Remove LegacyDivergenceAnalysis.h/.cpp - Remove DivergenceAnalysis.h/.cpp + Unit tests - Remove SyncDependenceAnalysis - it was not a real registered analysis and was only used by DAs - Remove/adjust references to the passes in the docs where applicable - Remove TTI hook associated with those passes. - Move tests to UniformityAnalysis folder. - Remove RUN lines for the DA, leave only the UA ones. - Some tests had to be adjusted/removed depending on how they used the legacy DAs. Reviewed By: foad, sameerds Differential Revision: https://reviews.llvm.org/D148116
81 lines
1.8 KiB
LLVM
81 lines
1.8 KiB
LLVM
; RUN: opt %s -mtriple amdgcn-- -passes='print<uniformity>' -disable-output 2>&1 | FileCheck %s
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define amdgpu_kernel void @divergent_cycle_1(i32 %a, i32 %b, i32 %c) {
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; CHECK-LABEL: UniformityInfo for function 'divergent_cycle_1':
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; CHECK: CYCLES ASSSUMED DIVERGENT:
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; CHECK: depth=1: entries(R P) S Q
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; CHECK: CYCLES WITH DIVERGENT EXIT:
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; CHECK: depth=2: entries(S P) Q
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; CHECK: depth=1: entries(R P) S Q
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entry:
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%cond.uni = icmp slt i32 %a, 0
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%cond.div = icmp slt i32 %tid, 0
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br i1 %cond.uni, label %P, label %R
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P:
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; CHECK: DIVERGENT: %pp.phi =
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%pp.phi = phi i32 [ %a, %entry], [ %b, %S ]
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%pp = add i32 %b, 1
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br label %Q
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Q:
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%qq = add i32 %b, 1
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br i1 %cond.div, label %S, label %R
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R:
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%rr = add i32 %b, 1
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br label %S
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S:
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; CHECK: DIVERGENT: %s.phi =
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%s.phi = phi i32 [ %qq, %Q ], [ %rr, %R ]
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%ss = add i32 %b, 1
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br i1 %cond.uni, label %exit, label %P
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exit:
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%ee = add i32 %b, 1
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ret void
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}
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define amdgpu_kernel void @uniform_cycle_1(i32 %a, i32 %b, i32 %c) {
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; CHECK-LABEL: UniformityInfo for function 'uniform_cycle_1':
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; CHECK-NOT: CYCLES ASSSUMED DIVERGENT:
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; CHECK-NOT: CYCLES WITH DIVERGENT EXIT:
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entry:
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%cond.uni = icmp slt i32 %a, 0
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%cond.div = icmp slt i32 %tid, 0
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br i1 %cond.uni, label %P, label %T
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P:
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; CHECK-NOT: DIVERGENT: %pp.phi = phi i32
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%pp.phi = phi i32 [ %a, %entry], [ %b, %T ]
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%pp = add i32 %b, 1
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br label %Q
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Q:
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%qq = add i32 %b, 1
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br i1 %cond.div, label %S, label %R
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R:
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%rr = add i32 %b, 1
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br label %S
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S:
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; CHECK: DIVERGENT: %s.phi =
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%s.phi = phi i32 [ %qq, %Q ], [ %rr, %R ]
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%ss = add i32 %b, 1
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br i1 %cond.uni, label %exit, label %T
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T:
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%tt = add i32 %b, 1
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br label %P
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exit:
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%ee = add i32 %b, 1
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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