derek.holloway
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65 lines
2.5 KiB
LLVM
65 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=indvars -indvars-predicate-loops=1 -S | FileCheck %s
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; Loop with body using loop convergence token should be skipped by IndVarSimplify.
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declare token @llvm.experimental.convergence.entry() #0
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define void @loop(i32 %tid, ptr %array) #0 {
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; CHECK-LABEL: @loop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = tail call token @llvm.experimental.convergence.entry()
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; CHECK-NEXT: br label [[FOR_COND_I:%.*]]
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; CHECK: for.cond.i:
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; CHECK-NEXT: [[I_0_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC_I:%.*]], [[FOR_BODY_I:%.*]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[TMP0]]) ]
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; CHECK-NEXT: [[CMP_I:%.*]] = icmp samesign ult i32 [[I_0_I]], 8
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; CHECK-NEXT: br i1 [[CMP_I]], label [[FOR_BODY_I]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: for.body.i:
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; CHECK-NEXT: [[CMP1_I:%.*]] = icmp eq i32 [[I_0_I]], [[TID:%.*]]
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; CHECK-NEXT: [[INC_I]] = add nuw nsw i32 [[I_0_I]], 1
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; CHECK-NEXT: br i1 [[CMP1_I]], label [[IF_THEN_I:%.*]], label [[FOR_COND_I]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: if.then.i:
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; CHECK-NEXT: [[HLSL_WAVE_ACTIVE_MAX2_I:%.*]] = call spir_func i32 @llvm.spv.wave.reduce.umax.i32(i32 [[TID]]) [ "convergencectrl"(token [[TMP1]]) ]
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i32 [[TID]]
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; CHECK-NEXT: store i32 [[HLSL_WAVE_ACTIVE_MAX2_I]], ptr [[TMP2]], align 4
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%0 = tail call token @llvm.experimental.convergence.entry()
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br label %for.cond.i
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for.cond.i:
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%i.0.i = phi i32 [ 0, %entry ], [ %inc.i, %for.body.i ]
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%2 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
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%cmp.i = icmp ult i32 %i.0.i, 8
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br i1 %cmp.i, label %for.body.i, label %exit.loopexit
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for.body.i:
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%cmp1.i = icmp eq i32 %i.0.i, %tid
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%inc.i = add nuw nsw i32 %i.0.i, 1
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br i1 %cmp1.i, label %if.then.i, label %for.cond.i
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exit.loopexit:
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br label %exit
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if.then.i:
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%hlsl.wave.active.max2.i = call spir_func i32 @llvm.spv.wave.reduce.umax.i32(i32 %tid) [ "convergencectrl"(token %2) ]
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%3 = getelementptr inbounds i32, ptr %array, i32 %tid
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store i32 %hlsl.wave.active.max2.i, ptr %3, align 4
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br label %exit
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exit:
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ret void
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}
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declare token @llvm.experimental.convergence.loop() #0
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declare i32 @llvm.spv.wave.reduce.umax.i32(i32) #0
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attributes #0 = { convergent }
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