derek.holloway
7502bf64a4
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49 lines
1.5 KiB
LLVM
49 lines
1.5 KiB
LLVM
; RUN: opt %loadNPMPolly '-passes=polly<no-default-opts>' -S < %s | FileCheck %s
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define void @foo(ptr %A, i1 %cond0, i1 %cond1) {
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entry:
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br label %loop
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loop:
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%indvar = phi i64 [0, %entry], [%indvar.next, %backedge]
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%val0 = fadd float 1.0, 2.0
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%val1 = fadd float 1.0, 2.0
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br i1 %cond0, label %branch1, label %backedge
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; CHECK-LABEL: polly.stmt.loop:
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; CHECK-NEXT: %p_val0 = fadd float 1.000000e+00, 2.000000e+00
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; CHECK-NEXT: %p_val1 = fadd float 1.000000e+00, 2.000000e+00
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; CHECK-NEXT: br i1
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; The interesting instruction here is %val2, which does not dominate the exit of
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; the non-affine region. Care needs to be taken when code-generating this write.
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; Specifically, at some point we modeled this scalar write, which we tried to
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; code generate in the exit block of the non-affine region.
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branch1:
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%val2 = fadd float 1.0, 2.0
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br i1 %cond1, label %branch2, label %backedge
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; CHECK-LABEL: polly.stmt.branch1:
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; CHECK-NEXT: %p_val2 = fadd float 1.000000e+00, 2.000000e+00
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; CHECK-NEXT: br i1
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branch2:
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br label %backedge
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; CHECK-LABEL: polly.stmt.branch2:
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; CHECK-NEXT: br label
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; CHECK-LABEL: polly.stmt.backedge.exit:
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; CHECK: %polly.merge = phi float [ %p_val0, %polly.stmt.loop ], [ %p_val1, %polly.stmt.branch1 ], [ %p_val2, %polly.stmt.branch2 ]
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backedge:
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%merge = phi float [%val0, %loop], [%val1, %branch1], [%val2, %branch2]
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%indvar.next = add i64 %indvar, 1
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store float %merge, ptr %A
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%cmp = icmp sle i64 %indvar.next, 100
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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