derek.holloway
7502bf64a4
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43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
; RUN: opt %loadNPMPolly -polly-ignore-aliasing -polly-invariant-load-hoisting=true '-passes=polly<no-default-opts;import-jscop>' -polly-print-scops -disable-output < %s 2>&1 | FileCheck %s
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;
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; This violated an assertion in setNewAccessRelation that assumed base pointers
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; to be load-hoisted. Without this assertion, it codegen would generate invalid
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; code.
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;
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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define void @base_pointer_load_is_inst_inside_invariant_1(i64 %n, ptr %A) {
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entry:
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br label %for.i
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for.i:
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%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
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br label %S1
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S1:
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%ptr = load ptr, ptr %A
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%conv = sitofp i64 %indvar.i to float
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%arrayidx5 = getelementptr float, ptr %ptr, i64 %indvar.i
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store float %conv, ptr %arrayidx5, align 4
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br label %for.i.inc
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for.i.inc:
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%indvar.i.next = add i64 %indvar.i, 1
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%exitcond.i = icmp ne i64 %indvar.i.next, %n
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br i1 %exitcond.i, label %for.i, label %exit
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exit:
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ret void
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}
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; Detected by -polly-detect with required load hoist.
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; CHECK-NOT: Valid Region for Scop: for.i => exit
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;
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; Load hoist if %ptr by -polly-scops.
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; CHECK: Invariant Accesses: {
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_S1[i0] -> MemRef_A[0] };
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; CHECK-NEXT: Execution Context: [n] -> { : n > 0 }
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; CHECK-NEXT: }
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