4b3a878e8a
The patch sets the vectorization metadata to false for Polly's fallback loops. These are the loops executed when RTCs fail. This minimizes the multiple loop versioning carried out by Polly and subsequently by the Loop Vectorizer. --------- Co-authored-by: Michael Kruse <github@meinersbur.de>
69 lines
2.3 KiB
LLVM
69 lines
2.3 KiB
LLVM
; RUN: opt %loadNPMPolly -S -passes=polly-codegen < %s | FileCheck %s
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;
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; float f(float *A, int N) {
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; float tmp = 0;
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; for (int i = 0; i < N; i++)
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; tmp += A[i];
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; }
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;
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; CHECK: bb:
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; CHECK-NOT: %tmp7{{[.*]}} = alloca float
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; CHECK-DAG: %tmp.0.s2a = alloca float
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; CHECK-NOT: %tmp7{{[.*]}} = alloca float
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; CHECK-DAG: %tmp.0.phiops = alloca float
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; CHECK-NOT: %tmp7{{[.*]}} = alloca float
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; CHECK-LABEL: exit:
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; CHECK-NEXT: ret
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; CHECK-LABEL: polly.start:
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; CHECK-NEXT: store float 0.000000e+00, ptr %tmp.0.phiops
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; CHECK-NEXT: sext
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; CHECK-LABEL: polly.exiting:
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; CHECK-NEXT: br label %polly.merge_new_and_old
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; CHECK-LABEL: polly.stmt.bb1{{[0-9]*}}:
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; CHECK-NEXT: %tmp.0.phiops.reload[[R1:[0-9]*]] = load float, ptr %tmp.0.phiops
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; CHECK: store float %tmp.0.phiops.reload[[R1]], ptr %tmp.0.s2a
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; CHECK-LABEL: polly.stmt.bb4:
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; CHECK: %tmp.0.s2a.reload[[R3:[0-9]*]] = load float, ptr %tmp.0.s2a
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; CHECK: %tmp[[R5:[0-9]*]]_p_scalar_ = load float, ptr %scevgep, align 4, !alias.scope !2, !noalias !5
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; CHECK: %p_tmp[[R4:[0-9]*]] = fadd float %tmp.0.s2a.reload[[R3]], %tmp[[R5]]_p_scalar_
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; CHECK: store float %p_tmp[[R4]], ptr %tmp.0.phiops
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; CHECK-LABEL: polly.stmt.bb1{{[0-9]*}}:
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; CHECK-NEXT: %tmp.0.phiops.reload[[R2:[0-9]*]] = load float, ptr %tmp.0.phiops
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; CHECK: store float %tmp.0.phiops.reload[[R2]], ptr %tmp.0.s2a
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @f(ptr %A, i32 %N) {
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bb:
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%tmp = sext i32 %N to i64
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br label %bb1
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bb1: ; preds = %bb4, %bb
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%indvars.iv = phi i64 [ %indvars.iv.next, %bb4 ], [ 0, %bb ]
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%tmp.0 = phi float [ 0.000000e+00, %bb ], [ %tmp7, %bb4 ]
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%tmp2 = icmp slt i64 %indvars.iv, %tmp
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br i1 %tmp2, label %bb3, label %bb8
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bb3: ; preds = %bb1
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br label %bb4
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bb4: ; preds = %bb3
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%tmp5 = getelementptr inbounds float, ptr %A, i64 %indvars.iv
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%tmp6 = load float, ptr %tmp5, align 4
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%tmp7 = fadd float %tmp.0, %tmp6
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %bb1
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bb8: ; preds = %bb1
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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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