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34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
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; int __attribute__((noinline)) sum_array(int *A, int n) {
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; return std::accumulate(A, A + n, 0);
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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-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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;CHECK: @sum_array
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;CHECK: phi <4 x i32>
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;CHECK: load <4 x i32>
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;CHECK: add nsw <4 x i32>
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;CHECK: ret i32
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define i32 @sum_array(i32* %A, i32 %n) nounwind uwtable readonly noinline ssp {
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%1 = sext i32 %n to i64
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%2 = getelementptr inbounds i32* %A, i64 %1
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%3 = icmp eq i32 %n, 0
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br i1 %3, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %.lr.ph.i
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.lr.ph.i: ; preds = %0, %.lr.ph.i
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%.03.i = phi i32* [ %6, %.lr.ph.i ], [ %A, %0 ]
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%.012.i = phi i32 [ %5, %.lr.ph.i ], [ 0, %0 ]
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%4 = load i32* %.03.i, align 4
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%5 = add nsw i32 %4, %.012.i
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%6 = getelementptr inbounds i32* %.03.i, i64 1
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%7 = icmp eq i32* %6, %2
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br i1 %7, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %.lr.ph.i
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_ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %.lr.ph.i, %0
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%.01.lcssa.i = phi i32 [ 0, %0 ], [ %5, %.lr.ph.i ]
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ret i32 %.01.lcssa.i
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}
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