forked from OSchip/llvm-project
38 lines
1.2 KiB
LLVM
38 lines
1.2 KiB
LLVM
; RUN: opt %loadPolly -polly-codegen -polly-vectorizer=polly -S < %s | FileCheck %s
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; ModuleID = 'reverse.c'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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;int A[100];
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;void foo() {
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; for (int i=3; i >= 0; i--)
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; A[i]+=1;
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;}
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@A = common global [100 x i32] zeroinitializer, align 16
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; Function Attrs: nounwind uwtable
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define void @foo() #0 {
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entry:
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br label %for.body
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ 3, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @A, i64 0, i64 %indvars.iv
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%0 = load i32, i32* %arrayidx, align 4
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%add = add nsw i32 %0, 1
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store i32 %add, i32* %arrayidx, align 4
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%indvars.iv.next = add nsw i64 %indvars.iv, -1
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%1 = trunc i64 %indvars.iv to i32
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%cmp = icmp sgt i32 %1, 0
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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ret void
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}
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; CHECK: @foo
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; CHECK: [[LOAD:%[a-zA-Z0-9_]+]] = load <4 x i32>, <4 x i32>*
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; CHECK: [[REVERSE_LOAD:%[a-zA-Z0-9_]+reverse]] = shufflevector <4 x i32> [[LOAD]], <4 x i32> [[LOAD]], <4 x i32> <i32 3, i32 2, i32 1, i32 0>
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