forked from OSchip/llvm-project
74 lines
2.4 KiB
LLVM
74 lines
2.4 KiB
LLVM
; RUN: opt %loadPolly -polly-dependences -analyze -basicaa < %s | FileCheck %s
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;
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; CHECK: Reduction dependences:
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; CHECK: { Stmt_for_inc[i0, i1] -> Stmt_for_inc[i0, 1 + i1] : i0 <= 99 and i0 >= 0 and i1 <= 98 and i1 >= 0 }
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;
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; int f(int * __restrict__ A) {
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; int i, j, sum = 0;
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; for (k = 0; k < 37; k = g(k)) {
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; for (i = 0; i < 100; i++) {
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; sum *= 2;
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; for (j = 0; j < 100; j++) {
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; sum += A[i+j];
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; }
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; }
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; }
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; return sum;
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; }
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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declare i64 @g(i64)
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define i32 @f(i32* noalias %A) {
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entry:
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%sum.04.reg2mem = alloca i32
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%sum.12.reg2mem = alloca i32
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br label %entry.split
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entry.split: ; preds = %entry
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store i32 0, i32* %sum.04.reg2mem
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br label %for.body_outer_split
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for.body_outer_split: ; preds = %entry.split, %for.inc5
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%indvars.ivK = phi i64 [ 0, %entry.split ], [ %incK, %for.bos2 ]
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br label %for.body_outer
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for.body_outer: ; preds = %for.body_outer_split
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%incK = call i64 @g(i64 %indvars.ivK)
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%exitcondK = icmp eq i64 %incK, 100
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br i1 %exitcondK, label %for.end7, label %for.body
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for.body: ; preds = %for.inc5, %for.body_outer
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%indvars.iv23 = phi i64 [ 0, %for.body_outer ], [ %3, %for.inc5 ]
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%sum.04.reload = load i32, i32* %sum.04.reg2mem
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%mul = shl nsw i32 %sum.04.reload, 1
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store i32 %mul, i32* %sum.12.reg2mem
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br label %for.inc
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for.inc: ; preds = %for.inc, %for.body
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%indvars.iv1 = phi i64 [ 0, %for.body ], [ %1, %for.inc ]
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%sum.12.reload = load i32, i32* %sum.12.reg2mem
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%0 = add i64 %indvars.iv23, %indvars.iv1
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%arrayidx = getelementptr i32, i32* %A, i64 %0
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%tmp5 = load i32, i32* %arrayidx, align 4
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%add4 = add nsw i32 %tmp5, %sum.12.reload
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%1 = add nuw nsw i64 %indvars.iv1, 1
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%exitcond1 = icmp eq i64 %1, 100
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store i32 %add4, i32* %sum.12.reg2mem
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br i1 %exitcond1, label %for.inc5, label %for.inc
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for.inc5: ; preds = %for.inc
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%2 = load i32, i32* %sum.12.reg2mem
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%3 = add nuw nsw i64 %indvars.iv23, 1
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%exitcond2 = icmp eq i64 %3, 100
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store i32 %2, i32* %sum.04.reg2mem
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br i1 %exitcond2, label %for.bos2, label %for.body
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for.bos2:
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br label %for.body_outer_split
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for.end7: ; preds = %for.inc5
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%4 = load i32, i32* %sum.04.reg2mem
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ret i32 %4
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}
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