forked from OSchip/llvm-project
58 lines
1.8 KiB
LLVM
58 lines
1.8 KiB
LLVM
; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
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;
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; CHECK: RAW dependences:
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; CHECK-NEXT: [N] -> { Stmt_S1[i0] -> Stmt_S2[] : N >= 11 and 0 <= i0 <= 1023; Stmt_S0[] -> Stmt_S1[o0] : N >= 11 and 0 <= o0 <= 1023 }
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; CHECK-NEXT: WAR dependences:
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; CHECK-NEXT: [N] -> { Stmt_S1[i0] -> Stmt_S2[] : N >= 11 and 0 <= i0 <= 1023 }
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; CHECK-NEXT: WAW dependences:
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; CHECK-NEXT: [N] -> { Stmt_S1[i0] -> Stmt_S2[] : N >= 11 and 0 <= i0 <= 1023; Stmt_S0[] -> Stmt_S1[o0] : N >= 11 and 0 <= o0 <= 1023 }
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; CHECK-NEXT: Reduction dependences:
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; CHECK-NEXT: [N] -> { Stmt_S1[i0] -> Stmt_S1[1 + i0] : N >= 11 and 0 <= i0 <= 1022 }
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;
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; void f(int *sum, int N) {
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; if (N >= 10) {
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; S0: *sum = 0;
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; for (int i = 0; i < 1024; i++)
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; S1: *sum += i;
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; S2: *sum = *sum * 3;
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; }
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; }
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
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define void @f(i32* %sum, i32 %N) {
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entry:
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br label %entry.1
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entry.1:
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%excond = icmp sgt i32 %N, 10
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br i1 %excond, label %S0, label %f.end
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S0:
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store i32 0, i32* %sum, align 4
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br label %for.cond
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for.cond: ; preds = %for.inc, %S0
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%i.0 = phi i32 [ 0, %S0 ], [ %inc, %for.inc ]
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%exitcond = icmp ne i32 %i.0, 1024
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br i1 %exitcond, label %S1, label %S2
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S1: ; preds = %for.cond
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%tmp = load i32, i32* %sum, align 4
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%add = add nsw i32 %tmp, %i.0
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store i32 %add, i32* %sum, align 4
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br label %for.inc
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for.inc: ; preds = %S1
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%inc = add nsw i32 %i.0, 1
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br label %for.cond
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S2: ; preds = %for.cond
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%tmp1 = load i32, i32* %sum, align 4
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%mul = mul nsw i32 %tmp1, 3
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store i32 %mul, i32* %sum, align 4
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br label %f.end
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f.end:
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ret void
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}
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