forked from OSchip/llvm-project
109 lines
4.5 KiB
LLVM
109 lines
4.5 KiB
LLVM
; RUN: opt %loadPolly -basicaa -polly-dependences -analyze < %s | FileCheck %s
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;
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;
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; These are the important RAW dependences, as they need to originate/end in only one iteration:
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; Stmt_S1[i0, 1023] -> Stmt_S2[i0, o1]
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; Stmt_S1[i0, i1] -> Stmt_S2[i0, 0]
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;
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; These are the important WAW dependences, as they need to originate/end in only one iteration:
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; Stmt_S1[i0, 1023] -> Stmt_S2[i0, o1]
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; Stmt_S1[i0, i1] -> Stmt_S2[i0, 0]
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;
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; CHECK: RAW dependences:
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; CHECK-NEXT: { Stmt_S0[i0] -> Stmt_S1[i0, o1] : 0 <= i0 <= 1023 and 0 <= o1 <= 1023; Stmt_S2[i0, i1] -> Stmt_S3[i0] : 0 <= i0 <= 1023 and 0 <= i1 <= 1023; Stmt_S3[i0] -> Stmt_S0[1 + i0] : 0 <= i0 <= 1022; Stmt_S1[i0, 1023] -> Stmt_S2[i0, o1] : 0 <= i0 <= 1023 and 0 <= o1 <= 1023; Stmt_S1[i0, i1] -> Stmt_S2[i0, 0] : 0 <= i0 <= 1023 and 0 <= i1 <= 1022 }
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; CHECK-NEXT: WAR dependences:
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; CHECK-NEXT: { Stmt_S0[i0] -> Stmt_S1[i0, o1] : 0 <= i0 <= 1023 and 0 <= o1 <= 1023; Stmt_S2[i0, i1] -> Stmt_S3[i0] : 0 <= i0 <= 1023 and 0 <= i1 <= 1023; Stmt_S3[i0] -> Stmt_S0[1 + i0] : 0 <= i0 <= 1022; Stmt_S1[i0, 1023] -> Stmt_S2[i0, o1] : 0 <= i0 <= 1023 and 0 <= o1 <= 1023; Stmt_S1[i0, i1] -> Stmt_S2[i0, 0] : 0 <= i0 <= 1023 and 0 <= i1 <= 1022 }
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; CHECK-NEXT: WAW dependences:
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; CHECK-NEXT: { Stmt_S0[i0] -> Stmt_S1[i0, o1] : 0 <= i0 <= 1023 and 0 <= o1 <= 1023; Stmt_S2[i0, i1] -> Stmt_S3[i0] : 0 <= i0 <= 1023 and 0 <= i1 <= 1023; Stmt_S3[i0] -> Stmt_S0[1 + i0] : 0 <= i0 <= 1022; Stmt_S1[i0, 1023] -> Stmt_S2[i0, o1] : 0 <= i0 <= 1023 and 0 <= o1 <= 1023; Stmt_S1[i0, i1] -> Stmt_S2[i0, 0] : 0 <= i0 <= 1023 and 0 <= i1 <= 1022 }
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; CHECK-NEXT: Reduction dependences:
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; CHECK-NEXT: { Stmt_S1[i0, i1] -> Stmt_S1[i0, 1 + i1] : 0 <= i0 <= 1023 and 0 <= i1 <= 1022; Stmt_S2[i0, i1] -> Stmt_S2[i0, 1 + i1] : 0 <= i0 <= 1023 and 0 <= i1 <= 1022 }
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;
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; void f(int *restrict red) {
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; for (int j = 0; j < 1024; j++) {
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; S0: *red = 42 + *red * 5;
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; for (int i = 0; i < 1024; i++)
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; S1: *red *= i;
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; for (int i = 0; i < 1024; i++)
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; S2: *red += i;
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; S3: *red = 42 + *red * 7;
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; }
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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* noalias %red) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc15, %entry
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%j.0 = phi i32 [ 0, %entry ], [ %inc16, %for.inc15 ]
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%exitcond2 = icmp ne i32 %j.0, 1024
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br i1 %exitcond2, label %for.body, label %for.end17
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for.body: ; preds = %for.cond
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br label %S0
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S0: ; preds = %for.body
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%tmp = load i32, i32* %red, align 4
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%mul = mul nsw i32 %tmp, 5
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%add = add nsw i32 %mul, 42
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store i32 %add, i32* %red, align 4
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br label %for.cond1
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for.cond1: ; 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 %for.body3, label %for.end
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for.body3: ; preds = %for.cond1
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br label %S1
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S1: ; preds = %for.body3
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%tmp3 = load i32, i32* %red, align 4
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%mul4 = mul nsw i32 %tmp3, %i.0
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store i32 %mul4, i32* %red, 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.cond1
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for.end: ; preds = %for.cond1
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br label %for.cond6
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for.cond6: ; preds = %for.inc10, %for.end
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%i5.0 = phi i32 [ 0, %for.end ], [ %inc11, %for.inc10 ]
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%exitcond1 = icmp ne i32 %i5.0, 1024
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br i1 %exitcond1, label %for.body8, label %for.end12
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for.body8: ; preds = %for.cond6
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br label %S2
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S2: ; preds = %for.body8
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%tmp4 = load i32, i32* %red, align 4
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%add9 = add nsw i32 %tmp4, %i5.0
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store i32 %add9, i32* %red, align 4
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br label %for.inc10
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for.inc10: ; preds = %S2
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%inc11 = add nsw i32 %i5.0, 1
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br label %for.cond6
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for.end12: ; preds = %for.cond6
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br label %S3
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S3: ; preds = %for.end12
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%tmp5 = load i32, i32* %red, align 4
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%mul13 = mul nsw i32 %tmp5, 7
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%add14 = add nsw i32 %mul13, 42
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store i32 %add14, i32* %red, align 4
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br label %for.inc15
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for.inc15: ; preds = %S3
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%inc16 = add nsw i32 %j.0, 1
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br label %for.cond
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for.end17: ; preds = %for.cond
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ret void
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}
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