forked from OSchip/llvm-project
78 lines
2.6 KiB
LLVM
78 lines
2.6 KiB
LLVM
; RUN: opt -basicaa %loadPolly -polly-detect-unprofitable -polly-dependences -analyze < %s | FileCheck %s
|
|
;
|
|
; Verify that only the inner reduction like accesses cause reduction dependences
|
|
;
|
|
; CHECK: Reduction dependences:
|
|
; CHECK: { Stmt_for_body3[i0, i1] -> Stmt_for_body3[i0, 1 + i1] : i0 <= 99 and i0 >= 0 and i1 <= 98 and i1 >= 0 }
|
|
;
|
|
; void f(int * restrict A, int * restrict sum) {
|
|
; int i, j, k;
|
|
; for (i = 0; i < 100; i++) {
|
|
; *sum *= 7;
|
|
; for (j = 0; j < 100; j++) {
|
|
; *sum += A[i+j];
|
|
; for (k = 0; k< 100; k++) {}
|
|
; }
|
|
; }
|
|
; }
|
|
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
|
|
|
|
define void @f(i32* noalias %A, i32* noalias %sum) {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.inc11, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc12, %for.inc11 ]
|
|
%exitcond2 = icmp ne i32 %i.0, 100
|
|
br i1 %exitcond2, label %for.body, label %for.end13
|
|
|
|
for.body: ; preds = %for.cond
|
|
%tmp = load i32, i32* %sum, align 4
|
|
%mul = mul nsw i32 %tmp, 7
|
|
store i32 %mul, i32* %sum, align 4
|
|
br label %for.cond1
|
|
|
|
for.cond1: ; preds = %for.inc8, %for.body
|
|
%j.0 = phi i32 [ 0, %for.body ], [ %inc9, %for.inc8 ]
|
|
%exitcond1 = icmp ne i32 %j.0, 100
|
|
br i1 %exitcond1, label %for.body3, label %for.end10
|
|
|
|
for.body3: ; preds = %for.cond1
|
|
%add = add nsw i32 %i.0, %j.0
|
|
%arrayidx = getelementptr inbounds i32, i32* %A, i32 %add
|
|
%tmp3 = load i32, i32* %arrayidx, align 4
|
|
%tmp4 = load i32, i32* %sum, align 4
|
|
%add4 = add nsw i32 %tmp4, %tmp3
|
|
store i32 %add4, i32* %sum, align 4
|
|
br label %for.cond5
|
|
|
|
for.cond5: ; preds = %for.inc, %for.body3
|
|
%k.0 = phi i32 [ 0, %for.body3 ], [ %inc, %for.inc ]
|
|
%exitcond = icmp ne i32 %k.0, 100
|
|
br i1 %exitcond, label %for.body7, label %for.end
|
|
|
|
for.body7: ; preds = %for.cond5
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.body7
|
|
%inc = add nsw i32 %k.0, 1
|
|
br label %for.cond5
|
|
|
|
for.end: ; preds = %for.cond5
|
|
br label %for.inc8
|
|
|
|
for.inc8: ; preds = %for.end
|
|
%inc9 = add nsw i32 %j.0, 1
|
|
br label %for.cond1
|
|
|
|
for.end10: ; preds = %for.cond1
|
|
br label %for.inc11
|
|
|
|
for.inc11: ; preds = %for.end10
|
|
%inc12 = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end13: ; preds = %for.cond
|
|
ret void
|
|
}
|