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; RUN: opt %loadPolly -polly-print-scops -disable-output < %s | FileCheck %s
; RUN: opt %loadPolly -polly-print-function-scops -disable-output < %s | FileCheck %s
;
; CHECK: Reduction Type: NONE
;
; Check that we do not mark these accesses as reduction like.
; We do this for the case the loads are modelt with the same LLVM-IR value and
; for the case there are different LLVM-IR values.
;
; void f(int *A) {
; for (int i = 0; i < 1024; i++)
; A[i] = A[i] + A[i];
; }
;
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
define void @f_one_load_case(ptr %A) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%exitcond = icmp ne i32 %i.0, 1024
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.0
%tmp = load i32, ptr %arrayidx, align 4
%add = add nsw i32 %tmp, %tmp
%arrayidx2 = getelementptr inbounds i32, ptr %A, i32 %i.0
store i32 %add, ptr %arrayidx2, align 4
br label %for.inc
for.inc: ; preds = %for.body
%inc = add nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
define void @f_two_loads_case(ptr %A) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%exitcond = icmp ne i32 %i.0, 1024
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.0
%tmp = load i32, ptr %arrayidx, align 4
%arrayidxCopy = getelementptr inbounds i32, ptr %A, i32 %i.0
%tmpCopy = load i32, ptr %arrayidxCopy, align 4
%add = add nsw i32 %tmp, %tmpCopy
%arrayidx2 = getelementptr inbounds i32, ptr %A, i32 %i.0
store i32 %add, ptr %arrayidx2, align 4
br label %for.inc
for.inc: ; preds = %for.body
%inc = add nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
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