forked from OSchip/llvm-project
51 lines
1.8 KiB
LLVM
51 lines
1.8 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze \
|
|
; RUN: -polly-invariant-load-hoisting=true < %s | FileCheck %s
|
|
;
|
|
; void f(int *A, unsigned N) {
|
|
; for (unsigned i = 0; i < N; i++)
|
|
; A[i / 3] = A[5 * N / 3];
|
|
; }
|
|
;
|
|
; CHECK: Invariant Accesses: {
|
|
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
|
|
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : -2 + 5N <= 3o0 <= 5N };
|
|
; CHECK-NEXT: Execution Context: [N] -> { : 0 < N <= 1383505805528216371 }
|
|
; CHECK-NEXT: }
|
|
;
|
|
; CHECK: Assumed Context:
|
|
; CHECK-NEXT: [N] -> { : }
|
|
; CHECK-NEXT: Invalid Context:
|
|
; CHECK-NEXT: [N] -> { : N >= 1383505805528216372 }
|
|
|
|
; CHECK: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
|
|
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : -2 + i0 <= 3o0 <= i0 };
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
define void @f(i32* %A, i64 %N) {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.inc, %entry
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
|
|
%exitcond = icmp ne i64 %indvars.iv, %N
|
|
br i1 %exitcond, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%mul = mul nsw i64 %N, 5
|
|
%div2 = udiv i64 %mul, 3
|
|
%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %div2
|
|
%load = load i32, i32* %arrayidx2, align 4
|
|
%div = udiv i64 %indvars.iv, 3
|
|
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %div
|
|
store i32 %load, i32* %arrayidx, align 4
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.body
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|