forked from OSchip/llvm-project
52 lines
1.4 KiB
LLVM
52 lines
1.4 KiB
LLVM
; RUN: opt < %s -analyze -delinearize | FileCheck %s
|
|
|
|
; Derived from the following code:
|
|
;
|
|
; void foo(long n, long m, double A[n][m]) {
|
|
; for (long i = 0; i < n; i++)
|
|
; for (long j = 0; j < m; j++)
|
|
; A[i][j] = 1.0;
|
|
; }
|
|
|
|
; Inst: %val = load double, double* %arrayidx
|
|
; In Loop with Header: for.j
|
|
; AddRec: {{0,+,(%m * 8)}<%for.i>,+,8}<%for.j>
|
|
; Base offset: %A
|
|
; ArrayDecl[UnknownSize][%m] with elements of 8 bytes.
|
|
; ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>]
|
|
|
|
; Inst: store double %val, double* %arrayidx
|
|
; In Loop with Header: for.j
|
|
; AddRec: {{%A,+,(8 * %m)}<%for.i>,+,8}<%for.j>
|
|
; CHECK: Base offset: %A
|
|
; CHECK: ArrayDecl[UnknownSize][%m] with elements of 8 bytes.
|
|
; CHECK: ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>]
|
|
|
|
define void @foo(i64 %n, i64 %m, double* %A) {
|
|
entry:
|
|
br label %for.i
|
|
|
|
for.i:
|
|
%i = phi i64 [ 0, %entry ], [ %i.inc, %for.i.inc ]
|
|
%tmp = mul nsw i64 %i, %m
|
|
br label %for.j
|
|
|
|
for.j:
|
|
%j = phi i64 [ 0, %for.i ], [ %j.inc, %for.j ]
|
|
%vlaarrayidx.sum = add i64 %j, %tmp
|
|
%arrayidx = getelementptr inbounds double, double* %A, i64 %vlaarrayidx.sum
|
|
%val = load double, double* %arrayidx
|
|
store double %val, double* %arrayidx
|
|
%j.inc = add nsw i64 %j, 1
|
|
%j.exitcond = icmp eq i64 %j.inc, %m
|
|
br i1 %j.exitcond, label %for.i.inc, label %for.j
|
|
|
|
for.i.inc:
|
|
%i.inc = add nsw i64 %i, 1
|
|
%i.exitcond = icmp eq i64 %i.inc, %n
|
|
br i1 %i.exitcond, label %end, label %for.i
|
|
|
|
end:
|
|
ret void
|
|
}
|