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| ; RUN: opt %loadPolly -polly-allow-nonaffine -polly-dce -polly-ast -analyze < %s | FileCheck %s
;
; void f(int *A) {
; for (int i = 0; i < 1024; i++)
; S1: A[bar(i)] = i;
; for (int i = 0; i < 1024; i++)
; S2: A[i2] = i;
; }
; We unfortunately do need to execute all iterations of S1, as we do not know
; the size of A and as a result S1 may write for example to A[1024], which
; is not overwritten by S2.
; CHECK: for (int c0 = 0; c0 <= 1023; c0 += 1)
; CHECK: Stmt_S1(c0);
; CHECK: for (int c0 = 0; c0 <= 1023; c0 += 1)
; CHECK: Stmt_S2(c0);
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
declare i32 @bar(i32) #1
define void @f(i32* %A) {
entry:
br label %for.cond
for.cond:
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%exitcond = icmp ne i32 %i.0, 1024
br i1 %exitcond, label %S1, label %next
S1:
%nonaff = call i32 @bar(i32 %i.0)
%arrayidx = getelementptr inbounds i32, i32* %A, i32 %nonaff
store i32 %i.0, i32* %arrayidx, align 4
br label %for.inc
for.inc:
%inc = add nsw i32 %i.0, 1
br label %for.cond
next:
br label %for.cond.2
for.cond.2:
%i.2 = phi i32 [ 0, %next ], [ %inc.2, %for.inc.2 ]
%exitcond.2 = icmp ne i32 %i.2, 1024
br i1 %exitcond.2, label %S2, label %for.end
S2:
%arrayidx.2 = getelementptr inbounds i32, i32* %A, i32 %i.2
store i32 %i.2, i32* %arrayidx.2, align 4
br label %for.inc.2
for.inc.2:
%inc.2 = add nsw i32 %i.2, 1
br label %for.cond.2
for.end:
ret void
}
attributes #1 = { nounwind readnone }
|