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|
; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
;
; Ensure we do not move instructions from region statements in case the
; instruction to move loads from an array which is also written to from
; within the region. This is necessary as complex region statements may prevent
; us from detecting possible memory conflicts.
;
; for (int j = 0; j < n; j += 1) {
; bodyA:
; double val = A[0];
; if (cond)
;
; bodyA_true:
; A[0] = 42;
;
; bodyB:
; A[0] = val;
; }
;
define void @func(i32 %n, double* noalias nonnull %A) {
entry:
br label %for
for:
%j = phi i32 [0, %entry], [%j.inc, %inc]
%j.cmp = icmp slt i32 %j, %n
br i1 %j.cmp, label %bodyA, label %exit
bodyA:
%val = load double, double* %A
%cond = fcmp oeq double 21.0, 21.0
br i1 %cond, label %bodyA_true, label %bodyB
bodyA_true:
store double 42.0, double* %A
br label %bodyB
bodyB:
store double %val, double* %A
br label %bodyB_exit
bodyB_exit:
br label %inc
inc:
%j.inc = add nuw nsw i32 %j, 1
br label %for
exit:
br label %return
return:
ret void
}
; CHECK: ForwardOpTree executed, but did not modify anything
|
