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; RUN: opt -passes='default<O3>' -enable-loopinterchange -disable-output \
; RUN: -disable-verify -verify-analysis-invalidation=0 \
; RUN: -debug-pass-manager=quiet %s 2>&1 | FileCheck %s
; Test the position of LoopInterchange in the pass pipeline.
; CHECK-NOT: Running pass: LoopInterchangePass
; CHECK: Running pass: ControlHeightReductionPass
; CHECK-NEXT: Running pass: LoopSimplifyPass
; CHECK-NEXT: Running pass: LCSSAPass
; CHECK-NEXT: Running pass: LoopRotatePass
; CHECK-NEXT: Running pass: LoopDeletionPass
; CHECK-NEXT: Running pass: LoopRotatePass
; CHECK-NEXT: Running pass: LoopDeletionPass
; CHECK-NEXT: Running pass: LoopInterchangePass
; CHECK-NEXT: Running pass: LoopDistributePass
; CHECK-NEXT: Running pass: InjectTLIMappings
; CHECK-NEXT: Running pass: LoopVectorizePass
define void @foo(ptr %a, i32 %n) {
entry:
br label %for.i.header
for.i.header:
%i = phi i32 [ 0, %entry ], [ %i.next, %for.i.latch ]
br label %for.j
for.j:
%j = phi i32 [ 0, %for.i.header ], [ %j.next, %for.j ]
%tmp = mul i32 %i, %n
%offset = add i32 %tmp, %j
%idx = getelementptr inbounds i32, ptr %a, i32 %offset
%load = load i32, ptr %idx, align 4
%inc = add i32 %load, 1
store i32 %inc, ptr %idx, align 4
%j.next = add i32 %j, 1
%j.exit = icmp eq i32 %j.next, %n
br i1 %j.exit, label %for.i.latch, label %for.j
for.i.latch:
%i.next = add i32 %i, 1
%i.exit = icmp eq i32 %i.next, %n
br i1 %i.exit, label %for.i.header, label %exit
exit:
ret void
}
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