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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopInterchange/inner-preheader-single-phi.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

34 lines
736 B
LLVM

; RUN: opt -passes=loop-interchange -loop-interchange-profitabilities=ignore --disable-output %s
; Loop-interchange pass doesn't crash if the inner loop preheader has PHI nodes.
define void @f(ptr %A) {
entry:
br label %outer.header
outer.header:
%i = phi i64 [ 0, %entry ], [ %i.inc, %outer.latch ]
br label %inner.ph
inner.ph:
%p = phi i64 [ 42, %outer.header ]
br label %inner
inner:
%j = phi i64 [ 0, %inner.ph ], [ %j.inc, %inner ]
%j.inc = add i64 %j, 1
%ec.j = icmp eq i64 %j.inc, 10
br i1 %ec.j, label %outer.body, label %inner
outer.body:
br label %outer.latch
outer.latch:
%i.inc = add i64 %i, 1
%ec.i = icmp eq i64 %i.inc, 10
br i1 %ec.i, label %exit, label %outer.header
exit:
ret void
}