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; Check for recognizing the "memmove" idiom.
; RUN: opt -basicaa -hexagon-loop-idiom -S -mtriple hexagon-unknown-elf < %s \
; RUN: | FileCheck %s
; CHECK: call void @llvm.memmove
; Function Attrs: norecurse nounwind
define void @foo(i32* nocapture %A, i32* nocapture readonly %B, i32 %n) #0 {
entry:
%cmp1 = icmp sgt i32 %n, 0
br i1 %cmp1, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
%arrayidx.gep = getelementptr i32, i32* %B, i32 0
%arrayidx1.gep = getelementptr i32, i32* %A, i32 0
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%arrayidx.phi = phi i32* [ %arrayidx.gep, %for.body.preheader ], [ %arrayidx.inc, %for.body ]
%arrayidx1.phi = phi i32* [ %arrayidx1.gep, %for.body.preheader ], [ %arrayidx1.inc, %for.body ]
%i.02 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%0 = load i32, i32* %arrayidx.phi, align 4
store i32 %0, i32* %arrayidx1.phi, align 4
%inc = add nuw nsw i32 %i.02, 1
%exitcond = icmp ne i32 %inc, %n
%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
%arrayidx1.inc = getelementptr i32, i32* %arrayidx1.phi, i32 1
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
attributes #0 = { nounwind }
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