37 lines · plain
1; Check for recognizing the "memmove" idiom.2; RUN: opt -hexagon-loop-idiom -S -mtriple hexagon-unknown-elf < %s \3; RUN: | FileCheck %s4; RUN: opt -p hexagon-loop-idiom -S -mtriple hexagon-unknown-elf < %s \5; RUN: | FileCheck %s6; CHECK: call void @llvm.memmove7 8; Function Attrs: norecurse nounwind9define void @foo(ptr nocapture %A, ptr nocapture readonly %B, i32 %n) #0 {10entry:11 %cmp1 = icmp sgt i32 %n, 012 br i1 %cmp1, label %for.body.preheader, label %for.end13 14for.body.preheader: ; preds = %entry15 br label %for.body16 17for.body: ; preds = %for.body.preheader, %for.body18 %arrayidx.phi = phi ptr [ %B, %for.body.preheader ], [ %arrayidx.inc, %for.body ]19 %arrayidx1.phi = phi ptr [ %A, %for.body.preheader ], [ %arrayidx1.inc, %for.body ]20 %i.02 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]21 %0 = load i32, ptr %arrayidx.phi, align 422 store i32 %0, ptr %arrayidx1.phi, align 423 %inc = add nuw nsw i32 %i.02, 124 %exitcond = icmp ne i32 %inc, %n25 %arrayidx.inc = getelementptr i32, ptr %arrayidx.phi, i32 126 %arrayidx1.inc = getelementptr i32, ptr %arrayidx1.phi, i32 127 br i1 %exitcond, label %for.body, label %for.end.loopexit28 29for.end.loopexit: ; preds = %for.body30 br label %for.end31 32for.end: ; preds = %for.end.loopexit, %entry33 ret void34}35 36attributes #0 = { nounwind }37