| ; RUN: llc -O3 -march=hexagon < %s | FileCheck %s |
| ; Test to ensure LSR does not optimize out addrec of the outerloop. |
| ; This will help to generate post-increment instructions, otherwise |
| ; it end up an as extra reg+reg add inside the loop. |
| ; CHECK: loop0(.LBB0_[[LOOP:.]], |
| ; CHECK: .LBB0_[[LOOP]]: |
| ; CHECK: memuh{{.*}}++ |
| ; CHECK: endloop |
| |
| |
| define dso_local signext i16 @foo(i16* nocapture readonly %filt, i16* nocapture readonly %inp, i32 %c1, i32 %c2) local_unnamed_addr { |
| entry: |
| %cmp28 = icmp sgt i32 %c1, 0 |
| %cmp221 = icmp sgt i32 %c2, 0 |
| %or.cond = and i1 %cmp28, %cmp221 |
| br i1 %or.cond, label %for.cond1.preheader.us, label %for.cond.cleanup |
| |
| for.cond1.preheader.us: ; preds = %entry, %for.cond1.for.cond.cleanup3_crit_edge.us |
| %filt.addr.032.us = phi i16* [ %scevgep, %for.cond1.for.cond.cleanup3_crit_edge.us ], [ %filt, %entry ] |
| %inp.addr.031.us = phi i16* [ %scevgep35, %for.cond1.for.cond.cleanup3_crit_edge.us ], [ %inp, %entry ] |
| %l.030.us = phi i32 [ %inc11.us, %for.cond1.for.cond.cleanup3_crit_edge.us ], [ 0, %entry ] |
| %sum0.029.us = phi i16 [ %add8.us, %for.cond1.for.cond.cleanup3_crit_edge.us ], [ 0, %entry ] |
| %scevgep = getelementptr i16, i16* %filt.addr.032.us, i32 %c2 |
| br label %for.body4.us |
| |
| for.body4.us: ; preds = %for.body4.us, %for.cond1.preheader.us |
| %z.025.us = phi i32 [ 0, %for.cond1.preheader.us ], [ %inc.us, %for.body4.us ] |
| %filt.addr.124.us = phi i16* [ %filt.addr.032.us, %for.cond1.preheader.us ], [ %incdec.ptr.us, %for.body4.us ] |
| %inp.addr.123.us = phi i16* [ %inp.addr.031.us, %for.cond1.preheader.us ], [ %incdec.ptr5.us, %for.body4.us ] |
| %sum0.122.us = phi i16 [ %sum0.029.us, %for.cond1.preheader.us ], [ %add8.us, %for.body4.us ] |
| %incdec.ptr.us = getelementptr inbounds i16, i16* %filt.addr.124.us, i32 1 |
| %0 = load i16, i16* %filt.addr.124.us, align 2 |
| %incdec.ptr5.us = getelementptr inbounds i16, i16* %inp.addr.123.us, i32 1 |
| %1 = load i16, i16* %inp.addr.123.us, align 2 |
| %add.us = add i16 %0, %sum0.122.us |
| %add8.us = add i16 %add.us, %1 |
| %inc.us = add nuw nsw i32 %z.025.us, 1 |
| %exitcond = icmp eq i32 %inc.us, %c2 |
| br i1 %exitcond, label %for.cond1.for.cond.cleanup3_crit_edge.us, label %for.body4.us |
| |
| for.cond1.for.cond.cleanup3_crit_edge.us: ; preds = %for.body4.us |
| %scevgep35 = getelementptr i16, i16* %inp.addr.031.us, i32 %c2 |
| %inc11.us = add nuw nsw i32 %l.030.us, 1 |
| %exitcond36 = icmp eq i32 %inc11.us, %c1 |
| br i1 %exitcond36, label %for.cond.cleanup, label %for.cond1.preheader.us |
| |
| for.cond.cleanup: ; preds = %for.cond1.for.cond.cleanup3_crit_edge.us, %entry |
| %sum0.0.lcssa = phi i16 [ 0, %entry ], [ %add8.us, %for.cond1.for.cond.cleanup3_crit_edge.us ] |
| ret i16 %sum0.0.lcssa |
| } |