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