forked from OSchip/llvm-project
76 lines
2.5 KiB
LLVM
76 lines
2.5 KiB
LLVM
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; RUN: llc -march=hexagon -mcpu=hexagonv5 -enable-pipeliner < %s | FileCheck %s
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; Make sure we attempt to pipeline all inner most loops.
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; Check if the first loop is pipelined.
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; CHECK: loop0(.LBB0_[[LOOP:.]],
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; CHECK: .LBB0_[[LOOP]]:
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; CHECK: add(r{{[0-9]+}}, r{{[0-9]+}})
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; CHECK-NEXT: memw(r{{[0-9]+}}{{.*}}++{{.*}}#4)
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; CHECK-NEXT: endloop0
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; Check if the second loop is pipelined.
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; CHECK: loop0(.LBB0_[[LOOP:.]],
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; CHECK: .LBB0_[[LOOP]]:
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; CHECK: add(r{{[0-9]+}}, r{{[0-9]+}})
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; CHECK-NEXT: memw(r{{[0-9]+}}{{.*}}++{{.*}}#4)
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; CHECK-NEXT: endloop0
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define i32 @test(i32* %a, i32 %n, i32 %l) {
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entry:
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%cmp23 = icmp sgt i32 %n, 0
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br i1 %cmp23, label %for.body3.lr.ph.preheader, label %for.end14
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for.body3.lr.ph.preheader:
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br label %for.body3.lr.ph
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for.body3.lr.ph:
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%sum1.026 = phi i32 [ %add8, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ]
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%sum.025 = phi i32 [ %add, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ]
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%j.024 = phi i32 [ %inc13, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ]
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br label %for.body3
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for.body3:
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%sum.118 = phi i32 [ %sum.025, %for.body3.lr.ph ], [ %add, %for.body3 ]
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%arrayidx.phi = phi i32* [ %a, %for.body3.lr.ph ], [ %arrayidx.inc, %for.body3 ]
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%i.017 = phi i32 [ 0, %for.body3.lr.ph ], [ %inc, %for.body3 ]
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%0 = load i32, i32* %arrayidx.phi, align 4
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%add = add nsw i32 %0, %sum.118
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%inc = add nsw i32 %i.017, 1
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%exitcond = icmp eq i32 %inc, %n
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%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
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br i1 %exitcond, label %for.end, label %for.body3
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for.end:
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tail call void @bar(i32* %a) #2
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br label %for.body6
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for.body6:
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%sum1.121 = phi i32 [ %sum1.026, %for.end ], [ %add8, %for.body6 ]
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%arrayidx7.phi = phi i32* [ %a, %for.end ], [ %arrayidx7.inc, %for.body6 ]
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%i.120 = phi i32 [ 0, %for.end ], [ %inc10, %for.body6 ]
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%1 = load i32, i32* %arrayidx7.phi, align 4
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%add8 = add nsw i32 %1, %sum1.121
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%inc10 = add nsw i32 %i.120, 1
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%exitcond29 = icmp eq i32 %inc10, %n
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%arrayidx7.inc = getelementptr i32, i32* %arrayidx7.phi, i32 1
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br i1 %exitcond29, label %for.inc12, label %for.body6
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for.inc12:
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%inc13 = add nsw i32 %j.024, 1
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%exitcond30 = icmp eq i32 %inc13, %n
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br i1 %exitcond30, label %for.end14.loopexit, label %for.body3.lr.ph
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for.end14.loopexit:
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br label %for.end14
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for.end14:
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%sum1.0.lcssa = phi i32 [ 0, %entry ], [ %add8, %for.end14.loopexit ]
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%sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.end14.loopexit ]
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%add15 = add nsw i32 %sum1.0.lcssa, %sum.0.lcssa
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ret i32 %add15
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}
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declare void @bar(i32*)
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