1 ; RUN: llc -O3 -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s
4 ; Generate hardware loop when loop 'latch' block is different
5 ; from the loop 'exiting' block.
7 ; CHECK: loop0(.LBB{{.}}_{{.}}, r{{[0-9]+}})
10 define void @test(ptr nocapture %pFL, i16 signext %nBS, ptr nocapture readonly %pHT) #0 {
12 %0 = load i32, ptr %pFL, align 4
13 %1 = tail call i64 @llvm.hexagon.M2.dpmpyss.s0(i32 %0, i32 246)
14 %2 = tail call i64 @llvm.hexagon.S2.asl.r.p(i64 %1, i32 -13)
15 %3 = tail call i32 @llvm.hexagon.A2.sat(i64 %2)
16 store i32 %3, ptr %pFL, align 4
17 %cmp16 = icmp sgt i16 %nBS, 0
18 br i1 %cmp16, label %for.body.lr.ph, label %for.end
21 %4 = sext i16 %nBS to i32
25 %5 = phi i32 [ %3, %for.body.lr.ph ], [ %.pre, %for.body.for.body_crit_edge ]
26 %arrayidx3.phi = phi ptr [ %pFL, %for.body.lr.ph ], [ %arrayidx3.inc, %for.body.for.body_crit_edge ]
27 %arrayidx5.phi = phi ptr [ %pHT, %for.body.lr.ph ], [ %arrayidx5.inc, %for.body.for.body_crit_edge ]
28 %i.017.pmt = phi i32 [ 1, %for.body.lr.ph ], [ %phitmp, %for.body.for.body_crit_edge ]
29 %6 = load i16, ptr %arrayidx5.phi, align 2
30 %conv6 = sext i16 %6 to i32
31 %7 = tail call i64 @llvm.hexagon.M2.dpmpyss.s0(i32 %5, i32 %conv6)
32 %8 = tail call i64 @llvm.hexagon.S2.asl.r.p(i64 %7, i32 -13)
33 %9 = tail call i32 @llvm.hexagon.A2.sat(i64 %8)
34 store i32 %9, ptr %arrayidx3.phi, align 4
35 %exitcond = icmp eq i32 %i.017.pmt, %4
36 %arrayidx3.inc = getelementptr i32, ptr %arrayidx3.phi, i32 1
37 br i1 %exitcond, label %for.end.loopexit, label %for.body.for.body_crit_edge
39 for.body.for.body_crit_edge:
40 %arrayidx5.inc = getelementptr i16, ptr %arrayidx5.phi, i32 1
41 %.pre = load i32, ptr %arrayidx3.inc, align 4
42 %phitmp = add i32 %i.017.pmt, 1
52 declare i32 @llvm.hexagon.A2.sat(i64) #1
54 declare i64 @llvm.hexagon.S2.asl.r.p(i64, i32) #1
56 declare i64 @llvm.hexagon.M2.dpmpyss.s0(i32, i32) #1
58 attributes #0 = { nounwind "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "ssp-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
59 attributes #1 = { nounwind readnone }