60 lines · plain
1; RUN: llc -O3 -mtriple=hexagon -mcpu=hexagonv5 < %s | FileCheck %s2; XFAIL: *3;4; Generate hardware loop when loop 'latch' block is different5; from the loop 'exiting' block.6 7; CHECK: loop0(.LBB{{.}}_{{.}}, r{{[0-9]+}})8; CHECK: endloop09 10define void @test(ptr nocapture %pFL, i16 signext %nBS, ptr nocapture readonly %pHT) #0 {11entry:12 %0 = load i32, ptr %pFL, align 413 %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 417 %cmp16 = icmp sgt i16 %nBS, 018 br i1 %cmp16, label %for.body.lr.ph, label %for.end19 20for.body.lr.ph:21 %4 = sext i16 %nBS to i3222 br label %for.body23 24for.body: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 230 %conv6 = sext i16 %6 to i3231 %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 435 %exitcond = icmp eq i32 %i.017.pmt, %436 %arrayidx3.inc = getelementptr i32, ptr %arrayidx3.phi, i32 137 br i1 %exitcond, label %for.end.loopexit, label %for.body.for.body_crit_edge38 39for.body.for.body_crit_edge:40 %arrayidx5.inc = getelementptr i16, ptr %arrayidx5.phi, i32 141 %.pre = load i32, ptr %arrayidx3.inc, align 442 %phitmp = add i32 %i.017.pmt, 143 br label %for.body44 45for.end.loopexit:46 br label %for.end47 48for.end:49 ret void50}51 52declare i32 @llvm.hexagon.A2.sat(i64) #153 54declare i64 @llvm.hexagon.S2.asl.r.p(i64, i32) #155 56declare i64 @llvm.hexagon.M2.dpmpyss.s0(i32, i32) #157 58attributes #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" }59attributes #1 = { nounwind readnone }60