1; REQUIRES: asserts 2 3; RUN: llc -march=hexagon -mcpu=hexagonv65 -O3 -debug-only=pipeliner \ 4; RUN: < %s 2>&1 -pipeliner-experimental-cg=true | FileCheck %s 5 6; As part of https://reviews.llvm.org/D106308 this test broke. 7; It is not surprising as the tts is full of UB and run with O3. 8; FIXME: It is unclear what to do with this test now, replacing null/undef 9; with pointer arguments could be a way to go. 10; XFAIL: * 11 12; Test that the artificial dependences are ignored while computing the 13; circuits. 14 15; The recurrence should be 1 here. If we do not ignore artificial deps, 16; it will be greater. 17; CHECK: rec=1, 18 19define void @foo(i32 %size) #0 { 20entry: 21 %add = add nsw i32 0, 4 22 %shr = ashr i32 %size, 1 23 br i1 undef, label %L57.us, label %L57.us.ur 24 25L57.us: 26 %R9.0470.us = phi i32 [ %sub40.us.3, %L57.us ], [ undef, %entry ] 27 %sub40.us.3 = add i32 %R9.0470.us, -64 28 br i1 undef, label %L57.us, label %for.cond22.for.end_crit_edge.us.ur-lcssa 29 30for.cond22.for.end_crit_edge.us.ur-lcssa: 31 %inc.us.3.lcssa = phi i32 [ undef, %L57.us ] 32 %sub40.us.3.lcssa = phi i32 [ %sub40.us.3, %L57.us ] 33 %0 = icmp eq i32 %inc.us.3.lcssa, %shr 34 br i1 %0, label %for.cond22.for.end_crit_edge.us, label %L57.us.ur 35 36L57.us.ur: 37 %R15_14.0478.us.ur = phi i64 [ %1, %L57.us.ur ], [ 0, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 38 %R13_12.0477.us.ur = phi i64 [ %14, %L57.us.ur ], [ 0, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 39 %R11_10.0476.us.ur = phi i64 [ %8, %L57.us.ur ], [ 0, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 40 %R7_6.0475.us.ur = phi i64 [ %7, %L57.us.ur ], [ 0, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 41 %R5_4.2474.us.ur = phi i64 [ %16, %L57.us.ur ], [ undef, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 42 %R3_2.0473.us.ur = phi i64 [ %9, %L57.us.ur ], [ 0, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 43 %R1_0.0472.us.ur = phi i64 [ %15, %L57.us.ur ], [ undef, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 44 %kk.0471.us.ur = phi i32 [ %inc.us.ur, %L57.us.ur ], [ 0, %entry ], [ %inc.us.3.lcssa, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 45 %R9.0470.us.ur = phi i32 [ %sub40.us.ur, %L57.us.ur ], [ undef, %entry ], [ %sub40.us.3.lcssa, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 46 %R8.0469.us.ur = phi i32 [ %sub34.us.ur, %L57.us.ur ], [ undef, %entry ], [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ] 47 %1 = tail call i64 @llvm.hexagon.M2.vdmacs.s0(i64 %R15_14.0478.us.ur, i64 %R1_0.0472.us.ur, i64 %R3_2.0473.us.ur) 48 %2 = tail call i64 @llvm.hexagon.S2.shuffeh(i64 %R5_4.2474.us.ur, i64 %R7_6.0475.us.ur) 49 %3 = inttoptr i32 %R9.0470.us.ur to i16* 50 %4 = load i16, i16* %3, align 2 51 %conv27.us.ur = sext i16 %4 to i32 52 %sub28.us.ur = add i32 %R9.0470.us.ur, -8 53 %5 = inttoptr i32 %R8.0469.us.ur to i16* 54 %6 = load i16, i16* %5, align 2 55 %conv30.us.ur = sext i16 %6 to i32 56 %sub31.us.ur = add i32 %R8.0469.us.ur, -8 57 %7 = tail call i64 @llvm.hexagon.A2.combinew(i32 %conv27.us.ur, i32 %conv30.us.ur) 58 %8 = tail call i64 @llvm.hexagon.M2.vdmacs.s0(i64 %R11_10.0476.us.ur, i64 %R1_0.0472.us.ur, i64 %2) 59 %9 = tail call i64 @llvm.hexagon.S2.shuffeh(i64 %7, i64 %R5_4.2474.us.ur) 60 %10 = inttoptr i32 %sub31.us.ur to i16* 61 %11 = load i16, i16* %10, align 2 62 %conv33.us.ur = sext i16 %11 to i32 63 %sub34.us.ur = add i32 %R8.0469.us.ur, -16 64 %conv35.us.ur = trunc i64 %9 to i32 65 %12 = inttoptr i32 %sub28.us.ur to i16* 66 %13 = load i16, i16* %12, align 2 67 %conv39.us.ur = sext i16 %13 to i32 68 %sub40.us.ur = add i32 %R9.0470.us.ur, -16 69 %14 = tail call i64 @llvm.hexagon.M2.vdmacs.s0(i64 %R13_12.0477.us.ur, i64 %R1_0.0472.us.ur, i64 %9) 70 %15 = tail call i64 @llvm.hexagon.A2.combinew(i32 %conv35.us.ur, i32 undef) 71 %16 = tail call i64 @llvm.hexagon.A2.combinew(i32 %conv39.us.ur, i32 %conv33.us.ur) 72 %inc.us.ur = add nsw i32 %kk.0471.us.ur, 1 73 %exitcond535.ur = icmp eq i32 %inc.us.ur, %shr 74 br i1 %exitcond535.ur, label %for.cond22.for.end_crit_edge.us.ur-lcssa572, label %L57.us.ur 75 76for.cond22.for.end_crit_edge.us.ur-lcssa572: 77 %.lcssa730 = phi i64 [ %14, %L57.us.ur ] 78 %.lcssa729 = phi i64 [ %8, %L57.us.ur ] 79 %.lcssa728 = phi i64 [ %1, %L57.us.ur ] 80 %extract.t652 = trunc i64 %.lcssa730 to i32 81 %extract661 = lshr i64 %.lcssa729, 32 82 %extract.t662 = trunc i64 %extract661 to i32 83 %extract.t664 = trunc i64 %.lcssa728 to i32 84 br label %for.cond22.for.end_crit_edge.us 85 86for.cond22.for.end_crit_edge.us: 87 %.lcssa551.off0 = phi i32 [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ], [ %extract.t652, %for.cond22.for.end_crit_edge.us.ur-lcssa572 ] 88 %.lcssa550.off32 = phi i32 [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ], [ %extract.t662, %for.cond22.for.end_crit_edge.us.ur-lcssa572 ] 89 %.lcssa549.off0 = phi i32 [ undef, %for.cond22.for.end_crit_edge.us.ur-lcssa ], [ %extract.t664, %for.cond22.for.end_crit_edge.us.ur-lcssa572 ] 90 %17 = inttoptr i32 %add to i32* 91 store i32 %.lcssa549.off0, i32* %17, align 4 92 %add.ptr61.us = getelementptr inbounds i8, i8* null, i32 32 93 %18 = bitcast i8* %add.ptr61.us to i32* 94 store i32 %.lcssa551.off0, i32* %18, align 4 95 %19 = bitcast i8* undef to i32* 96 store i32 %.lcssa550.off32, i32* %19, align 4 97 call void @llvm.trap() 98 unreachable 99} 100 101; Function Attrs: nounwind readnone 102declare i64 @llvm.hexagon.A2.combinew(i32, i32) #1 103 104; Function Attrs: nounwind readnone 105declare i64 @llvm.hexagon.M2.vdmacs.s0(i64, i64, i64) #1 106 107; Function Attrs: nounwind readnone 108declare i64 @llvm.hexagon.S2.shuffeh(i64, i64) #1 109 110; Function Attrs: noreturn nounwind 111declare void @llvm.trap() #2 112 113attributes #0 = { nounwind } 114attributes #1 = { nounwind readnone } 115attributes #2 = { noreturn nounwind } 116