1; RUN: llc -march=hexagon -enable-pipeliner < %s 2; REQUIRES: asserts 3 4; Check that a dead REG_SEQUENCE doesn't ICE. 5 6; Function Attrs: nounwind 7define void @f0(i32* nocapture %a0, i32 %a1) #0 { 8b0: 9 %v0 = mul nsw i32 %a1, 4 10 %v1 = icmp sgt i32 %v0, 0 11 br i1 %v1, label %b1, label %b2 12 13b1: ; preds = %b1, %b0 14 %v2 = phi i32 [ %v11, %b1 ], [ 0, %b0 ] 15 %v3 = load i32, i32* null, align 4 16 %v4 = zext i32 %v3 to i64 17 %v5 = getelementptr inbounds i32, i32* %a0, i32 0 18 %v6 = load i32, i32* %v5, align 4 19 %v7 = zext i32 %v6 to i64 20 %v8 = shl nuw i64 %v7, 32 21 %v9 = or i64 %v8, %v4 22 %v10 = tail call i64 @llvm.hexagon.M2.vdmacs.s0(i64 0, i64 %v9, i64 %v9) 23 %v11 = add nsw i32 %v2, 4 24 %v12 = icmp slt i32 %v11, %v0 25 br i1 %v12, label %b1, label %b2 26 27b2: ; preds = %b1, %b0 28 %v13 = phi i64 [ 0, %b0 ], [ %v10, %b1 ] 29 %v14 = tail call i64 @llvm.hexagon.S2.asr.r.vw(i64 %v13, i32 6) 30 store i64 %v14, i64* null, align 8 31 unreachable 32} 33 34; Function Attrs: nounwind readnone 35declare i64 @llvm.hexagon.M2.vdmacs.s0(i64, i64, i64) #1 36 37; Function Attrs: nounwind readnone 38declare i64 @llvm.hexagon.S2.asr.r.vw(i64, i32) #1 39 40attributes #0 = { nounwind } 41attributes #1 = { nounwind readnone } 42