; RUN: llc < %s -disable-fp-elim target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128" target triple = "i386-apple-macosx10.7" ; This test case has a landing pad with two predecessors, and a variable that ; is undef on the first edge while carrying the first function return value on ; the second edge. ; ; Live range splitting tries to isolate the block containing the first function ; call, and it is important that the last split point is after the function call ; so the return value can spill. ; ; @Exception = external unnamed_addr constant { i8*, i8* } declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind define void @f(i32* nocapture %arg, i32* nocapture %arg1, i32* nocapture %arg2, i32* nocapture %arg3, i32 %arg4, i32 %arg5) optsize ssp { bb: br i1 undef, label %bb6, label %bb7 bb6: ; preds = %bb %tmp = select i1 false, i32 0, i32 undef br label %bb7 bb7: ; preds = %bb6, %bb %tmp8 = phi i32 [ %tmp, %bb6 ], [ 0, %bb ] %tmp9 = shl i32 %tmp8, 2 %tmp10 = invoke noalias i8* @_Znam(i32 undef) optsize to label %bb11 unwind label %bb20 bb11: ; preds = %bb7 %tmp12 = ptrtoint i8* %tmp10 to i32 %tmp13 = bitcast i8* %tmp10 to i32* %tmp14 = shl i32 %tmp8, 2 %tmp15 = getelementptr i32* %tmp13, i32 undef %tmp16 = getelementptr i32* %tmp13, i32 undef %tmp17 = zext i32 %tmp9 to i64 %tmp18 = add i64 %tmp17, -1 %tmp19 = icmp ugt i64 %tmp18, 4294967295 br i1 %tmp19, label %bb29, label %bb31 bb20: ; preds = %bb43, %bb41, %bb29, %bb7 %tmp21 = phi i32 [ undef, %bb7 ], [ %tmp12, %bb43 ], [ %tmp12, %bb29 ], [ %tmp12, %bb41 ] %tmp22 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) catch i8* bitcast ({ i8*, i8* }* @Exception to i8*) br i1 undef, label %bb23, label %bb69 bb23: ; preds = %bb38, %bb20 %tmp24 = phi i32 [ %tmp12, %bb38 ], [ %tmp21, %bb20 ] %tmp25 = icmp eq i32 %tmp24, 0 br i1 %tmp25, label %bb28, label %bb26 bb26: ; preds = %bb23 %tmp27 = inttoptr i32 %tmp24 to i8* br label %bb28 bb28: ; preds = %bb26, %bb23 ret void bb29: ; preds = %bb11 invoke void @OnOverFlow() optsize to label %bb30 unwind label %bb20 bb30: ; preds = %bb29 unreachable bb31: ; preds = %bb11 %tmp32 = bitcast i32* %tmp15 to i8* %tmp33 = zext i32 %tmp8 to i64 %tmp34 = add i64 %tmp33, -1 %tmp35 = icmp ugt i64 %tmp34, 4294967295 %tmp36 = icmp sgt i32 %tmp8, 0 %tmp37 = add i32 %tmp9, -4 br label %bb38 bb38: ; preds = %bb67, %bb31 %tmp39 = phi i32 [ %tmp68, %bb67 ], [ undef, %bb31 ] %tmp40 = icmp sgt i32 %tmp39, undef br i1 %tmp40, label %bb41, label %bb23 bb41: ; preds = %bb38 invoke void @Pjii(i32* %tmp16, i32 0, i32 %tmp8) optsize to label %bb42 unwind label %bb20 bb42: ; preds = %bb41 tail call void @llvm.memset.p0i8.i32(i8* %tmp32, i8 0, i32 %tmp9, i32 1, i1 false) nounwind br i1 %tmp35, label %bb43, label %bb45 bb43: ; preds = %bb42 invoke void @OnOverFlow() optsize to label %bb44 unwind label %bb20 bb44: ; preds = %bb43 unreachable bb45: ; preds = %bb57, %bb42 %tmp46 = phi i32 [ %tmp58, %bb57 ], [ 255, %bb42 ] %tmp47 = icmp slt i32 undef, 0 br i1 %tmp47, label %bb48, label %bb59 bb48: ; preds = %bb45 tail call void @llvm.memset.p0i8.i32(i8* %tmp32, i8 0, i32 %tmp9, i32 1, i1 false) nounwind br i1 %tmp36, label %bb49, label %bb57 bb49: ; preds = %bb49, %bb48 %tmp50 = phi i32 [ %tmp55, %bb49 ], [ 0, %bb48 ] %tmp51 = add i32 %tmp50, undef %tmp52 = add i32 %tmp50, undef %tmp53 = getelementptr i32* %tmp13, i32 %tmp52 %tmp54 = load i32* %tmp53, align 4 %tmp55 = add i32 %tmp50, 1 %tmp56 = icmp eq i32 %tmp55, %tmp8 br i1 %tmp56, label %bb57, label %bb49 bb57: ; preds = %bb49, %bb48 %tmp58 = add i32 %tmp46, -1 br label %bb45 bb59: ; preds = %bb45 %tmp60 = ashr i32 %tmp46, 31 tail call void @llvm.memset.p0i8.i32(i8* null, i8 0, i32 %tmp37, i32 1, i1 false) nounwind br i1 %tmp36, label %bb61, label %bb67 bb61: ; preds = %bb61, %bb59 %tmp62 = phi i32 [ %tmp65, %bb61 ], [ 0, %bb59 ] %tmp63 = add i32 %tmp62, %tmp14 %tmp64 = getelementptr i32* %tmp13, i32 %tmp63 store i32 0, i32* %tmp64, align 4 %tmp65 = add i32 %tmp62, 1 %tmp66 = icmp eq i32 %tmp65, %tmp8 br i1 %tmp66, label %bb67, label %bb61 bb67: ; preds = %bb61, %bb59 %tmp68 = add i32 %tmp39, -1 br label %bb38 bb69: ; preds = %bb20 resume { i8*, i32 } %tmp22 } declare i32 @__gxx_personality_v0(...) declare noalias i8* @_Znam(i32) optsize declare void @Pjii(i32*, i32, i32) optsize declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone declare void @OnOverFlow() noreturn optsize ssp align 2